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  1. #1

    Default 97 K1500 5.7 possible weak ignition coil ?

    My 97 burb has 258K miles and has a stumbling problem as I accelerate and at cruising speed. I have changed the fuel filter and replaced the pump 3 yrs ago (don't hear the wine) but I have not checked fuel pressure yet and there are no codes. I had this same problem about a year ago and replaced the fuel filter and it ran like a new truck but not this time. Someone told me that a weak coil could cause this. Are there any other possible causes?

  2. #2

    Default

    Have you ever serviced your fuel injectors. (Cleaned the system)
    Please Tell Your Boobs To Quit Staring At My Eyes

  3. #3

    Default

    What about plugs/wires/cap/button? You can get a spark tester at AdReilly Zone for around 5 bux. It is a great tool to have in the box. You should be able to run with about 3/4 of an inch of gap in the tool. Don't get the one that has a light bulb inside.
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  4. #4

    Default

    Will it do it in Drive with foot on brake or do you need to be motoring down the road? Have you gotten a squirt bottle and hit wires and cap, at night is best, and looked for arcing wires etc >>> ?

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