95 ZJ Two symptoms, what's the problem?
09-07-2004, 09:40 PM
#1
Guest
Posts: n/a
95 ZJ Two symptoms, what's the problem?
1995 ZJ with 4.0 and auto, about 120,000 miles, well maintained.
Driving from East Coast it stalled twice at idle. Driving into the
Rocky Mountains have little power above 8000 feet. No check engine
light, etc.
Any thoughts?
Driving from East Coast it stalled twice at idle. Driving into the
Rocky Mountains have little power above 8000 feet. No check engine
light, etc.
Any thoughts?
09-07-2004, 10:17 PM
#2
Guest
Posts: n/a
Re: 95 ZJ Two symptoms, what's the problem?
Howard did pass the time by typing:
> 1995 ZJ with 4.0 and auto, about 120,000 miles, well maintained.
> Driving from East Coast it stalled twice at idle. Driving into the
> Rocky Mountains have little power above 8000 feet. No check engine
> light, etc.
Just the basics.
- spark (plugs, wires, cap, rotor, and possibly coil or distributor)
- fuel (filter)
High altitude will rob power. And you will feel a loss at 8000 ft
but it shouldn't be too weak. When you go to altitude your better off
using a lower octane fuel because the higher octane won't ignite as
easily with the lower compression. Combine that with a weak spark
and your going to go nowhere fast, except downhill in neutral that is. :)
Cleaned the throttle body lately?
http://members.***.net/wilsond/tb/tb.html
Not sure if the 95 can pull codes but cycle the key
on-off-on-off-on (on, not start)
then count the CHECK ENGINE light blinks, they come in pairs.
i.e. BLINK ... BLINK BLINK is 12
http://members.***.net/wilsond/engine_codes.html
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!
> 1995 ZJ with 4.0 and auto, about 120,000 miles, well maintained.
> Driving from East Coast it stalled twice at idle. Driving into the
> Rocky Mountains have little power above 8000 feet. No check engine
> light, etc.
Just the basics.
- spark (plugs, wires, cap, rotor, and possibly coil or distributor)
- fuel (filter)
High altitude will rob power. And you will feel a loss at 8000 ft
but it shouldn't be too weak. When you go to altitude your better off
using a lower octane fuel because the higher octane won't ignite as
easily with the lower compression. Combine that with a weak spark
and your going to go nowhere fast, except downhill in neutral that is. :)
Cleaned the throttle body lately?
http://members.***.net/wilsond/tb/tb.html
Not sure if the 95 can pull codes but cycle the key
on-off-on-off-on (on, not start)
then count the CHECK ENGINE light blinks, they come in pairs.
i.e. BLINK ... BLINK BLINK is 12
http://members.***.net/wilsond/engine_codes.html
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!
09-07-2004, 10:17 PM
#3
Guest
Posts: n/a
Re: 95 ZJ Two symptoms, what's the problem?
Howard did pass the time by typing:
> 1995 ZJ with 4.0 and auto, about 120,000 miles, well maintained.
> Driving from East Coast it stalled twice at idle. Driving into the
> Rocky Mountains have little power above 8000 feet. No check engine
> light, etc.
Just the basics.
- spark (plugs, wires, cap, rotor, and possibly coil or distributor)
- fuel (filter)
High altitude will rob power. And you will feel a loss at 8000 ft
but it shouldn't be too weak. When you go to altitude your better off
using a lower octane fuel because the higher octane won't ignite as
easily with the lower compression. Combine that with a weak spark
and your going to go nowhere fast, except downhill in neutral that is. :)
Cleaned the throttle body lately?
http://members.***.net/wilsond/tb/tb.html
Not sure if the 95 can pull codes but cycle the key
on-off-on-off-on (on, not start)
then count the CHECK ENGINE light blinks, they come in pairs.
i.e. BLINK ... BLINK BLINK is 12
http://members.***.net/wilsond/engine_codes.html
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!
> 1995 ZJ with 4.0 and auto, about 120,000 miles, well maintained.
> Driving from East Coast it stalled twice at idle. Driving into the
> Rocky Mountains have little power above 8000 feet. No check engine
> light, etc.
Just the basics.
- spark (plugs, wires, cap, rotor, and possibly coil or distributor)
- fuel (filter)
High altitude will rob power. And you will feel a loss at 8000 ft
but it shouldn't be too weak. When you go to altitude your better off
using a lower octane fuel because the higher octane won't ignite as
easily with the lower compression. Combine that with a weak spark
and your going to go nowhere fast, except downhill in neutral that is. :)
Cleaned the throttle body lately?
http://members.***.net/wilsond/tb/tb.html
Not sure if the 95 can pull codes but cycle the key
on-off-on-off-on (on, not start)
then count the CHECK ENGINE light blinks, they come in pairs.
i.e. BLINK ... BLINK BLINK is 12
http://members.***.net/wilsond/engine_codes.html
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!
09-07-2004, 10:17 PM
#4
Guest
Posts: n/a
Re: 95 ZJ Two symptoms, what's the problem?
Howard did pass the time by typing:
> 1995 ZJ with 4.0 and auto, about 120,000 miles, well maintained.
> Driving from East Coast it stalled twice at idle. Driving into the
> Rocky Mountains have little power above 8000 feet. No check engine
> light, etc.
Just the basics.
- spark (plugs, wires, cap, rotor, and possibly coil or distributor)
- fuel (filter)
High altitude will rob power. And you will feel a loss at 8000 ft
but it shouldn't be too weak. When you go to altitude your better off
using a lower octane fuel because the higher octane won't ignite as
easily with the lower compression. Combine that with a weak spark
and your going to go nowhere fast, except downhill in neutral that is. :)
Cleaned the throttle body lately?
http://members.***.net/wilsond/tb/tb.html
Not sure if the 95 can pull codes but cycle the key
on-off-on-off-on (on, not start)
then count the CHECK ENGINE light blinks, they come in pairs.
i.e. BLINK ... BLINK BLINK is 12
http://members.***.net/wilsond/engine_codes.html
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!
> 1995 ZJ with 4.0 and auto, about 120,000 miles, well maintained.
> Driving from East Coast it stalled twice at idle. Driving into the
> Rocky Mountains have little power above 8000 feet. No check engine
> light, etc.
Just the basics.
- spark (plugs, wires, cap, rotor, and possibly coil or distributor)
- fuel (filter)
High altitude will rob power. And you will feel a loss at 8000 ft
but it shouldn't be too weak. When you go to altitude your better off
using a lower octane fuel because the higher octane won't ignite as
easily with the lower compression. Combine that with a weak spark
and your going to go nowhere fast, except downhill in neutral that is. :)
Cleaned the throttle body lately?
http://members.***.net/wilsond/tb/tb.html
Not sure if the 95 can pull codes but cycle the key
on-off-on-off-on (on, not start)
then count the CHECK ENGINE light blinks, they come in pairs.
i.e. BLINK ... BLINK BLINK is 12
http://members.***.net/wilsond/engine_codes.html
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!
09-07-2004, 11:14 PM
#5
Guest
Posts: n/a
Re: 95 ZJ Two symptoms, what's the problem?
On Wed, 8 Sep 2004 01:40:19 UTC nospamets@quadnet.net (Howard) wrote:
> 1995 ZJ with 4.0 and auto, about 120,000 miles, well maintained.
> Driving from East Coast it stalled twice at idle. Driving into the
> Rocky Mountains have little power above 8000 feet. No check engine
> light, etc.
>
> Any thoughts?
Bad gas, dirty air filter, go back to sea level.
Seriously, at 8000 ft you will have lost over a third of your
theoretical power (pushing 50% trying to top Vail Pass). I start at
6000+ and still notice the drop in power as I cross the Continental
Divide - but having flown light aircraft in the mountains I'm a lot
more aware of the effect than most people. Now consider the grades
you are encountering and you can really feel it. Heck, I notice the
difference when I drive down to the Texas coast and back up. After
Raton Pass I fell like I should put my foot out and push going up
hill.
If you lived up here and replaced the CPS, the dealer would give you
one that advances the base timing by several degrees. Given the stall
at idle, it could also be either a bad TPS or (more commonly) a dirty
connector on the TPS that was giving a bad reading at idle and/or WOT.
Just to give you a better feel for the effect of altitude: light a/c,
normally aspirated - even with fuel injection - pretty much reach
their service ceiling at about 14000 or so.
--
Will Honea
> 1995 ZJ with 4.0 and auto, about 120,000 miles, well maintained.
> Driving from East Coast it stalled twice at idle. Driving into the
> Rocky Mountains have little power above 8000 feet. No check engine
> light, etc.
>
> Any thoughts?
Bad gas, dirty air filter, go back to sea level.
Seriously, at 8000 ft you will have lost over a third of your
theoretical power (pushing 50% trying to top Vail Pass). I start at
6000+ and still notice the drop in power as I cross the Continental
Divide - but having flown light aircraft in the mountains I'm a lot
more aware of the effect than most people. Now consider the grades
you are encountering and you can really feel it. Heck, I notice the
difference when I drive down to the Texas coast and back up. After
Raton Pass I fell like I should put my foot out and push going up
hill.
If you lived up here and replaced the CPS, the dealer would give you
one that advances the base timing by several degrees. Given the stall
at idle, it could also be either a bad TPS or (more commonly) a dirty
connector on the TPS that was giving a bad reading at idle and/or WOT.
Just to give you a better feel for the effect of altitude: light a/c,
normally aspirated - even with fuel injection - pretty much reach
their service ceiling at about 14000 or so.
--
Will Honea
09-07-2004, 11:14 PM
#6
Guest
Posts: n/a
Re: 95 ZJ Two symptoms, what's the problem?
On Wed, 8 Sep 2004 01:40:19 UTC nospamets@quadnet.net (Howard) wrote:
> 1995 ZJ with 4.0 and auto, about 120,000 miles, well maintained.
> Driving from East Coast it stalled twice at idle. Driving into the
> Rocky Mountains have little power above 8000 feet. No check engine
> light, etc.
>
> Any thoughts?
Bad gas, dirty air filter, go back to sea level.
Seriously, at 8000 ft you will have lost over a third of your
theoretical power (pushing 50% trying to top Vail Pass). I start at
6000+ and still notice the drop in power as I cross the Continental
Divide - but having flown light aircraft in the mountains I'm a lot
more aware of the effect than most people. Now consider the grades
you are encountering and you can really feel it. Heck, I notice the
difference when I drive down to the Texas coast and back up. After
Raton Pass I fell like I should put my foot out and push going up
hill.
If you lived up here and replaced the CPS, the dealer would give you
one that advances the base timing by several degrees. Given the stall
at idle, it could also be either a bad TPS or (more commonly) a dirty
connector on the TPS that was giving a bad reading at idle and/or WOT.
Just to give you a better feel for the effect of altitude: light a/c,
normally aspirated - even with fuel injection - pretty much reach
their service ceiling at about 14000 or so.
--
Will Honea
> 1995 ZJ with 4.0 and auto, about 120,000 miles, well maintained.
> Driving from East Coast it stalled twice at idle. Driving into the
> Rocky Mountains have little power above 8000 feet. No check engine
> light, etc.
>
> Any thoughts?
Bad gas, dirty air filter, go back to sea level.
Seriously, at 8000 ft you will have lost over a third of your
theoretical power (pushing 50% trying to top Vail Pass). I start at
6000+ and still notice the drop in power as I cross the Continental
Divide - but having flown light aircraft in the mountains I'm a lot
more aware of the effect than most people. Now consider the grades
you are encountering and you can really feel it. Heck, I notice the
difference when I drive down to the Texas coast and back up. After
Raton Pass I fell like I should put my foot out and push going up
hill.
If you lived up here and replaced the CPS, the dealer would give you
one that advances the base timing by several degrees. Given the stall
at idle, it could also be either a bad TPS or (more commonly) a dirty
connector on the TPS that was giving a bad reading at idle and/or WOT.
Just to give you a better feel for the effect of altitude: light a/c,
normally aspirated - even with fuel injection - pretty much reach
their service ceiling at about 14000 or so.
--
Will Honea
09-07-2004, 11:14 PM
#7
Guest
Posts: n/a
Re: 95 ZJ Two symptoms, what's the problem?
On Wed, 8 Sep 2004 01:40:19 UTC nospamets@quadnet.net (Howard) wrote:
> 1995 ZJ with 4.0 and auto, about 120,000 miles, well maintained.
> Driving from East Coast it stalled twice at idle. Driving into the
> Rocky Mountains have little power above 8000 feet. No check engine
> light, etc.
>
> Any thoughts?
Bad gas, dirty air filter, go back to sea level.
Seriously, at 8000 ft you will have lost over a third of your
theoretical power (pushing 50% trying to top Vail Pass). I start at
6000+ and still notice the drop in power as I cross the Continental
Divide - but having flown light aircraft in the mountains I'm a lot
more aware of the effect than most people. Now consider the grades
you are encountering and you can really feel it. Heck, I notice the
difference when I drive down to the Texas coast and back up. After
Raton Pass I fell like I should put my foot out and push going up
hill.
If you lived up here and replaced the CPS, the dealer would give you
one that advances the base timing by several degrees. Given the stall
at idle, it could also be either a bad TPS or (more commonly) a dirty
connector on the TPS that was giving a bad reading at idle and/or WOT.
Just to give you a better feel for the effect of altitude: light a/c,
normally aspirated - even with fuel injection - pretty much reach
their service ceiling at about 14000 or so.
--
Will Honea
> 1995 ZJ with 4.0 and auto, about 120,000 miles, well maintained.
> Driving from East Coast it stalled twice at idle. Driving into the
> Rocky Mountains have little power above 8000 feet. No check engine
> light, etc.
>
> Any thoughts?
Bad gas, dirty air filter, go back to sea level.
Seriously, at 8000 ft you will have lost over a third of your
theoretical power (pushing 50% trying to top Vail Pass). I start at
6000+ and still notice the drop in power as I cross the Continental
Divide - but having flown light aircraft in the mountains I'm a lot
more aware of the effect than most people. Now consider the grades
you are encountering and you can really feel it. Heck, I notice the
difference when I drive down to the Texas coast and back up. After
Raton Pass I fell like I should put my foot out and push going up
hill.
If you lived up here and replaced the CPS, the dealer would give you
one that advances the base timing by several degrees. Given the stall
at idle, it could also be either a bad TPS or (more commonly) a dirty
connector on the TPS that was giving a bad reading at idle and/or WOT.
Just to give you a better feel for the effect of altitude: light a/c,
normally aspirated - even with fuel injection - pretty much reach
their service ceiling at about 14000 or so.
--
Will Honea
09-07-2004, 11:33 PM
#8
Guest
Posts: n/a
Re: 95 ZJ Two symptoms, what's the problem?
Hi Will,
Back when I was serious drag racer in the sixties we bought engines
cast for Colorado to gain a compression ratio running stock classes.
This Cherokee build order eludes to the difference still in cars:
"Emissions - High Altitude Tracking".
Seats - Cloth Low-Back Bucket
Luxury Group
Trailer Tow Group IV
Monotone Paint
4.7L Eng (EVA)/5Spd A/T 5-45Rfe(DGQ)
Alternator - 136 Amp
Battery - 625 Amp Maintenance Free
Brakes - Anti-Lock 4-Wheel Disc
Seats - Low Back Bucket
Door Trim Panel - Highline
Seat - Rear 60/40 Folding
Air Bags - Side, Supplemental
Child Seat Anchor System-LATCH Ready
Air Bags-Front,Next Gen,Multistage**
Air Bag-Side Window Curtain,Frt & Rr
Carpet - Floor
Carpet - Cargo Compartment
Cargo Tie Down Loops
Floor Mats - Front & Rear
Cargo Trim Panel w/Storage Net
Scuff Pads - Door Sill
Cover - Cargo Compartment
Assist Handles - Passenger
Console - Mini Overhead
Console - Full Length Floor
Transmission - All 5-Speed Automatic
Transmission-5-Spd Automatic 5-45RFE
Torque Converter - Lock-Up
Selec-Trac Full Time 4WD System
Axle - Front, Dana 30/186MM
Axle Ratio - 3.73
Axle - Rear, Dana 44/226MM
Engine- 4.7L V8 MPI
Windshield Glass - Tinted
Glass - Front Door Tinted
Glass - Deep Tint Sunscreen
Glass - Flipper Liftgate
Defroster - Rear Window
Sun Visors - Illum Vanity Mirrors
Mirror - Rear View, Auto Dim
Mirrors - Power, Fold-Away
Keyless Entry - Remote
Sentry Key Theft Deterrent System
Air Conditioning
Insulation - Hood
Insulation Group - Deluxe
Route 24 - UP, Rolla, CO
Instrument Cluster w/Tach
Speedometer - 120 MPH Primary
Windshield Wipers - Var Intermittent
Wiper/Washer - Rear Window
Horns - Electric, Dual Note
Glove Box - Locking
Power Outlet - Auxiliary 12V
Power Accessory Delay
Locks - Power
Windows - Power, Driver One-Touch
Seats -Power Front, Driver/Passenger
STRIPE/BADGE/MOLDING/COLOR
STRIPE/BADGE/MOLDING/COLOR
Illuminated Entry
Warning Chime
Vehicle Information Center
Lamps - Courtesy
Lamp - Glove Box
Lamp - Ash Tray
Lamps - Rear Courtesy/Reading
Lamp - Cargo Compartment
Traveler/Mini Trip Computer
Headlamps - Halogen
Headlamps - Automatic
Lamp - Center Hi-Mount Stop
Security Alarm
Bracket - Front License Plate
Grille - Bright
Windshield Moldings - Black
Badge - Grand Cherokee, Bright
Badge - Jeep, Bright
Badge - V-8, Liftgate, Bright
Roof Rack
Badge - 4 X 4
Emissions - U.S. 50 State
Emissions - High Altitude Tracking
Low Emission Vehicle (LEV)
Fuel Tank - 20.5 Gallon
Cooler - Power Steering
Speed Control
Engine Cooling - Hydraulic
Patriot Blue Pearl Coat
Patriot Blue Pearl Coat
All Radio Equipped Vehicles
Radio-AM/FM Cass/CD/Equal/Chgr Ctrl
Speaker System - Infinity
Antenna - Fixed
Audio Ctrls-Steering Wheel Mounted
Steering - Power Rack and Pinion
Steering Wheel - Leather Wrapped
Suspension - Normal Duty
Steering Column - Tilt
Spare Tire - Inside Mount
Spare Tire- Full Size, Matching Whl
Tires - P245/70R16 OWL All Terrain
Goodyear Brand Tires
Wheels - 16 x 7.0 Lux Alum, Silver
Wheels - All Aluminum
Pedals - Power Adjustable
Hitch - Class IV Receiver
Wiring Harness - 7 Pin
Adaptor - 7 to 4 Pin, Wiring
Garage Door Opener - Universal
Protective Coating and Remover
Build To U S Market Specifications
Manuf Statement of Origin
7 Additional Gallons Of Gas
Spring - Left Front
Spring - Left Rear
Spring - Right Front
Spring - Right Rear
GVW/Payload Rating
Four Wheel Drive (4WD)/(4X4)
Left Hand Drive (LHD)
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Will Honea wrote:
>
> Bad gas, dirty air filter, go back to sea level.
>
> Seriously, at 8000 ft you will have lost over a third of your
> theoretical power (pushing 50% trying to top Vail Pass). I start at
> 6000+ and still notice the drop in power as I cross the Continental
> Divide - but having flown light aircraft in the mountains I'm a lot
> more aware of the effect than most people. Now consider the grades
> you are encountering and you can really feel it. Heck, I notice the
> difference when I drive down to the Texas coast and back up. After
> Raton Pass I fell like I should put my foot out and push going up
> hill.
>
> If you lived up here and replaced the CPS, the dealer would give you
> one that advances the base timing by several degrees. Given the stall
> at idle, it could also be either a bad TPS or (more commonly) a dirty
> connector on the TPS that was giving a bad reading at idle and/or WOT.
>
> Just to give you a better feel for the effect of altitude: light a/c,
> normally aspirated - even with fuel injection - pretty much reach
> their service ceiling at about 14000 or so.
>
> --
> Will Honea
Back when I was serious drag racer in the sixties we bought engines
cast for Colorado to gain a compression ratio running stock classes.
This Cherokee build order eludes to the difference still in cars:
"Emissions - High Altitude Tracking".
Seats - Cloth Low-Back Bucket
Luxury Group
Trailer Tow Group IV
Monotone Paint
4.7L Eng (EVA)/5Spd A/T 5-45Rfe(DGQ)
Alternator - 136 Amp
Battery - 625 Amp Maintenance Free
Brakes - Anti-Lock 4-Wheel Disc
Seats - Low Back Bucket
Door Trim Panel - Highline
Seat - Rear 60/40 Folding
Air Bags - Side, Supplemental
Child Seat Anchor System-LATCH Ready
Air Bags-Front,Next Gen,Multistage**
Air Bag-Side Window Curtain,Frt & Rr
Carpet - Floor
Carpet - Cargo Compartment
Cargo Tie Down Loops
Floor Mats - Front & Rear
Cargo Trim Panel w/Storage Net
Scuff Pads - Door Sill
Cover - Cargo Compartment
Assist Handles - Passenger
Console - Mini Overhead
Console - Full Length Floor
Transmission - All 5-Speed Automatic
Transmission-5-Spd Automatic 5-45RFE
Torque Converter - Lock-Up
Selec-Trac Full Time 4WD System
Axle - Front, Dana 30/186MM
Axle Ratio - 3.73
Axle - Rear, Dana 44/226MM
Engine- 4.7L V8 MPI
Windshield Glass - Tinted
Glass - Front Door Tinted
Glass - Deep Tint Sunscreen
Glass - Flipper Liftgate
Defroster - Rear Window
Sun Visors - Illum Vanity Mirrors
Mirror - Rear View, Auto Dim
Mirrors - Power, Fold-Away
Keyless Entry - Remote
Sentry Key Theft Deterrent System
Air Conditioning
Insulation - Hood
Insulation Group - Deluxe
Route 24 - UP, Rolla, CO
Instrument Cluster w/Tach
Speedometer - 120 MPH Primary
Windshield Wipers - Var Intermittent
Wiper/Washer - Rear Window
Horns - Electric, Dual Note
Glove Box - Locking
Power Outlet - Auxiliary 12V
Power Accessory Delay
Locks - Power
Windows - Power, Driver One-Touch
Seats -Power Front, Driver/Passenger
STRIPE/BADGE/MOLDING/COLOR
STRIPE/BADGE/MOLDING/COLOR
Illuminated Entry
Warning Chime
Vehicle Information Center
Lamps - Courtesy
Lamp - Glove Box
Lamp - Ash Tray
Lamps - Rear Courtesy/Reading
Lamp - Cargo Compartment
Traveler/Mini Trip Computer
Headlamps - Halogen
Headlamps - Automatic
Lamp - Center Hi-Mount Stop
Security Alarm
Bracket - Front License Plate
Grille - Bright
Windshield Moldings - Black
Badge - Grand Cherokee, Bright
Badge - Jeep, Bright
Badge - V-8, Liftgate, Bright
Roof Rack
Badge - 4 X 4
Emissions - U.S. 50 State
Emissions - High Altitude Tracking
Low Emission Vehicle (LEV)
Fuel Tank - 20.5 Gallon
Cooler - Power Steering
Speed Control
Engine Cooling - Hydraulic
Patriot Blue Pearl Coat
Patriot Blue Pearl Coat
All Radio Equipped Vehicles
Radio-AM/FM Cass/CD/Equal/Chgr Ctrl
Speaker System - Infinity
Antenna - Fixed
Audio Ctrls-Steering Wheel Mounted
Steering - Power Rack and Pinion
Steering Wheel - Leather Wrapped
Suspension - Normal Duty
Steering Column - Tilt
Spare Tire - Inside Mount
Spare Tire- Full Size, Matching Whl
Tires - P245/70R16 OWL All Terrain
Goodyear Brand Tires
Wheels - 16 x 7.0 Lux Alum, Silver
Wheels - All Aluminum
Pedals - Power Adjustable
Hitch - Class IV Receiver
Wiring Harness - 7 Pin
Adaptor - 7 to 4 Pin, Wiring
Garage Door Opener - Universal
Protective Coating and Remover
Build To U S Market Specifications
Manuf Statement of Origin
7 Additional Gallons Of Gas
Spring - Left Front
Spring - Left Rear
Spring - Right Front
Spring - Right Rear
GVW/Payload Rating
Four Wheel Drive (4WD)/(4X4)
Left Hand Drive (LHD)
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Will Honea wrote:
>
> Bad gas, dirty air filter, go back to sea level.
>
> Seriously, at 8000 ft you will have lost over a third of your
> theoretical power (pushing 50% trying to top Vail Pass). I start at
> 6000+ and still notice the drop in power as I cross the Continental
> Divide - but having flown light aircraft in the mountains I'm a lot
> more aware of the effect than most people. Now consider the grades
> you are encountering and you can really feel it. Heck, I notice the
> difference when I drive down to the Texas coast and back up. After
> Raton Pass I fell like I should put my foot out and push going up
> hill.
>
> If you lived up here and replaced the CPS, the dealer would give you
> one that advances the base timing by several degrees. Given the stall
> at idle, it could also be either a bad TPS or (more commonly) a dirty
> connector on the TPS that was giving a bad reading at idle and/or WOT.
>
> Just to give you a better feel for the effect of altitude: light a/c,
> normally aspirated - even with fuel injection - pretty much reach
> their service ceiling at about 14000 or so.
>
> --
> Will Honea
09-07-2004, 11:33 PM
#9
Guest
Posts: n/a
Re: 95 ZJ Two symptoms, what's the problem?
Hi Will,
Back when I was serious drag racer in the sixties we bought engines
cast for Colorado to gain a compression ratio running stock classes.
This Cherokee build order eludes to the difference still in cars:
"Emissions - High Altitude Tracking".
Seats - Cloth Low-Back Bucket
Luxury Group
Trailer Tow Group IV
Monotone Paint
4.7L Eng (EVA)/5Spd A/T 5-45Rfe(DGQ)
Alternator - 136 Amp
Battery - 625 Amp Maintenance Free
Brakes - Anti-Lock 4-Wheel Disc
Seats - Low Back Bucket
Door Trim Panel - Highline
Seat - Rear 60/40 Folding
Air Bags - Side, Supplemental
Child Seat Anchor System-LATCH Ready
Air Bags-Front,Next Gen,Multistage**
Air Bag-Side Window Curtain,Frt & Rr
Carpet - Floor
Carpet - Cargo Compartment
Cargo Tie Down Loops
Floor Mats - Front & Rear
Cargo Trim Panel w/Storage Net
Scuff Pads - Door Sill
Cover - Cargo Compartment
Assist Handles - Passenger
Console - Mini Overhead
Console - Full Length Floor
Transmission - All 5-Speed Automatic
Transmission-5-Spd Automatic 5-45RFE
Torque Converter - Lock-Up
Selec-Trac Full Time 4WD System
Axle - Front, Dana 30/186MM
Axle Ratio - 3.73
Axle - Rear, Dana 44/226MM
Engine- 4.7L V8 MPI
Windshield Glass - Tinted
Glass - Front Door Tinted
Glass - Deep Tint Sunscreen
Glass - Flipper Liftgate
Defroster - Rear Window
Sun Visors - Illum Vanity Mirrors
Mirror - Rear View, Auto Dim
Mirrors - Power, Fold-Away
Keyless Entry - Remote
Sentry Key Theft Deterrent System
Air Conditioning
Insulation - Hood
Insulation Group - Deluxe
Route 24 - UP, Rolla, CO
Instrument Cluster w/Tach
Speedometer - 120 MPH Primary
Windshield Wipers - Var Intermittent
Wiper/Washer - Rear Window
Horns - Electric, Dual Note
Glove Box - Locking
Power Outlet - Auxiliary 12V
Power Accessory Delay
Locks - Power
Windows - Power, Driver One-Touch
Seats -Power Front, Driver/Passenger
STRIPE/BADGE/MOLDING/COLOR
STRIPE/BADGE/MOLDING/COLOR
Illuminated Entry
Warning Chime
Vehicle Information Center
Lamps - Courtesy
Lamp - Glove Box
Lamp - Ash Tray
Lamps - Rear Courtesy/Reading
Lamp - Cargo Compartment
Traveler/Mini Trip Computer
Headlamps - Halogen
Headlamps - Automatic
Lamp - Center Hi-Mount Stop
Security Alarm
Bracket - Front License Plate
Grille - Bright
Windshield Moldings - Black
Badge - Grand Cherokee, Bright
Badge - Jeep, Bright
Badge - V-8, Liftgate, Bright
Roof Rack
Badge - 4 X 4
Emissions - U.S. 50 State
Emissions - High Altitude Tracking
Low Emission Vehicle (LEV)
Fuel Tank - 20.5 Gallon
Cooler - Power Steering
Speed Control
Engine Cooling - Hydraulic
Patriot Blue Pearl Coat
Patriot Blue Pearl Coat
All Radio Equipped Vehicles
Radio-AM/FM Cass/CD/Equal/Chgr Ctrl
Speaker System - Infinity
Antenna - Fixed
Audio Ctrls-Steering Wheel Mounted
Steering - Power Rack and Pinion
Steering Wheel - Leather Wrapped
Suspension - Normal Duty
Steering Column - Tilt
Spare Tire - Inside Mount
Spare Tire- Full Size, Matching Whl
Tires - P245/70R16 OWL All Terrain
Goodyear Brand Tires
Wheels - 16 x 7.0 Lux Alum, Silver
Wheels - All Aluminum
Pedals - Power Adjustable
Hitch - Class IV Receiver
Wiring Harness - 7 Pin
Adaptor - 7 to 4 Pin, Wiring
Garage Door Opener - Universal
Protective Coating and Remover
Build To U S Market Specifications
Manuf Statement of Origin
7 Additional Gallons Of Gas
Spring - Left Front
Spring - Left Rear
Spring - Right Front
Spring - Right Rear
GVW/Payload Rating
Four Wheel Drive (4WD)/(4X4)
Left Hand Drive (LHD)
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Will Honea wrote:
>
> Bad gas, dirty air filter, go back to sea level.
>
> Seriously, at 8000 ft you will have lost over a third of your
> theoretical power (pushing 50% trying to top Vail Pass). I start at
> 6000+ and still notice the drop in power as I cross the Continental
> Divide - but having flown light aircraft in the mountains I'm a lot
> more aware of the effect than most people. Now consider the grades
> you are encountering and you can really feel it. Heck, I notice the
> difference when I drive down to the Texas coast and back up. After
> Raton Pass I fell like I should put my foot out and push going up
> hill.
>
> If you lived up here and replaced the CPS, the dealer would give you
> one that advances the base timing by several degrees. Given the stall
> at idle, it could also be either a bad TPS or (more commonly) a dirty
> connector on the TPS that was giving a bad reading at idle and/or WOT.
>
> Just to give you a better feel for the effect of altitude: light a/c,
> normally aspirated - even with fuel injection - pretty much reach
> their service ceiling at about 14000 or so.
>
> --
> Will Honea
Back when I was serious drag racer in the sixties we bought engines
cast for Colorado to gain a compression ratio running stock classes.
This Cherokee build order eludes to the difference still in cars:
"Emissions - High Altitude Tracking".
Seats - Cloth Low-Back Bucket
Luxury Group
Trailer Tow Group IV
Monotone Paint
4.7L Eng (EVA)/5Spd A/T 5-45Rfe(DGQ)
Alternator - 136 Amp
Battery - 625 Amp Maintenance Free
Brakes - Anti-Lock 4-Wheel Disc
Seats - Low Back Bucket
Door Trim Panel - Highline
Seat - Rear 60/40 Folding
Air Bags - Side, Supplemental
Child Seat Anchor System-LATCH Ready
Air Bags-Front,Next Gen,Multistage**
Air Bag-Side Window Curtain,Frt & Rr
Carpet - Floor
Carpet - Cargo Compartment
Cargo Tie Down Loops
Floor Mats - Front & Rear
Cargo Trim Panel w/Storage Net
Scuff Pads - Door Sill
Cover - Cargo Compartment
Assist Handles - Passenger
Console - Mini Overhead
Console - Full Length Floor
Transmission - All 5-Speed Automatic
Transmission-5-Spd Automatic 5-45RFE
Torque Converter - Lock-Up
Selec-Trac Full Time 4WD System
Axle - Front, Dana 30/186MM
Axle Ratio - 3.73
Axle - Rear, Dana 44/226MM
Engine- 4.7L V8 MPI
Windshield Glass - Tinted
Glass - Front Door Tinted
Glass - Deep Tint Sunscreen
Glass - Flipper Liftgate
Defroster - Rear Window
Sun Visors - Illum Vanity Mirrors
Mirror - Rear View, Auto Dim
Mirrors - Power, Fold-Away
Keyless Entry - Remote
Sentry Key Theft Deterrent System
Air Conditioning
Insulation - Hood
Insulation Group - Deluxe
Route 24 - UP, Rolla, CO
Instrument Cluster w/Tach
Speedometer - 120 MPH Primary
Windshield Wipers - Var Intermittent
Wiper/Washer - Rear Window
Horns - Electric, Dual Note
Glove Box - Locking
Power Outlet - Auxiliary 12V
Power Accessory Delay
Locks - Power
Windows - Power, Driver One-Touch
Seats -Power Front, Driver/Passenger
STRIPE/BADGE/MOLDING/COLOR
STRIPE/BADGE/MOLDING/COLOR
Illuminated Entry
Warning Chime
Vehicle Information Center
Lamps - Courtesy
Lamp - Glove Box
Lamp - Ash Tray
Lamps - Rear Courtesy/Reading
Lamp - Cargo Compartment
Traveler/Mini Trip Computer
Headlamps - Halogen
Headlamps - Automatic
Lamp - Center Hi-Mount Stop
Security Alarm
Bracket - Front License Plate
Grille - Bright
Windshield Moldings - Black
Badge - Grand Cherokee, Bright
Badge - Jeep, Bright
Badge - V-8, Liftgate, Bright
Roof Rack
Badge - 4 X 4
Emissions - U.S. 50 State
Emissions - High Altitude Tracking
Low Emission Vehicle (LEV)
Fuel Tank - 20.5 Gallon
Cooler - Power Steering
Speed Control
Engine Cooling - Hydraulic
Patriot Blue Pearl Coat
Patriot Blue Pearl Coat
All Radio Equipped Vehicles
Radio-AM/FM Cass/CD/Equal/Chgr Ctrl
Speaker System - Infinity
Antenna - Fixed
Audio Ctrls-Steering Wheel Mounted
Steering - Power Rack and Pinion
Steering Wheel - Leather Wrapped
Suspension - Normal Duty
Steering Column - Tilt
Spare Tire - Inside Mount
Spare Tire- Full Size, Matching Whl
Tires - P245/70R16 OWL All Terrain
Goodyear Brand Tires
Wheels - 16 x 7.0 Lux Alum, Silver
Wheels - All Aluminum
Pedals - Power Adjustable
Hitch - Class IV Receiver
Wiring Harness - 7 Pin
Adaptor - 7 to 4 Pin, Wiring
Garage Door Opener - Universal
Protective Coating and Remover
Build To U S Market Specifications
Manuf Statement of Origin
7 Additional Gallons Of Gas
Spring - Left Front
Spring - Left Rear
Spring - Right Front
Spring - Right Rear
GVW/Payload Rating
Four Wheel Drive (4WD)/(4X4)
Left Hand Drive (LHD)
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Will Honea wrote:
>
> Bad gas, dirty air filter, go back to sea level.
>
> Seriously, at 8000 ft you will have lost over a third of your
> theoretical power (pushing 50% trying to top Vail Pass). I start at
> 6000+ and still notice the drop in power as I cross the Continental
> Divide - but having flown light aircraft in the mountains I'm a lot
> more aware of the effect than most people. Now consider the grades
> you are encountering and you can really feel it. Heck, I notice the
> difference when I drive down to the Texas coast and back up. After
> Raton Pass I fell like I should put my foot out and push going up
> hill.
>
> If you lived up here and replaced the CPS, the dealer would give you
> one that advances the base timing by several degrees. Given the stall
> at idle, it could also be either a bad TPS or (more commonly) a dirty
> connector on the TPS that was giving a bad reading at idle and/or WOT.
>
> Just to give you a better feel for the effect of altitude: light a/c,
> normally aspirated - even with fuel injection - pretty much reach
> their service ceiling at about 14000 or so.
>
> --
> Will Honea
09-07-2004, 11:33 PM
#10
Guest
Posts: n/a
Re: 95 ZJ Two symptoms, what's the problem?
Hi Will,
Back when I was serious drag racer in the sixties we bought engines
cast for Colorado to gain a compression ratio running stock classes.
This Cherokee build order eludes to the difference still in cars:
"Emissions - High Altitude Tracking".
Seats - Cloth Low-Back Bucket
Luxury Group
Trailer Tow Group IV
Monotone Paint
4.7L Eng (EVA)/5Spd A/T 5-45Rfe(DGQ)
Alternator - 136 Amp
Battery - 625 Amp Maintenance Free
Brakes - Anti-Lock 4-Wheel Disc
Seats - Low Back Bucket
Door Trim Panel - Highline
Seat - Rear 60/40 Folding
Air Bags - Side, Supplemental
Child Seat Anchor System-LATCH Ready
Air Bags-Front,Next Gen,Multistage**
Air Bag-Side Window Curtain,Frt & Rr
Carpet - Floor
Carpet - Cargo Compartment
Cargo Tie Down Loops
Floor Mats - Front & Rear
Cargo Trim Panel w/Storage Net
Scuff Pads - Door Sill
Cover - Cargo Compartment
Assist Handles - Passenger
Console - Mini Overhead
Console - Full Length Floor
Transmission - All 5-Speed Automatic
Transmission-5-Spd Automatic 5-45RFE
Torque Converter - Lock-Up
Selec-Trac Full Time 4WD System
Axle - Front, Dana 30/186MM
Axle Ratio - 3.73
Axle - Rear, Dana 44/226MM
Engine- 4.7L V8 MPI
Windshield Glass - Tinted
Glass - Front Door Tinted
Glass - Deep Tint Sunscreen
Glass - Flipper Liftgate
Defroster - Rear Window
Sun Visors - Illum Vanity Mirrors
Mirror - Rear View, Auto Dim
Mirrors - Power, Fold-Away
Keyless Entry - Remote
Sentry Key Theft Deterrent System
Air Conditioning
Insulation - Hood
Insulation Group - Deluxe
Route 24 - UP, Rolla, CO
Instrument Cluster w/Tach
Speedometer - 120 MPH Primary
Windshield Wipers - Var Intermittent
Wiper/Washer - Rear Window
Horns - Electric, Dual Note
Glove Box - Locking
Power Outlet - Auxiliary 12V
Power Accessory Delay
Locks - Power
Windows - Power, Driver One-Touch
Seats -Power Front, Driver/Passenger
STRIPE/BADGE/MOLDING/COLOR
STRIPE/BADGE/MOLDING/COLOR
Illuminated Entry
Warning Chime
Vehicle Information Center
Lamps - Courtesy
Lamp - Glove Box
Lamp - Ash Tray
Lamps - Rear Courtesy/Reading
Lamp - Cargo Compartment
Traveler/Mini Trip Computer
Headlamps - Halogen
Headlamps - Automatic
Lamp - Center Hi-Mount Stop
Security Alarm
Bracket - Front License Plate
Grille - Bright
Windshield Moldings - Black
Badge - Grand Cherokee, Bright
Badge - Jeep, Bright
Badge - V-8, Liftgate, Bright
Roof Rack
Badge - 4 X 4
Emissions - U.S. 50 State
Emissions - High Altitude Tracking
Low Emission Vehicle (LEV)
Fuel Tank - 20.5 Gallon
Cooler - Power Steering
Speed Control
Engine Cooling - Hydraulic
Patriot Blue Pearl Coat
Patriot Blue Pearl Coat
All Radio Equipped Vehicles
Radio-AM/FM Cass/CD/Equal/Chgr Ctrl
Speaker System - Infinity
Antenna - Fixed
Audio Ctrls-Steering Wheel Mounted
Steering - Power Rack and Pinion
Steering Wheel - Leather Wrapped
Suspension - Normal Duty
Steering Column - Tilt
Spare Tire - Inside Mount
Spare Tire- Full Size, Matching Whl
Tires - P245/70R16 OWL All Terrain
Goodyear Brand Tires
Wheels - 16 x 7.0 Lux Alum, Silver
Wheels - All Aluminum
Pedals - Power Adjustable
Hitch - Class IV Receiver
Wiring Harness - 7 Pin
Adaptor - 7 to 4 Pin, Wiring
Garage Door Opener - Universal
Protective Coating and Remover
Build To U S Market Specifications
Manuf Statement of Origin
7 Additional Gallons Of Gas
Spring - Left Front
Spring - Left Rear
Spring - Right Front
Spring - Right Rear
GVW/Payload Rating
Four Wheel Drive (4WD)/(4X4)
Left Hand Drive (LHD)
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Will Honea wrote:
>
> Bad gas, dirty air filter, go back to sea level.
>
> Seriously, at 8000 ft you will have lost over a third of your
> theoretical power (pushing 50% trying to top Vail Pass). I start at
> 6000+ and still notice the drop in power as I cross the Continental
> Divide - but having flown light aircraft in the mountains I'm a lot
> more aware of the effect than most people. Now consider the grades
> you are encountering and you can really feel it. Heck, I notice the
> difference when I drive down to the Texas coast and back up. After
> Raton Pass I fell like I should put my foot out and push going up
> hill.
>
> If you lived up here and replaced the CPS, the dealer would give you
> one that advances the base timing by several degrees. Given the stall
> at idle, it could also be either a bad TPS or (more commonly) a dirty
> connector on the TPS that was giving a bad reading at idle and/or WOT.
>
> Just to give you a better feel for the effect of altitude: light a/c,
> normally aspirated - even with fuel injection - pretty much reach
> their service ceiling at about 14000 or so.
>
> --
> Will Honea
Back when I was serious drag racer in the sixties we bought engines
cast for Colorado to gain a compression ratio running stock classes.
This Cherokee build order eludes to the difference still in cars:
"Emissions - High Altitude Tracking".
Seats - Cloth Low-Back Bucket
Luxury Group
Trailer Tow Group IV
Monotone Paint
4.7L Eng (EVA)/5Spd A/T 5-45Rfe(DGQ)
Alternator - 136 Amp
Battery - 625 Amp Maintenance Free
Brakes - Anti-Lock 4-Wheel Disc
Seats - Low Back Bucket
Door Trim Panel - Highline
Seat - Rear 60/40 Folding
Air Bags - Side, Supplemental
Child Seat Anchor System-LATCH Ready
Air Bags-Front,Next Gen,Multistage**
Air Bag-Side Window Curtain,Frt & Rr
Carpet - Floor
Carpet - Cargo Compartment
Cargo Tie Down Loops
Floor Mats - Front & Rear
Cargo Trim Panel w/Storage Net
Scuff Pads - Door Sill
Cover - Cargo Compartment
Assist Handles - Passenger
Console - Mini Overhead
Console - Full Length Floor
Transmission - All 5-Speed Automatic
Transmission-5-Spd Automatic 5-45RFE
Torque Converter - Lock-Up
Selec-Trac Full Time 4WD System
Axle - Front, Dana 30/186MM
Axle Ratio - 3.73
Axle - Rear, Dana 44/226MM
Engine- 4.7L V8 MPI
Windshield Glass - Tinted
Glass - Front Door Tinted
Glass - Deep Tint Sunscreen
Glass - Flipper Liftgate
Defroster - Rear Window
Sun Visors - Illum Vanity Mirrors
Mirror - Rear View, Auto Dim
Mirrors - Power, Fold-Away
Keyless Entry - Remote
Sentry Key Theft Deterrent System
Air Conditioning
Insulation - Hood
Insulation Group - Deluxe
Route 24 - UP, Rolla, CO
Instrument Cluster w/Tach
Speedometer - 120 MPH Primary
Windshield Wipers - Var Intermittent
Wiper/Washer - Rear Window
Horns - Electric, Dual Note
Glove Box - Locking
Power Outlet - Auxiliary 12V
Power Accessory Delay
Locks - Power
Windows - Power, Driver One-Touch
Seats -Power Front, Driver/Passenger
STRIPE/BADGE/MOLDING/COLOR
STRIPE/BADGE/MOLDING/COLOR
Illuminated Entry
Warning Chime
Vehicle Information Center
Lamps - Courtesy
Lamp - Glove Box
Lamp - Ash Tray
Lamps - Rear Courtesy/Reading
Lamp - Cargo Compartment
Traveler/Mini Trip Computer
Headlamps - Halogen
Headlamps - Automatic
Lamp - Center Hi-Mount Stop
Security Alarm
Bracket - Front License Plate
Grille - Bright
Windshield Moldings - Black
Badge - Grand Cherokee, Bright
Badge - Jeep, Bright
Badge - V-8, Liftgate, Bright
Roof Rack
Badge - 4 X 4
Emissions - U.S. 50 State
Emissions - High Altitude Tracking
Low Emission Vehicle (LEV)
Fuel Tank - 20.5 Gallon
Cooler - Power Steering
Speed Control
Engine Cooling - Hydraulic
Patriot Blue Pearl Coat
Patriot Blue Pearl Coat
All Radio Equipped Vehicles
Radio-AM/FM Cass/CD/Equal/Chgr Ctrl
Speaker System - Infinity
Antenna - Fixed
Audio Ctrls-Steering Wheel Mounted
Steering - Power Rack and Pinion
Steering Wheel - Leather Wrapped
Suspension - Normal Duty
Steering Column - Tilt
Spare Tire - Inside Mount
Spare Tire- Full Size, Matching Whl
Tires - P245/70R16 OWL All Terrain
Goodyear Brand Tires
Wheels - 16 x 7.0 Lux Alum, Silver
Wheels - All Aluminum
Pedals - Power Adjustable
Hitch - Class IV Receiver
Wiring Harness - 7 Pin
Adaptor - 7 to 4 Pin, Wiring
Garage Door Opener - Universal
Protective Coating and Remover
Build To U S Market Specifications
Manuf Statement of Origin
7 Additional Gallons Of Gas
Spring - Left Front
Spring - Left Rear
Spring - Right Front
Spring - Right Rear
GVW/Payload Rating
Four Wheel Drive (4WD)/(4X4)
Left Hand Drive (LHD)
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Will Honea wrote:
>
> Bad gas, dirty air filter, go back to sea level.
>
> Seriously, at 8000 ft you will have lost over a third of your
> theoretical power (pushing 50% trying to top Vail Pass). I start at
> 6000+ and still notice the drop in power as I cross the Continental
> Divide - but having flown light aircraft in the mountains I'm a lot
> more aware of the effect than most people. Now consider the grades
> you are encountering and you can really feel it. Heck, I notice the
> difference when I drive down to the Texas coast and back up. After
> Raton Pass I fell like I should put my foot out and push going up
> hill.
>
> If you lived up here and replaced the CPS, the dealer would give you
> one that advances the base timing by several degrees. Given the stall
> at idle, it could also be either a bad TPS or (more commonly) a dirty
> connector on the TPS that was giving a bad reading at idle and/or WOT.
>
> Just to give you a better feel for the effect of altitude: light a/c,
> normally aspirated - even with fuel injection - pretty much reach
> their service ceiling at about 14000 or so.
>
> --
> Will Honea