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Backfire through tbi & exaust

   
Old Jan 31, 2014 | 12:15 PM
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woody56
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Default Backfire through tbi & exaust
I have a 94 5.7 tbi 1/2 ton Silverado.It runs fine for 6 or 7 miles then it will start missing & backfireing through the carb & die.It will start & run as long as you don't give it a lot of gas.Can anyone point me to what might be wrong? I would be really thankful.
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Old Feb 1, 2014 | 1:30 PM
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Richardx2
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From: Bloomfield MO
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It sounds like you have either a timing issue or a sensor issue. If the timing is correct the throttle positioning sensor might not be sending the ECM the correct information.
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