Cyl. 2 missfire

Asked by Bruce Apr 22, 2019 at 10:09 PM about the 2000 GMC Sonoma SLS Ext Cab Short Bed 2WD

Question type: Maintenance & Repair

I have replaced coils wires plugs and injector and
still have a miss all started after I gutted the cat
what next plug is wet from fuel but I have spark u
think maybe control module or fuel pump maybe
help o and it's a 2.2 flex fuel

2 Answers

Gutting the cat. Big mistake. The O2 sensors are now sending the wrong information to the engine computer.

I installed the spark plug foulers so it's not growing a light for the o2 but ran fine for a few hours after I did that and then all the sudden it started missing I got the control module off gonna get it tested tom but u think that I need to put a car back on it cause it's causing the miss i have done this before to the same motor in dirffwrent truck with no problems

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