Questions & Answers for: GMC what is a misfire

2000 gmc Jimmy misfiring runs good up to about 3000 RPM then starts to misfire put new cap, roter, plugs but still does it also when the motor get warm it starts to misfire around 2000 to 2500 RPMs ...

...does that mean?could it b an o2 sensor or a valve?if so how can i test it. P0303 is a misfire on cylinder 3. Misfire on cylinder number three. Did you change this plug. It is hard to

Misfire on cyclinder I have a misfire on cyclinder 2. Gap, rotor, wires. and plugs have been changed. Sounds like misfire is inside cap. Had 3 different caps on.Has throttle body carb. I would check ...

...rough and misses when at cruising speed,although it seems ok when accelerating. Any ideas? Misfire is a common driveability problem that may or may not be easy to diagnose, depending on the ...

misfiring The service light is blinking. The truck is misfiring Yes the blinking light indicates a misfire is occuring. You will need to have it "scanned" the code(s) will indicate which cylinder(s) ...

2000 GMC Sierra w/4.3 misfire on #2,4 cylinders I had to replace the fuel pump 3 months ago, about a month later the service light came on. I knew I was overdue for a tune up so I replaced plugs cap ...

truck misfiring and surging. not shifting properly The shift problem is a result of the misfire. Correct the misfire and you will correct what seems to be a transmission issue.

...your engine is misfiring according to your codes ...4 codes 4 problems P0300 - Random Cylinder Misfire DetectedP0301 - Cylinder 1 Misfire DetectedP0302 - P0312 Cylinder X Misfire DetectedP0325 - ...

engine misfire and transmission sluggish Was told that #1 engine cylinder has over 40000 misfires....transmission feels sluggish when speeds are between 50 and 60 mph... I can shift the transmission ...

p 0300 multiple misfire delected gmc 2007 it could be bad spark plugs, plug caps/wires, coil, fuel injector.. you will have to find out what is causing the misfire and repair. this code tells you that