check the ignition coil to make sure your getting a good spark i feel bad for you but it seems a few things they are replacing are expensive and i would think they should have tried the cheaper things first.... if your fuel is fine then your problem must be electrical so i would try replacing the distributor cap and rotor which are cheap then if that dosent help replace the coil which is inexpensive also......im assuming the check engine light isnt coming on either and they havent pulled any codes from it......let us know good luck :)

Answered by syncrait
16 questions asked

If it's a misfire issue it should put up a check engine light.
Otherwise could be an idle air control valve, or just the injectors are a little clogged.

Answered by demearsjr
0 questions asked

The 4.0 motors are common to have intake valves get carboned up and allowing leaks. Find an independent garage to perform a professional fuel injection service or contact a castle chemical rep to buy rail power fuel injector cleaner and the equipment to use it; and run a couple of cans through it. After running it through, take it up to 4000 rpm in a lower gear for about 15 seconds to help break up the carbon.

Answered by Service Writer (expert)
9,919 answers provided

Thank all of you so much for your suggestions. The ignition coil has been replaced with no change in symptoms. I am going to try some of the ideas that have been made and hopefully one of them will work. Because I'm running out of cash. but don't want to give up my car. Again i thank all of you

Response from dgirl
1 question asked