Question about 1989 Jeep Cherokee

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88 jeep cherokee hesitates dureing acceleration

I have changed the fuel pump & filter but it still hesitates it also seems to be idled high like the timeing is off but this model has nonadjustable timeing, ANY SUGGESTIONS

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  • Sgt Why Feb 19, 2009

    Same problem here. Hesitates while accelerating under load ... like up a hill or passing, but never going down hill. Recently replaced the fuel pump and was better starting now but hesitation returned about 2 weeks later.

    Not sure what next to replace ... so far have done the following;
    spark plugs, cap & rotor, plug wires, fuel filter, fuel pump, air filter, oil filter

    And this is a 5 speed manual ... 4.0L High Output motor, 1992 cherokee

  • Burr Vaughn Mar 02, 2009

    I have a jeep cherokee laredo 4x4 and when you are going down the road and go to increase speed to shift to next gear it spits and sputters. After running it for awhile and then i shut it off it wont hardly start back up. HELP!!!!!!!!

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Clean or replace the crank sensor on the back of the engine that runs off the flywheel

Posted on Nov 13, 2009

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Its the egr valv

Posted on Apr 17, 2013

  • douglas frech Apr 17, 2013

    check aii

  • douglas frech Apr 17, 2013

    check all air lines cracks to

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Check your IAC

Posted on Nov 11, 2008

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Do the 90 have a iac

Posted on Jan 31, 2009

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I've got a 1996 jeep grand Cherokee with the 5.2 v8 fuel injected Holley throttle body. My problem is while driving at soft or low acceleration it accelerates fine, but if you hit the throttle hard it


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Does the car always hesitate during acceleration? If it ALWAYS struggles when it starts or ALWAYS hesitates on acceleration then I would say the issue is fuel delivery. If the problems are more intermittent and come-and-go then it could be an electrical issue.

I would start by changing the fuel filter. Changing plugs, wires, cap, and rotor are all good things to do as your budget will allow. I doubt you will have to change your injectors.

If you end up replacing any rubber fuel line, be sure to use the high-pressure stuff made for use on fuel injected cars.

I hope this helps! -Nick

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