I did a motor swap in my 2000 Chevy silveradio and the motor seems to backfiring at idle. I replaced and cleaned the MAF. What could be causing the little backfires? does the computer have to reset?

Asked by Jan 13, 2017 at 03:30 PM about the 2000 Chevrolet Silverado 1500 LS Extended Cab LB 4WD

Question type: Maintenance & Repair

2 Answers

85,465

No something is slightly out of adjustment. Is there a check engine light on? One thing that causes this is the EGR Valve. And have the valves ben adjusted or touched? Also clean the throttle body.

115,465

Backfire sounds like an ignition timing problem,

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