Question about 1991 Jeep Wrangler

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1991 jeep wrangler, 2.5, manual. hesitates, and occasionaly misfi

It will sometimes stall, then restartes after sitting a few minutes. but until cooled it will not start

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  • Anonymous Mar 15, 2014

    when I press the accelerator on the car, it feels like there is a miss. No acceleration. Sometimes the car will stall, sometimes will start immediately, sometimes needs to sit for a few minutes. Car will eventually restart, but hesitation continues

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  • 166 Answers

So, when the engine is hot, it won't work. Do you have any idea what the ambient temperature is?
The causes might be 1) vapor lock; 2) percolation; or 3) PCV malfunctioning. This is all explained in a brief diagnostic article at
http://yourhandymanzone.com/Your_Handyman_Zone_How_To_Pages_Vehicle_Car_Zone_Cars_Trucks_Vans_Engine_System_Engine_Stalls_When_Hot.htm

Posted on May 25, 2009

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Posted on Jan 02, 2017

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Hard starting when cold ( engine cranks normally )


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1994 Jeep Wrangler starts fine runs for a few minutes then dies.


I'm not sure if your Jeep has this or not, but you could check with your local Chrysler dealership. Some vehicles have a sock filter in the gas tank to filter any debris before it is delivered to the engine. What sometimes will happen is, you vehicle will start and run until debris clogs the sock filter and it will die. After the vacuum on the fuel line is gone the debris will fall free from the sock filter back to the bottom of the gas tank. Then when you restart the vehicle it picks up the debris again and clogs you filter again. This happen to me once and I have to remove the tank and clean the debris out and install a new sock filter. Good luck.

Jun 23, 2009 | 1994 Jeep Wrangler

1 Answer

Jeep stalls


try doing the procedure below, should cure the problem.
Here is the common cause of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

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I have a 1991 jeep wrangler with a new fuel pump and relay.


Check spark and fuel pressure. One is failing and must determine which to proceed further.

Apr 03, 2009 | 1991 Jeep Wrangler

1 Answer

My car stalls


Check fuel filter . You have a mechanical pump & a carburetor on that model dont you?...Check fuel pressure (should be around 6-7 lbs) and check coil immediately after it shuts down...sometimes coils will act like that just before they go bad..

Mar 14, 2009 | 1991 Jeep Wrangler

1 Answer

1994 jeep wrangler fuel injected. when jeeps stops, it cuts off


could be the cap and rotor or the pick up in the distributor

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