engine missing
#1
engine missing
Hi, my 2010 Impala has a persistent problem. there is a "bump" as if the engine is missing. At idle, when it happens, the RPM's drop about 50. Again, it could go a week with nothing. In the beginning, it was when the car was under higher torque.
I had the throttle body fully cleaned but no change.
Any ideas?
Thanks
russell
I had the throttle body fully cleaned but no change.
Any ideas?
Thanks
russell
#2
CF Senior Member
Hi Russell, welcome to the forum. have you had your car scanned to see if there are any error codes? Any trouble lights/codes on the instrument panel?
#4
CF Senior Member
When I was getting a miss on my 2001 Impala, I had a couple things gong on. I replaced the plugs and wires first thing. The miss continued randomly but only when warm. The ignition module found beneath the coil packs was the culprit, but I was also getting misfile trouble codes for 2 cylinders. My 2002 Tahoe had a misfire that appeared only under heavy acceleration or load and be accompanied by a misfire trouble code for cylinder 4. A replacement fuel injector took care of that one.