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-   -   97 Wrangler loss of power (https://www.jeepscanada.com/jeep-mailing-list-32/97-wrangler-loss-power-34170/)

Keith Orbell 01-02-2006 09:56 AM

97 Wrangler loss of power
 
I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
clock.

About a week ago the Jeep started to suffer from a lack of power: it will
run and idle fine, but when moving up to freeway speeds (>50mph) it feels
like it is struggling. There is no obvious misfire or hesitation in the
engine - it just feels weaker than normal . Actually it's a little like when
the A/C is turned on a vehicle with a small capacity engine.

Any ideas where to start looking? I noticed that the radiator fan is always
running (even at cold idle). I'm not sure if that should be the case or if
this is somehow related to the lack of power.

Thanks in advance for any help
Keith





Spdloader 01-02-2006 10:03 AM

Re: 97 Wrangler loss of power
 
Did you or do you have a noisy exhaust? Sometimes a problem with the
catalytic converter will result in loss of power. If the substrate in the
converter breaks up, it will sometimes be noisy before it starts to "plug
up" the exhaust.

Spdloader



"Keith Orbell" <quite98@hotmail.com> wrote in message
news:sImdnXUMZO5ioyTeRVn-pw@wideopenwest.com...
>I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
>clock.
>
> About a week ago the Jeep started to suffer from a lack of power: it will
> run and idle fine, but when moving up to freeway speeds (>50mph) it feels
> like it is struggling. There is no obvious misfire or hesitation in the
> engine - it just feels weaker than normal . Actually it's a little like
> when the A/C is turned on a vehicle with a small capacity engine.
>
> Any ideas where to start looking? I noticed that the radiator fan is
> always running (even at cold idle). I'm not sure if that should be the
> case or if this is somehow related to the lack of power.
>
> Thanks in advance for any help
> Keith
>
>
>
>




Spdloader 01-02-2006 10:03 AM

Re: 97 Wrangler loss of power
 
Did you or do you have a noisy exhaust? Sometimes a problem with the
catalytic converter will result in loss of power. If the substrate in the
converter breaks up, it will sometimes be noisy before it starts to "plug
up" the exhaust.

Spdloader



"Keith Orbell" <quite98@hotmail.com> wrote in message
news:sImdnXUMZO5ioyTeRVn-pw@wideopenwest.com...
>I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
>clock.
>
> About a week ago the Jeep started to suffer from a lack of power: it will
> run and idle fine, but when moving up to freeway speeds (>50mph) it feels
> like it is struggling. There is no obvious misfire or hesitation in the
> engine - it just feels weaker than normal . Actually it's a little like
> when the A/C is turned on a vehicle with a small capacity engine.
>
> Any ideas where to start looking? I noticed that the radiator fan is
> always running (even at cold idle). I'm not sure if that should be the
> case or if this is somehow related to the lack of power.
>
> Thanks in advance for any help
> Keith
>
>
>
>




Spdloader 01-02-2006 10:03 AM

Re: 97 Wrangler loss of power
 
Did you or do you have a noisy exhaust? Sometimes a problem with the
catalytic converter will result in loss of power. If the substrate in the
converter breaks up, it will sometimes be noisy before it starts to "plug
up" the exhaust.

Spdloader



"Keith Orbell" <quite98@hotmail.com> wrote in message
news:sImdnXUMZO5ioyTeRVn-pw@wideopenwest.com...
>I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
>clock.
>
> About a week ago the Jeep started to suffer from a lack of power: it will
> run and idle fine, but when moving up to freeway speeds (>50mph) it feels
> like it is struggling. There is no obvious misfire or hesitation in the
> engine - it just feels weaker than normal . Actually it's a little like
> when the A/C is turned on a vehicle with a small capacity engine.
>
> Any ideas where to start looking? I noticed that the radiator fan is
> always running (even at cold idle). I'm not sure if that should be the
> case or if this is somehow related to the lack of power.
>
> Thanks in advance for any help
> Keith
>
>
>
>




DougW 01-02-2006 10:26 AM

Re: 97 Wrangler loss of power
 
Keith Orbell did pass the time by typing:
> I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
> clock.
>
> About a week ago the Jeep started to suffer from a lack of power: it will
> run and idle fine, but when moving up to freeway speeds (>50mph) it feels
> like it is struggling. There is no obvious misfire or hesitation in the
> engine - it just feels weaker than normal . Actually it's a little like when
> the A/C is turned on a vehicle with a small capacity engine.
>
> Any ideas where to start looking? I noticed that the radiator fan is always
> running (even at cold idle). I'm not sure if that should be the case or if
> this is somehow related to the lack of power.


Sounds like a backpressure problem, plugged cat.

If you have a vac gauge, hook it to the intake and watch
what happens when you bring up the RPMs.

Bring the engine to 2500 rpm and check the manifold vacuum
for at least 15 seconds. If system vacuum is high and steady
then the exhaust system is probably ok. If the vacuum drops
it's probably a clogged cat.

Now if you replace the cat the question is what clogged it.
Usually that answer is the O2 sensor. The O2 sensor usually fails
slowly and as it does makes the mix richer.

An aftermarket high-flow cat should set you back about $100 with install
at a good local shop.

--
DougW



DougW 01-02-2006 10:26 AM

Re: 97 Wrangler loss of power
 
Keith Orbell did pass the time by typing:
> I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
> clock.
>
> About a week ago the Jeep started to suffer from a lack of power: it will
> run and idle fine, but when moving up to freeway speeds (>50mph) it feels
> like it is struggling. There is no obvious misfire or hesitation in the
> engine - it just feels weaker than normal . Actually it's a little like when
> the A/C is turned on a vehicle with a small capacity engine.
>
> Any ideas where to start looking? I noticed that the radiator fan is always
> running (even at cold idle). I'm not sure if that should be the case or if
> this is somehow related to the lack of power.


Sounds like a backpressure problem, plugged cat.

If you have a vac gauge, hook it to the intake and watch
what happens when you bring up the RPMs.

Bring the engine to 2500 rpm and check the manifold vacuum
for at least 15 seconds. If system vacuum is high and steady
then the exhaust system is probably ok. If the vacuum drops
it's probably a clogged cat.

Now if you replace the cat the question is what clogged it.
Usually that answer is the O2 sensor. The O2 sensor usually fails
slowly and as it does makes the mix richer.

An aftermarket high-flow cat should set you back about $100 with install
at a good local shop.

--
DougW



DougW 01-02-2006 10:26 AM

Re: 97 Wrangler loss of power
 
Keith Orbell did pass the time by typing:
> I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
> clock.
>
> About a week ago the Jeep started to suffer from a lack of power: it will
> run and idle fine, but when moving up to freeway speeds (>50mph) it feels
> like it is struggling. There is no obvious misfire or hesitation in the
> engine - it just feels weaker than normal . Actually it's a little like when
> the A/C is turned on a vehicle with a small capacity engine.
>
> Any ideas where to start looking? I noticed that the radiator fan is always
> running (even at cold idle). I'm not sure if that should be the case or if
> this is somehow related to the lack of power.


Sounds like a backpressure problem, plugged cat.

If you have a vac gauge, hook it to the intake and watch
what happens when you bring up the RPMs.

Bring the engine to 2500 rpm and check the manifold vacuum
for at least 15 seconds. If system vacuum is high and steady
then the exhaust system is probably ok. If the vacuum drops
it's probably a clogged cat.

Now if you replace the cat the question is what clogged it.
Usually that answer is the O2 sensor. The O2 sensor usually fails
slowly and as it does makes the mix richer.

An aftermarket high-flow cat should set you back about $100 with install
at a good local shop.

--
DougW



Earle Horton 01-02-2006 11:57 AM

Re: 97 Wrangler loss of power
 
I like to look at the cheap stuff first. Inspect the distributor cap,
rotor, plugs, etc. Did you leave the emergency brake on? Spark plug wires
can fool you too. How many miles on them?

Earle

"Keith Orbell" <quite98@hotmail.com> wrote in message
news:sImdnXUMZO5ioyTeRVn-pw@wideopenwest.com...
> I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
> clock.
>
> About a week ago the Jeep started to suffer from a lack of power: it will
> run and idle fine, but when moving up to freeway speeds (>50mph) it feels
> like it is struggling. There is no obvious misfire or hesitation in the
> engine - it just feels weaker than normal . Actually it's a little like

when
> the A/C is turned on a vehicle with a small capacity engine.
>
> Any ideas where to start looking? I noticed that the radiator fan is

always
> running (even at cold idle). I'm not sure if that should be the case or if
> this is somehow related to the lack of power.
>
> Thanks in advance for any help
> Keith
>
>
>
>




Earle Horton 01-02-2006 11:57 AM

Re: 97 Wrangler loss of power
 
I like to look at the cheap stuff first. Inspect the distributor cap,
rotor, plugs, etc. Did you leave the emergency brake on? Spark plug wires
can fool you too. How many miles on them?

Earle

"Keith Orbell" <quite98@hotmail.com> wrote in message
news:sImdnXUMZO5ioyTeRVn-pw@wideopenwest.com...
> I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
> clock.
>
> About a week ago the Jeep started to suffer from a lack of power: it will
> run and idle fine, but when moving up to freeway speeds (>50mph) it feels
> like it is struggling. There is no obvious misfire or hesitation in the
> engine - it just feels weaker than normal . Actually it's a little like

when
> the A/C is turned on a vehicle with a small capacity engine.
>
> Any ideas where to start looking? I noticed that the radiator fan is

always
> running (even at cold idle). I'm not sure if that should be the case or if
> this is somehow related to the lack of power.
>
> Thanks in advance for any help
> Keith
>
>
>
>




Earle Horton 01-02-2006 11:57 AM

Re: 97 Wrangler loss of power
 
I like to look at the cheap stuff first. Inspect the distributor cap,
rotor, plugs, etc. Did you leave the emergency brake on? Spark plug wires
can fool you too. How many miles on them?

Earle

"Keith Orbell" <quite98@hotmail.com> wrote in message
news:sImdnXUMZO5ioyTeRVn-pw@wideopenwest.com...
> I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
> clock.
>
> About a week ago the Jeep started to suffer from a lack of power: it will
> run and idle fine, but when moving up to freeway speeds (>50mph) it feels
> like it is struggling. There is no obvious misfire or hesitation in the
> engine - it just feels weaker than normal . Actually it's a little like

when
> the A/C is turned on a vehicle with a small capacity engine.
>
> Any ideas where to start looking? I noticed that the radiator fan is

always
> running (even at cold idle). I'm not sure if that should be the case or if
> this is somehow related to the lack of power.
>
> Thanks in advance for any help
> Keith
>
>
>
>




Earle Horton 01-02-2006 12:07 PM

Re: 97 Wrangler loss of power
 
I like to look at the cheap stuff first. Inspect the distributor cap,
rotor, plugs, etc. Did you leave the emergency brake on? Spark plug wires
can fool you too. How many miles on them?

Earle

"Keith Orbell" <quite98@hotmail.com> wrote in message
news:sImdnXUMZO5ioyTeRVn-pw@wideopenwest.com...
> I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
> clock.
>
> About a week ago the Jeep started to suffer from a lack of power: it will
> run and idle fine, but when moving up to freeway speeds (>50mph) it feels
> like it is struggling. There is no obvious misfire or hesitation in the
> engine - it just feels weaker than normal . Actually it's a little like

when
> the A/C is turned on a vehicle with a small capacity engine.
>
> Any ideas where to start looking? I noticed that the radiator fan is

always
> running (even at cold idle). I'm not sure if that should be the case or if
> this is somehow related to the lack of power.
>
> Thanks in advance for any help
> Keith
>
>
>
>





Earle Horton 01-02-2006 12:07 PM

Re: 97 Wrangler loss of power
 
I like to look at the cheap stuff first. Inspect the distributor cap,
rotor, plugs, etc. Did you leave the emergency brake on? Spark plug wires
can fool you too. How many miles on them?

Earle

"Keith Orbell" <quite98@hotmail.com> wrote in message
news:sImdnXUMZO5ioyTeRVn-pw@wideopenwest.com...
> I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
> clock.
>
> About a week ago the Jeep started to suffer from a lack of power: it will
> run and idle fine, but when moving up to freeway speeds (>50mph) it feels
> like it is struggling. There is no obvious misfire or hesitation in the
> engine - it just feels weaker than normal . Actually it's a little like

when
> the A/C is turned on a vehicle with a small capacity engine.
>
> Any ideas where to start looking? I noticed that the radiator fan is

always
> running (even at cold idle). I'm not sure if that should be the case or if
> this is somehow related to the lack of power.
>
> Thanks in advance for any help
> Keith
>
>
>
>





Earle Horton 01-02-2006 12:07 PM

Re: 97 Wrangler loss of power
 
I like to look at the cheap stuff first. Inspect the distributor cap,
rotor, plugs, etc. Did you leave the emergency brake on? Spark plug wires
can fool you too. How many miles on them?

Earle

"Keith Orbell" <quite98@hotmail.com> wrote in message
news:sImdnXUMZO5ioyTeRVn-pw@wideopenwest.com...
> I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
> clock.
>
> About a week ago the Jeep started to suffer from a lack of power: it will
> run and idle fine, but when moving up to freeway speeds (>50mph) it feels
> like it is struggling. There is no obvious misfire or hesitation in the
> engine - it just feels weaker than normal . Actually it's a little like

when
> the A/C is turned on a vehicle with a small capacity engine.
>
> Any ideas where to start looking? I noticed that the radiator fan is

always
> running (even at cold idle). I'm not sure if that should be the case or if
> this is somehow related to the lack of power.
>
> Thanks in advance for any help
> Keith
>
>
>
>





Earle Horton 01-02-2006 12:07 PM

Re: 97 Wrangler loss of power
 
I like to look at the cheap stuff first. Inspect the distributor cap,
rotor, plugs, etc. Did you leave the emergency brake on? Spark plug wires
can fool you too. How many miles on them?

Earle

"Keith Orbell" <quite98@hotmail.com> wrote in message
news:sImdnXUMZO5ioyTeRVn-pw@wideopenwest.com...
> I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
> clock.
>
> About a week ago the Jeep started to suffer from a lack of power: it will
> run and idle fine, but when moving up to freeway speeds (>50mph) it feels
> like it is struggling. There is no obvious misfire or hesitation in the
> engine - it just feels weaker than normal . Actually it's a little like

when
> the A/C is turned on a vehicle with a small capacity engine.
>
> Any ideas where to start looking? I noticed that the radiator fan is

always
> running (even at cold idle). I'm not sure if that should be the case or if
> this is somehow related to the lack of power.
>
> Thanks in advance for any help
> Keith
>
>
>
>





Earle Horton 01-02-2006 12:07 PM

Re: 97 Wrangler loss of power
 
I like to look at the cheap stuff first. Inspect the distributor cap,
rotor, plugs, etc. Did you leave the emergency brake on? Spark plug wires
can fool you too. How many miles on them?

Earle

"Keith Orbell" <quite98@hotmail.com> wrote in message
news:sImdnXUMZO5ioyTeRVn-pw@wideopenwest.com...
> I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
> clock.
>
> About a week ago the Jeep started to suffer from a lack of power: it will
> run and idle fine, but when moving up to freeway speeds (>50mph) it feels
> like it is struggling. There is no obvious misfire or hesitation in the
> engine - it just feels weaker than normal . Actually it's a little like

when
> the A/C is turned on a vehicle with a small capacity engine.
>
> Any ideas where to start looking? I noticed that the radiator fan is

always
> running (even at cold idle). I'm not sure if that should be the case or if
> this is somehow related to the lack of power.
>
> Thanks in advance for any help
> Keith
>
>
>
>





Earle Horton 01-02-2006 12:07 PM

Re: 97 Wrangler loss of power
 
I like to look at the cheap stuff first. Inspect the distributor cap,
rotor, plugs, etc. Did you leave the emergency brake on? Spark plug wires
can fool you too. How many miles on them?

Earle

"Keith Orbell" <quite98@hotmail.com> wrote in message
news:sImdnXUMZO5ioyTeRVn-pw@wideopenwest.com...
> I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
> clock.
>
> About a week ago the Jeep started to suffer from a lack of power: it will
> run and idle fine, but when moving up to freeway speeds (>50mph) it feels
> like it is struggling. There is no obvious misfire or hesitation in the
> engine - it just feels weaker than normal . Actually it's a little like

when
> the A/C is turned on a vehicle with a small capacity engine.
>
> Any ideas where to start looking? I noticed that the radiator fan is

always
> running (even at cold idle). I'm not sure if that should be the case or if
> this is somehow related to the lack of power.
>
> Thanks in advance for any help
> Keith
>
>
>
>





Jerry Bransford 01-02-2006 03:14 PM

Re: 97 Wrangler loss of power
 
The other suggestions like a possibly bad/plugged catalytic converter
are good but also be aware your upstream (nearest to the exhaust
manifold) 02 sensor can cause a dramatic loss of power and fuel economy
when it goes bad... and they do go bad. See if you have any stored
diagnostic codes using the procedure at
http://www.allpar.com/fix/80s-codes.html which might tell you what the
problem is. When doing the three on-off-on ignition sequence, make sure
to give it time to start displaying the codes, it can take as long as
5-10 seconds before the codes begin appearing so have patience. If you
did the ignition key sequence properly, you will at least get the usual
'55' code which is always shown and follows any other possible codes.

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/

Jerry Bransford 01-02-2006 03:14 PM

Re: 97 Wrangler loss of power
 
The other suggestions like a possibly bad/plugged catalytic converter
are good but also be aware your upstream (nearest to the exhaust
manifold) 02 sensor can cause a dramatic loss of power and fuel economy
when it goes bad... and they do go bad. See if you have any stored
diagnostic codes using the procedure at
http://www.allpar.com/fix/80s-codes.html which might tell you what the
problem is. When doing the three on-off-on ignition sequence, make sure
to give it time to start displaying the codes, it can take as long as
5-10 seconds before the codes begin appearing so have patience. If you
did the ignition key sequence properly, you will at least get the usual
'55' code which is always shown and follows any other possible codes.

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/

Jerry Bransford 01-02-2006 03:14 PM

Re: 97 Wrangler loss of power
 
The other suggestions like a possibly bad/plugged catalytic converter
are good but also be aware your upstream (nearest to the exhaust
manifold) 02 sensor can cause a dramatic loss of power and fuel economy
when it goes bad... and they do go bad. See if you have any stored
diagnostic codes using the procedure at
http://www.allpar.com/fix/80s-codes.html which might tell you what the
problem is. When doing the three on-off-on ignition sequence, make sure
to give it time to start displaying the codes, it can take as long as
5-10 seconds before the codes begin appearing so have patience. If you
did the ignition key sequence properly, you will at least get the usual
'55' code which is always shown and follows any other possible codes.

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/

Jerry Bransford 01-02-2006 03:15 PM

Re: 97 Wrangler loss of power
 
P.S. Though that website says to count the number of flashes on the
Check Engine light, there's no need to count them on your '97 TJ. The
actual numeric codes will appear in the odometer display.

Jerry

Jerry Bransford wrote:
> The other suggestions like a possibly bad/plugged catalytic converter
> are good but also be aware your upstream (nearest to the exhaust
> manifold) 02 sensor can cause a dramatic loss of power and fuel economy
> when it goes bad... and they do go bad. See if you have any stored
> diagnostic codes using the procedure at
> http://www.allpar.com/fix/80s-codes.html which might tell you what the
> problem is. When doing the three on-off-on ignition sequence, make sure
> to give it time to start displaying the codes, it can take as long as
> 5-10 seconds before the codes begin appearing so have patience. If you
> did the ignition key sequence properly, you will at least get the usual
> '55' code which is always shown and follows any other possible codes.
>
> Jerry


--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/

Jerry Bransford 01-02-2006 03:15 PM

Re: 97 Wrangler loss of power
 
P.S. Though that website says to count the number of flashes on the
Check Engine light, there's no need to count them on your '97 TJ. The
actual numeric codes will appear in the odometer display.

Jerry

Jerry Bransford wrote:
> The other suggestions like a possibly bad/plugged catalytic converter
> are good but also be aware your upstream (nearest to the exhaust
> manifold) 02 sensor can cause a dramatic loss of power and fuel economy
> when it goes bad... and they do go bad. See if you have any stored
> diagnostic codes using the procedure at
> http://www.allpar.com/fix/80s-codes.html which might tell you what the
> problem is. When doing the three on-off-on ignition sequence, make sure
> to give it time to start displaying the codes, it can take as long as
> 5-10 seconds before the codes begin appearing so have patience. If you
> did the ignition key sequence properly, you will at least get the usual
> '55' code which is always shown and follows any other possible codes.
>
> Jerry


--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/

Jerry Bransford 01-02-2006 03:15 PM

Re: 97 Wrangler loss of power
 
P.S. Though that website says to count the number of flashes on the
Check Engine light, there's no need to count them on your '97 TJ. The
actual numeric codes will appear in the odometer display.

Jerry

Jerry Bransford wrote:
> The other suggestions like a possibly bad/plugged catalytic converter
> are good but also be aware your upstream (nearest to the exhaust
> manifold) 02 sensor can cause a dramatic loss of power and fuel economy
> when it goes bad... and they do go bad. See if you have any stored
> diagnostic codes using the procedure at
> http://www.allpar.com/fix/80s-codes.html which might tell you what the
> problem is. When doing the three on-off-on ignition sequence, make sure
> to give it time to start displaying the codes, it can take as long as
> 5-10 seconds before the codes begin appearing so have patience. If you
> did the ignition key sequence properly, you will at least get the usual
> '55' code which is always shown and follows any other possible codes.
>
> Jerry


--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/

Old Crow 01-02-2006 04:30 PM

Re: 97 Wrangler loss of power
 
On Mon, 2 Jan 2006 09:56:01 -0500, "Keith Orbell"
<quite98@hotmail.com> wrote:

>I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
>clock.
>
>About a week ago the Jeep started to suffer from a lack of power: it will
>run and idle fine, but when moving up to freeway speeds (>50mph) it feels
>like it is struggling. There is no obvious misfire or hesitation in the
>engine - it just feels weaker than normal . Actually it's a little like when
>the A/C is turned on a vehicle with a small capacity engine.
>
>Any ideas where to start looking? I noticed that the radiator fan is always
>running (even at cold idle). I'm not sure if that should be the case or if
>this is somehow related to the lack of power.
>
>Thanks in advance for any help
>Keith
>
>
>

Fuel filter?
--
Old Crow
'82 FLTC-P "Miss Pearl"
'74 XLH chopper(somebody else's baby now)
BS#133, SENS, TOMKAT, MAMBM, DOF#51, DH#2
"There's only 1 RE"

Old Crow 01-02-2006 04:30 PM

Re: 97 Wrangler loss of power
 
On Mon, 2 Jan 2006 09:56:01 -0500, "Keith Orbell"
<quite98@hotmail.com> wrote:

>I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
>clock.
>
>About a week ago the Jeep started to suffer from a lack of power: it will
>run and idle fine, but when moving up to freeway speeds (>50mph) it feels
>like it is struggling. There is no obvious misfire or hesitation in the
>engine - it just feels weaker than normal . Actually it's a little like when
>the A/C is turned on a vehicle with a small capacity engine.
>
>Any ideas where to start looking? I noticed that the radiator fan is always
>running (even at cold idle). I'm not sure if that should be the case or if
>this is somehow related to the lack of power.
>
>Thanks in advance for any help
>Keith
>
>
>

Fuel filter?
--
Old Crow
'82 FLTC-P "Miss Pearl"
'74 XLH chopper(somebody else's baby now)
BS#133, SENS, TOMKAT, MAMBM, DOF#51, DH#2
"There's only 1 RE"

Old Crow 01-02-2006 04:30 PM

Re: 97 Wrangler loss of power
 
On Mon, 2 Jan 2006 09:56:01 -0500, "Keith Orbell"
<quite98@hotmail.com> wrote:

>I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
>clock.
>
>About a week ago the Jeep started to suffer from a lack of power: it will
>run and idle fine, but when moving up to freeway speeds (>50mph) it feels
>like it is struggling. There is no obvious misfire or hesitation in the
>engine - it just feels weaker than normal . Actually it's a little like when
>the A/C is turned on a vehicle with a small capacity engine.
>
>Any ideas where to start looking? I noticed that the radiator fan is always
>running (even at cold idle). I'm not sure if that should be the case or if
>this is somehow related to the lack of power.
>
>Thanks in advance for any help
>Keith
>
>
>

Fuel filter?
--
Old Crow
'82 FLTC-P "Miss Pearl"
'74 XLH chopper(somebody else's baby now)
BS#133, SENS, TOMKAT, MAMBM, DOF#51, DH#2
"There's only 1 RE"

Scott in Baltimore 01-02-2006 09:43 PM

Re: 97 Wrangler loss of power
 
> Fuel filter?

The fuel filter is part of the fuel pump. I just had to
replace my pump. It came with the inner and outer filter.

Try to burn up most of your gas first. My pump died with
most of tank full. What a b*tc*!

Scott in Baltimore 01-02-2006 09:43 PM

Re: 97 Wrangler loss of power
 
> Fuel filter?

The fuel filter is part of the fuel pump. I just had to
replace my pump. It came with the inner and outer filter.

Try to burn up most of your gas first. My pump died with
most of tank full. What a b*tc*!

Scott in Baltimore 01-02-2006 09:43 PM

Re: 97 Wrangler loss of power
 
> Fuel filter?

The fuel filter is part of the fuel pump. I just had to
replace my pump. It came with the inner and outer filter.

Try to burn up most of your gas first. My pump died with
most of tank full. What a b*tc*!

Old Crow 01-03-2006 06:05 AM

Re: 97 Wrangler loss of power
 
On Mon, 02 Jan 2006 21:43:24 -0500, Scott in Baltimore
<sDcOoNtTtS_PuAnMiMtE_69@yahoo.com> wrote:

>> Fuel filter?

>
>The fuel filter is part of the fuel pump. I just had to
>replace my pump. It came with the inner and outer filter.
>
>Try to burn up most of your gas first. My pump died with
>most of tank full. What a b*tc*!


I work at a Chevy dealer as a tech. Seems the first thing most people
do when they believe the fuel pump is going bad is to fill the tank. I
*hate* dropping tanks with 20+ gal of fuel in 'em.
--
Old Crow
'82 FLTC-P "Miss Pearl"
'74 XLH chopper(somebody else's baby now)
BS#133, SENS, TOMKAT, MAMBM, DOF#51, DH#2
"There's only 1 RE"

Old Crow 01-03-2006 06:05 AM

Re: 97 Wrangler loss of power
 
On Mon, 02 Jan 2006 21:43:24 -0500, Scott in Baltimore
<sDcOoNtTtS_PuAnMiMtE_69@yahoo.com> wrote:

>> Fuel filter?

>
>The fuel filter is part of the fuel pump. I just had to
>replace my pump. It came with the inner and outer filter.
>
>Try to burn up most of your gas first. My pump died with
>most of tank full. What a b*tc*!


I work at a Chevy dealer as a tech. Seems the first thing most people
do when they believe the fuel pump is going bad is to fill the tank. I
*hate* dropping tanks with 20+ gal of fuel in 'em.
--
Old Crow
'82 FLTC-P "Miss Pearl"
'74 XLH chopper(somebody else's baby now)
BS#133, SENS, TOMKAT, MAMBM, DOF#51, DH#2
"There's only 1 RE"

Old Crow 01-03-2006 06:05 AM

Re: 97 Wrangler loss of power
 
On Mon, 02 Jan 2006 21:43:24 -0500, Scott in Baltimore
<sDcOoNtTtS_PuAnMiMtE_69@yahoo.com> wrote:

>> Fuel filter?

>
>The fuel filter is part of the fuel pump. I just had to
>replace my pump. It came with the inner and outer filter.
>
>Try to burn up most of your gas first. My pump died with
>most of tank full. What a b*tc*!


I work at a Chevy dealer as a tech. Seems the first thing most people
do when they believe the fuel pump is going bad is to fill the tank. I
*hate* dropping tanks with 20+ gal of fuel in 'em.
--
Old Crow
'82 FLTC-P "Miss Pearl"
'74 XLH chopper(somebody else's baby now)
BS#133, SENS, TOMKAT, MAMBM, DOF#51, DH#2
"There's only 1 RE"

Keith Orbell 01-04-2006 06:43 PM

Re: 97 Wrangler loss of power
 
Thanks to everybody for the advice.

The catalytic converter could well be the problem here - the exhaust is
currently pretty noisy and has been for a while. Furthermore, I replaced the
upstream O2 sensor last year after it went bad - perhaps this has had a
delayed impact on the cat.

Thanks again,
Keith

"Spdloader" <askforit@nospam.triad.rr.com> wrote in message
news:ihbuf.7789$pk4.317@tornado.southeast.rr.com.. .
> Did you or do you have a noisy exhaust? Sometimes a problem with the
> catalytic converter will result in loss of power. If the substrate in the
> converter breaks up, it will sometimes be noisy before it starts to "plug
> up" the exhaust.
>
> Spdloader
>
>
>
> "Keith Orbell" <quite98@hotmail.com> wrote in message
> news:sImdnXUMZO5ioyTeRVn-pw@wideopenwest.com...
>>I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
>>clock.
>>
>> About a week ago the Jeep started to suffer from a lack of power: it will
>> run and idle fine, but when moving up to freeway speeds (>50mph) it feels
>> like it is struggling. There is no obvious misfire or hesitation in the
>> engine - it just feels weaker than normal . Actually it's a little like
>> when the A/C is turned on a vehicle with a small capacity engine.
>>
>> Any ideas where to start looking? I noticed that the radiator fan is
>> always running (even at cold idle). I'm not sure if that should be the
>> case or if this is somehow related to the lack of power.
>>
>> Thanks in advance for any help
>> Keith
>>
>>
>>
>>

>
>




Keith Orbell 01-04-2006 06:43 PM

Re: 97 Wrangler loss of power
 
Thanks to everybody for the advice.

The catalytic converter could well be the problem here - the exhaust is
currently pretty noisy and has been for a while. Furthermore, I replaced the
upstream O2 sensor last year after it went bad - perhaps this has had a
delayed impact on the cat.

Thanks again,
Keith

"Spdloader" <askforit@nospam.triad.rr.com> wrote in message
news:ihbuf.7789$pk4.317@tornado.southeast.rr.com.. .
> Did you or do you have a noisy exhaust? Sometimes a problem with the
> catalytic converter will result in loss of power. If the substrate in the
> converter breaks up, it will sometimes be noisy before it starts to "plug
> up" the exhaust.
>
> Spdloader
>
>
>
> "Keith Orbell" <quite98@hotmail.com> wrote in message
> news:sImdnXUMZO5ioyTeRVn-pw@wideopenwest.com...
>>I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
>>clock.
>>
>> About a week ago the Jeep started to suffer from a lack of power: it will
>> run and idle fine, but when moving up to freeway speeds (>50mph) it feels
>> like it is struggling. There is no obvious misfire or hesitation in the
>> engine - it just feels weaker than normal . Actually it's a little like
>> when the A/C is turned on a vehicle with a small capacity engine.
>>
>> Any ideas where to start looking? I noticed that the radiator fan is
>> always running (even at cold idle). I'm not sure if that should be the
>> case or if this is somehow related to the lack of power.
>>
>> Thanks in advance for any help
>> Keith
>>
>>
>>
>>

>
>




Keith Orbell 01-04-2006 06:43 PM

Re: 97 Wrangler loss of power
 
Thanks to everybody for the advice.

The catalytic converter could well be the problem here - the exhaust is
currently pretty noisy and has been for a while. Furthermore, I replaced the
upstream O2 sensor last year after it went bad - perhaps this has had a
delayed impact on the cat.

Thanks again,
Keith

"Spdloader" <askforit@nospam.triad.rr.com> wrote in message
news:ihbuf.7789$pk4.317@tornado.southeast.rr.com.. .
> Did you or do you have a noisy exhaust? Sometimes a problem with the
> catalytic converter will result in loss of power. If the substrate in the
> converter breaks up, it will sometimes be noisy before it starts to "plug
> up" the exhaust.
>
> Spdloader
>
>
>
> "Keith Orbell" <quite98@hotmail.com> wrote in message
> news:sImdnXUMZO5ioyTeRVn-pw@wideopenwest.com...
>>I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
>>clock.
>>
>> About a week ago the Jeep started to suffer from a lack of power: it will
>> run and idle fine, but when moving up to freeway speeds (>50mph) it feels
>> like it is struggling. There is no obvious misfire or hesitation in the
>> engine - it just feels weaker than normal . Actually it's a little like
>> when the A/C is turned on a vehicle with a small capacity engine.
>>
>> Any ideas where to start looking? I noticed that the radiator fan is
>> always running (even at cold idle). I'm not sure if that should be the
>> case or if this is somehow related to the lack of power.
>>
>> Thanks in advance for any help
>> Keith
>>
>>
>>
>>

>
>




Spdloader 01-04-2006 06:56 PM

Re: 97 Wrangler loss of power
 
Sometimes the catalytic converter can start going bad and take out the O2
sensor. It is recommended to replace the O2 when replacing a cat. Your
converter may have been going bad last year when you replaced the sensor,
and it took until now for it to cause the loss of power symptom.

Again, just speculation, nothing is as good as being there to check in
person.

Good luck,

Spdloader



"Keith Orbell" <quite98@hotmail.com> wrote in message
news:AbqdndlpBIIIwCHeRVn-ow@wideopenwest.com...
> Thanks to everybody for the advice.
>
> The catalytic converter could well be the problem here - the exhaust is
> currently pretty noisy and has been for a while. Furthermore, I replaced
> the upstream O2 sensor last year after it went bad - perhaps this has had
> a delayed impact on the cat.
>
> Thanks again,
> Keith
>
> "Spdloader" <askforit@nospam.triad.rr.com> wrote in message
> news:ihbuf.7789$pk4.317@tornado.southeast.rr.com.. .
>> Did you or do you have a noisy exhaust? Sometimes a problem with the
>> catalytic converter will result in loss of power. If the substrate in the
>> converter breaks up, it will sometimes be noisy before it starts to "plug
>> up" the exhaust.
>>
>> Spdloader
>>
>>
>>
>> "Keith Orbell" <quite98@hotmail.com> wrote in message
>> news:sImdnXUMZO5ioyTeRVn-pw@wideopenwest.com...
>>>I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
>>>clock.
>>>
>>> About a week ago the Jeep started to suffer from a lack of power: it
>>> will run and idle fine, but when moving up to freeway speeds (>50mph) it
>>> feels like it is struggling. There is no obvious misfire or hesitation
>>> in the engine - it just feels weaker than normal . Actually it's a
>>> little like when the A/C is turned on a vehicle with a small capacity
>>> engine.
>>>
>>> Any ideas where to start looking? I noticed that the radiator fan is
>>> always running (even at cold idle). I'm not sure if that should be the
>>> case or if this is somehow related to the lack of power.
>>>
>>> Thanks in advance for any help
>>> Keith
>>>
>>>
>>>
>>>

>>
>>

>
>




Spdloader 01-04-2006 06:56 PM

Re: 97 Wrangler loss of power
 
Sometimes the catalytic converter can start going bad and take out the O2
sensor. It is recommended to replace the O2 when replacing a cat. Your
converter may have been going bad last year when you replaced the sensor,
and it took until now for it to cause the loss of power symptom.

Again, just speculation, nothing is as good as being there to check in
person.

Good luck,

Spdloader



"Keith Orbell" <quite98@hotmail.com> wrote in message
news:AbqdndlpBIIIwCHeRVn-ow@wideopenwest.com...
> Thanks to everybody for the advice.
>
> The catalytic converter could well be the problem here - the exhaust is
> currently pretty noisy and has been for a while. Furthermore, I replaced
> the upstream O2 sensor last year after it went bad - perhaps this has had
> a delayed impact on the cat.
>
> Thanks again,
> Keith
>
> "Spdloader" <askforit@nospam.triad.rr.com> wrote in message
> news:ihbuf.7789$pk4.317@tornado.southeast.rr.com.. .
>> Did you or do you have a noisy exhaust? Sometimes a problem with the
>> catalytic converter will result in loss of power. If the substrate in the
>> converter breaks up, it will sometimes be noisy before it starts to "plug
>> up" the exhaust.
>>
>> Spdloader
>>
>>
>>
>> "Keith Orbell" <quite98@hotmail.com> wrote in message
>> news:sImdnXUMZO5ioyTeRVn-pw@wideopenwest.com...
>>>I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
>>>clock.
>>>
>>> About a week ago the Jeep started to suffer from a lack of power: it
>>> will run and idle fine, but when moving up to freeway speeds (>50mph) it
>>> feels like it is struggling. There is no obvious misfire or hesitation
>>> in the engine - it just feels weaker than normal . Actually it's a
>>> little like when the A/C is turned on a vehicle with a small capacity
>>> engine.
>>>
>>> Any ideas where to start looking? I noticed that the radiator fan is
>>> always running (even at cold idle). I'm not sure if that should be the
>>> case or if this is somehow related to the lack of power.
>>>
>>> Thanks in advance for any help
>>> Keith
>>>
>>>
>>>
>>>

>>
>>

>
>




Spdloader 01-04-2006 06:56 PM

Re: 97 Wrangler loss of power
 
Sometimes the catalytic converter can start going bad and take out the O2
sensor. It is recommended to replace the O2 when replacing a cat. Your
converter may have been going bad last year when you replaced the sensor,
and it took until now for it to cause the loss of power symptom.

Again, just speculation, nothing is as good as being there to check in
person.

Good luck,

Spdloader



"Keith Orbell" <quite98@hotmail.com> wrote in message
news:AbqdndlpBIIIwCHeRVn-ow@wideopenwest.com...
> Thanks to everybody for the advice.
>
> The catalytic converter could well be the problem here - the exhaust is
> currently pretty noisy and has been for a while. Furthermore, I replaced
> the upstream O2 sensor last year after it went bad - perhaps this has had
> a delayed impact on the cat.
>
> Thanks again,
> Keith
>
> "Spdloader" <askforit@nospam.triad.rr.com> wrote in message
> news:ihbuf.7789$pk4.317@tornado.southeast.rr.com.. .
>> Did you or do you have a noisy exhaust? Sometimes a problem with the
>> catalytic converter will result in loss of power. If the substrate in the
>> converter breaks up, it will sometimes be noisy before it starts to "plug
>> up" the exhaust.
>>
>> Spdloader
>>
>>
>>
>> "Keith Orbell" <quite98@hotmail.com> wrote in message
>> news:sImdnXUMZO5ioyTeRVn-pw@wideopenwest.com...
>>>I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the
>>>clock.
>>>
>>> About a week ago the Jeep started to suffer from a lack of power: it
>>> will run and idle fine, but when moving up to freeway speeds (>50mph) it
>>> feels like it is struggling. There is no obvious misfire or hesitation
>>> in the engine - it just feels weaker than normal . Actually it's a
>>> little like when the A/C is turned on a vehicle with a small capacity
>>> engine.
>>>
>>> Any ideas where to start looking? I noticed that the radiator fan is
>>> always running (even at cold idle). I'm not sure if that should be the
>>> case or if this is somehow related to the lack of power.
>>>
>>> Thanks in advance for any help
>>> Keith
>>>
>>>
>>>
>>>

>>
>>

>
>





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