Engine low power

Tiny
94JEEPCHEROKEESPORT
  • MEMBER
  • 4 POSTS
I checked the wiring harness and I didn't see any naked wires or any that looked corroded.

I was wondering if the coil wire or spark plugs could get hot in that 1 hour and 10 minute time span to make it cutoff and do like it is doing. I checked the plugs condition the other day and they looked fine, but it probably has been longer than the 30,000 miles since I have changed them out. Do you think that could be a culprit?
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Saturday, August 1st, 2020 AT 12:58 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It cold be the coil kind of doubt it but you never know i'd think more like a module more than anything or a fuel pump heating up and not working. So you could check your fuel pressure when this happens and see what yo have if not up to snuff then that may be the problem.
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Saturday, August 1st, 2020 AT 12:58 PM (Merged)
Tiny
94JEEPCHEROKEESPORT
  • MEMBER
  • 4 POSTS
I sold the 1994 Jeep Cherokee Sport from this thread to a friend of mine. Since I sold it to him. I have been seeing him driving it, and he said that it hasn't given him any issues.

Turns out he got a new Fuel Pump for it. I had replaced it on December 21st, 2014 according to my receipt from Auto Zone. I had ruled it out because I really didn't think it would go bad so quickly but it did so I replaced it again runs great.
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+1
Saturday, August 1st, 2020 AT 12:59 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Nice work, we are here to help, please use 2CarPros anytime.
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Saturday, August 1st, 2020 AT 12:59 PM (Merged)
Tiny
MADMILE
  • MEMBER
  • 2 POSTS
  • 1994 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
Driving down the road it feels like the jeep has just run out of gas but yet the motor wil remain running until you put the transmission in neutral. You can press on the gas pedal but the motor will not reve up
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Saturday, August 1st, 2020 AT 12:59 PM (Merged)
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
Ever replace fuel filter?
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Saturday, August 1st, 2020 AT 12:59 PM (Merged)
Tiny
MADMILE
  • MEMBER
  • 2 POSTS
We were hoping it would be as simple as a fuel filter and wanted to try that first but the problem this is our very first jeep we have ever owned and with all the searching we have done today even through the owners manual we can not find one thing on where the fuel filter for the 94 jeep cherokee country is located. To make matters worse the owners manual doesn't even mention a fuel filter. OMG! If you wouldn't mind helping us with this we would love to try it and hope it solves the problem
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Saturday, August 1st, 2020 AT 12:59 PM (Merged)
Tiny
CHULEGAARD
  • MEMBER
  • 35 POSTS
It's not the fuel filter, fuel filter is mechanics way of not wanting to tell you the real reason something is wrong. You need new spark plugs wires distributor cap rotor, maybe coil. Time for what they call a tune up
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Saturday, August 1st, 2020 AT 12:59 PM (Merged)
Tiny
RONNIE LABAUME
  • MEMBER
  • 1 POST
  • 1994 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 98,000 MILES
My jeep has an acceleration problem. It will be running smoothly and then it starts chugging but it clears itself up. I put on a new fuel filter. It acts like it has some sort of vacuum problem. Is there a vacuum system associated whit the throttle linkage? The problem seems to occur more frequently at slower speeds: 10-15 mph. There is no consistent pattern to the problem.
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Saturday, August 1st, 2020 AT 12:59 PM (Merged)
Tiny
ENGINEMAN 73
  • MEMBER
  • 28 POSTS
TRY CHECKING FUEL PRESSURE REGULATOR. PULL VACUUM HOSE AT REGULATOR AND CHECK FOR FUEL. IF THERE IS ANY FUEL THE REGULATOR IS BAD AND WILL NEED TO BE REPLACED.
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Saturday, August 1st, 2020 AT 12:59 PM (Merged)
Tiny
KYLEGIBSON18
  • MEMBER
  • 3 POSTS
  • 1992 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 84,000 MILES
When I start it cold it runs good. But after it gets hot and you shut it off and wait about 10 minutes and start it it stalls if u dont give it gas. If u give it gas it spits and spudders and has no power at all
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Saturday, August 1st, 2020 AT 12:59 PM (Merged)
Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
Rap on the converter, there should be no rattling sounds. IT may be broke up inside.

IF it is solid I would be suspicious of an ignition coil going bad.
Any codes in the computer?
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Saturday, August 1st, 2020 AT 12:59 PM (Merged)
Tiny
DOC S
  • MEMBER
  • 1 POST
  • 1992 JEEP CHEROKEE
  • 4.0L
  • 6 CYL
  • 4WD
  • MANUAL
  • 250,000 MILES
I experience near total loss of power under minimal load. I replaced fuel filter, pump, MAP, throttle position sensor, distributor cap and wires and the ECM, which made it worse. In the beginning, no engine light came on. Now it does and the amp meter goes full right. It was supposed to be pre-programed but I'm not sure it was. I am inclined to think the ECM is configured wrong. Totally frustrated and upset.
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Saturday, August 1st, 2020 AT 12:59 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening,

First, OBD1 has an ECM that is a plug and plat. the module numbers need to be exactly the same.

Do you know the code for the light? If you do not, turn the key on and off three times in a row and leave the key on. the check engine light should start to flash.

Code 12 should be first. one flash, pause, two flashes. the end of code list is 55.

https://www.2carpros.com/articles/engine-has-low-power-output

First thing I check with low power is a compression test. then I will do a catalytic converter back pressure test.

https://www.2carpros.com/articles/how-to-test-engine-compression

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Roy
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Saturday, August 1st, 2020 AT 12:59 PM (Merged)
Tiny
POOCHIE503
  • MEMBER
  • 2 POSTS
  • 1991 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 210,000 MILES
My brothers jeep will start and idle but when I give it gas it wont rev it just idles. I opened the hood to check the cable it was still hooked up I tryed to rev it up from there and it still only idle not rev up why would it do that. If you can help please dothank you
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Saturday, August 1st, 2020 AT 12:59 PM (Merged)
Tiny
ISLAND_PRIDE71
  • MEMBER
  • 62 POSTS
Remove the air intake tube from the throttle body, look @ the throttle plate as you pull the accelerator. Is the throttle plate moving? Let me know.
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Saturday, August 1st, 2020 AT 12:59 PM (Merged)
Tiny
POOCHIE503
  • MEMBER
  • 2 POSTS
It was a cap of an after market intakefilter. Took it out it worked thanks.
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Saturday, August 1st, 2020 AT 12:59 PM (Merged)
Tiny
TODDSSISSY
  • MEMBER
  • 2 POSTS
  • 1990 JEEP CHEROKEE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
It starts, but rpms go down to 200 rpms dont want to go ovr 15-20 mph
changed fuel filter, reset points, new spark plug wires.
Help where is the fuel regulator located?

Thanks
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Saturday, August 1st, 2020 AT 12:59 PM (Merged)
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
What are the points gapped at now? What dwell are you running?
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Saturday, August 1st, 2020 AT 12:59 PM (Merged)
Tiny
TODDSSISSY
  • MEMBER
  • 2 POSTS
Plugs gaped at.35 checked them yestarday.
Dont know what the point is supposed to be gaped at.
Do you?

Thanks
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Saturday, August 1st, 2020 AT 12:59 PM (Merged)

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