Question about 1995 Chevrolet Tahoe

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Runs rough and vibrates when idling

After the tuneup on my 95 Tahoe, my car runs rougher and it vibrates a lot when it's idling. Bosch Platinum 2+ plugs, Nascar wire set, cap, rotor, oil, oil filter, and air filter were all placed in my car.

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  • TREMELE80 Jan 26, 2009

    AT 35 MPH MY TRUCK MAKES A LOUD TAPPING NOISE BUT ONLY WHEN IM ON THE GAS WHEN I GET OFF THE GAS IT DOES NOT MAKE THE LOUD TAPPING SCREECHING NOISE WHAT IS IT

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Make sure the firing order is ok, that means every plug wire belongs to a specific spark plug and can't be swap to another
if the do not help then reinstall the old distribuitor cap and see if that cures the problem i have seen some aftermarket caps arking internally
also doble check spark plug for loose and retie

Posted on Jun 10, 2008

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I have a 99 ford f150. Sometimes it runs perfect, then out of no where when I try to accelerate it vibrates bad and becomea hesitant. When I came to a stop I switched threw all gears and it seems like it...


This sounds like you might have a bad plug wire or something else in the ignition system is arcing to ground. A quick way to verify this is to run the truck in Park at idle. Next, spray the ignition wires with Windex. You'll notice the truck starting to rough up and might even see the bad wire arcing to ground. A complete tuneup would be recommended in this case.
I hope this helps! :)

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