Having a bit of a rough idle and **** poor mileage.

The mileage is probably due to the Code 14 (MAP sensor
voltage too low). If the engine ever burps the MAP
sensor gets nailed. Got to rig a pressure bypass for
that. :/

Anyhoo.. back to the subject line..

I measured the CPS sensor (across pins B&C)
as indicated in ye olde service manual. Says
that it should be infinite (open) but I'm getting
3.01Meg.

(B is the center pin and C is on the right side
if the clip is up.)
__| |__
( a b c )

Before fixing that I'd like to know if anyone else
has measured a good sensor and what it tested as.

--
DougW

 

Sorry, Doug - I'm tearing hair out trying to assign words to
CPS sensor! TPS is no problem, CHT is no problem, but I'm
just freakin' on this CPS. Tell me and make me feel foolish!

DougW <post.replies@invalid.address> wrote in message
news:ZMdZb.27848$Zt4.10104@okepread01...
> Having a bit of a rough idle and **** poor mileage.
>
> The mileage is probably due to the Code 14 (MAP sensor
> voltage too low). If the engine ever burps the MAP
> sensor gets nailed. Got to rig a pressure bypass for
> that. :/
>
> Anyhoo.. back to the subject line..
>
> I measured the CPS sensor (across pins B&C)
> as indicated in ye olde service manual. Says
> that it should be infinite (open) but I'm getting
> 3.01Meg.
>
> (B is the center pin and C is on the right side
> if the clip is up.)
> __| |__
> ( a b c )
>
> Before fixing that I'd like to know if anyone else
> has measured a good sensor and what it tested as.
>
> --
> DougW
>
>

 

Sorry, Doug - I'm tearing hair out trying to assign words to
CPS sensor! TPS is no problem, CHT is no problem, but I'm
just freakin' on this CPS. Tell me and make me feel foolish!

DougW <post.replies@invalid.address> wrote in message
news:ZMdZb.27848$Zt4.10104@okepread01...
> Having a bit of a rough idle and **** poor mileage.
>
> The mileage is probably due to the Code 14 (MAP sensor
> voltage too low). If the engine ever burps the MAP
> sensor gets nailed. Got to rig a pressure bypass for
> that. :/
>
> Anyhoo.. back to the subject line..
>
> I measured the CPS sensor (across pins B&C)
> as indicated in ye olde service manual. Says
> that it should be infinite (open) but I'm getting
> 3.01Meg.
>
> (B is the center pin and C is on the right side
> if the clip is up.)
> __| |__
> ( a b c )
>
> Before fixing that I'd like to know if anyone else
> has measured a good sensor and what it tested as.
>
> --
> DougW
>
>

 

Sorry, Doug - I'm tearing hair out trying to assign words to
CPS sensor! TPS is no problem, CHT is no problem, but I'm
just freakin' on this CPS. Tell me and make me feel foolish!

DougW <post.replies@invalid.address> wrote in message
news:ZMdZb.27848$Zt4.10104@okepread01...
> Having a bit of a rough idle and **** poor mileage.
>
> The mileage is probably due to the Code 14 (MAP sensor
> voltage too low). If the engine ever burps the MAP
> sensor gets nailed. Got to rig a pressure bypass for
> that. :/
>
> Anyhoo.. back to the subject line..
>
> I measured the CPS sensor (across pins B&C)
> as indicated in ye olde service manual. Says
> that it should be infinite (open) but I'm getting
> 3.01Meg.
>
> (B is the center pin and C is on the right side
> if the clip is up.)
> __| |__
> ( a b c )
>
> Before fixing that I'd like to know if anyone else
> has measured a good sensor and what it tested as.
>
> --
> DougW
>
>

 

CRANKSHAFT POSITION SENSOR:
http://members.***.net/wilsond/Fixes...tml#CPSdetails
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Busahaulic wrote:
>
> Sorry, Doug - I'm tearing hair out trying to assign words to
> CPS sensor! TPS is no problem, CHT is no problem, but I'm
> just freakin' on this CPS. Tell me and make me feel foolish!

 

CRANKSHAFT POSITION SENSOR:
http://members.***.net/wilsond/Fixes...tml#CPSdetails
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Busahaulic wrote:
>
> Sorry, Doug - I'm tearing hair out trying to assign words to
> CPS sensor! TPS is no problem, CHT is no problem, but I'm
> just freakin' on this CPS. Tell me and make me feel foolish!

 

CRANKSHAFT POSITION SENSOR:
http://members.***.net/wilsond/Fixes...tml#CPSdetails
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Busahaulic wrote:
>
> Sorry, Doug - I'm tearing hair out trying to assign words to
> CPS sensor! TPS is no problem, CHT is no problem, but I'm
> just freakin' on this CPS. Tell me and make me feel foolish!

 

L.W. (ßill) ------ III did pass the time by typing:
> CRANKSHAFT POSITION SENSOR:
> http://members.***.net/wilsond/Fixes...tml#CPSdetails
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Busahaulic wrote:
>>
>> Sorry, Doug - I'm tearing hair out trying to assign words to
>> CPS sensor! TPS is no problem, CHT is no problem, but I'm
>> just freakin' on this CPS. Tell me and make me feel foolish!

Heh.. sorry about that.

Jeep has two "CPS" sensors. One is the Crankshaft Position Sensor
(located on the transmission hump) and the other is the Camshaft
Position Sensor (located at the base of ye olde distributor).

Like ßill says, I'm looking at the Crankshaft sensor. Ref pic.
http://members.***.net/wilsond/Fixes...tml#CPSdetails

....

Although I think I've found the problem. After checking every dagnabbit
electrical doodad I hooked up my vac bleeder (pump/gauge) to the Evap
canister. The vac valve worked perfectly and held vaccuume.

Then I hooked the gauge up to the feed and started the engine.

.......zero vac....... :(

The engine heat had melted one of the hardlines. I replaced the line
and now it's running better. Not perfect yet, but hopefully that was
the problem.

--
DougW

 

L.W. (ßill) ------ III did pass the time by typing:
> CRANKSHAFT POSITION SENSOR:
> http://members.***.net/wilsond/Fixes...tml#CPSdetails
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Busahaulic wrote:
>>
>> Sorry, Doug - I'm tearing hair out trying to assign words to
>> CPS sensor! TPS is no problem, CHT is no problem, but I'm
>> just freakin' on this CPS. Tell me and make me feel foolish!

Heh.. sorry about that.

Jeep has two "CPS" sensors. One is the Crankshaft Position Sensor
(located on the transmission hump) and the other is the Camshaft
Position Sensor (located at the base of ye olde distributor).

Like ßill says, I'm looking at the Crankshaft sensor. Ref pic.
http://members.***.net/wilsond/Fixes...tml#CPSdetails

....

Although I think I've found the problem. After checking every dagnabbit
electrical doodad I hooked up my vac bleeder (pump/gauge) to the Evap
canister. The vac valve worked perfectly and held vaccuume.

Then I hooked the gauge up to the feed and started the engine.

.......zero vac....... :(

The engine heat had melted one of the hardlines. I replaced the line
and now it's running better. Not perfect yet, but hopefully that was
the problem.

--
DougW

 

L.W. (ßill) ------ III did pass the time by typing:
> CRANKSHAFT POSITION SENSOR:
> http://members.***.net/wilsond/Fixes...tml#CPSdetails
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Busahaulic wrote:
>>
>> Sorry, Doug - I'm tearing hair out trying to assign words to
>> CPS sensor! TPS is no problem, CHT is no problem, but I'm
>> just freakin' on this CPS. Tell me and make me feel foolish!

Heh.. sorry about that.

Jeep has two "CPS" sensors. One is the Crankshaft Position Sensor
(located on the transmission hump) and the other is the Camshaft
Position Sensor (located at the base of ye olde distributor).

Like ßill says, I'm looking at the Crankshaft sensor. Ref pic.
http://members.***.net/wilsond/Fixes...tml#CPSdetails

....

Although I think I've found the problem. After checking every dagnabbit
electrical doodad I hooked up my vac bleeder (pump/gauge) to the Evap
canister. The vac valve worked perfectly and held vaccuume.

Then I hooked the gauge up to the feed and started the engine.

.......zero vac....... :(

The engine heat had melted one of the hardlines. I replaced the line
and now it's running better. Not perfect yet, but hopefully that was
the problem.

--
DougW