Question about 1996 GMC Jimmy

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1996 jimmy continually replace distributer cap and rotor

Engine constantly idols rough, Eventually will not start, hot or cold. I constantly have to replace lifetime distribution caps and rotor, they only last about 6 months, What is wrong?

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The symptoms sound like you actual distributor is bad. It may have a bad or worn bearing, or possibly a cracked or broken shaft. I would replace the distributor itself.

Posted on Jun 22, 2009

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  • Master
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Look into the throttle body intake.
remove the tubing to the throttle body at there at the butterfly plate.
thats the plate that opens and close with the gas pedal.
look there and see if there is a lot of black carbon buildup right at the bottom of the throttle plate.use a good brand carb cleaner and spray it in there a little bit. use a very clean rag and wip it clean.
everything in there should be very nive and clean.the carbon will tend to buildup at the idle position and cause the engine to die at an idle and run rough.make sure everything is done nice and clean and do not get any any any trash in the tbi intake system.
using super unleaded will prevent this from being a problem again ever.
hope this helps

thank you
jm

Posted on Jun 22, 2009

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Hello,
The choke on your vehicle is a computer controled fuel system. It is usually a fuel pump but sometimes a Distributor cap and rotor problem. I would first check the distributor cap and rotor. Look for white corrosion in the cap and in the bottom of the distributor. If you see the corrosion in the bottom of the distributor clean it out with brake cleaner.The Coil wire some times fails causing a hard start situation. I suggest checking these things before doing any thing with the fuel pump. I would also replace the fuel filter and spark plugs if you do end up replacing the cap and rotor.

I hope this helps.

Roy

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Than you problem solved by yourself already,

Dear you had done good job for your dream,

just some modification nedds like,

CHECK YOU ENGINE MOUNTINGS,OR THIGHTEN IT,
YOU HAVE TO ALSO CHECK YOUR PLACEMENTS ORDERS OF YOUR ENGINE THAT NOT TO BE CHENGED AFTER YOUT TRY.

THNX

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