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Thread: P0300 misfire detected need help
11-20-2009, 03:02 PM #1
- Join Date
- Nov 2009
P0300 misfire detected need help
I have a 2001 sierra ext-cab. It only does this when it is cold.
During the summer and after it warms up it runs great.but when the engine is cold
it runs rough and misfires and sometimes it dies.i think it is the iad sensor thats part of the maf sensor.. Am i right???
11-20-2009, 03:25 PM #2
could be Bad Plug or Wire,02 Senor,Faulty Coil pack,Faulty Fuel Injector.I would take a look at the wire's 1st and go from there.
5.3 l 3.73 l G80
BLACK BEAR CUSTOM TUNE
SNUGTOP l COLORMATCH l KATZKIN
11-20-2009, 08:58 PM #3
Try cleaning your MAF and your throttle body... That's a simple, quick, and most of all cheap possible fix...
Tim a.k.a. Da' Boulder
2003 Chevrolet Avalanche Z71 - Custom Emergency Response POV
Firefighter, Fire Policeman, Ambulance Driver, Rescue Tech, Emergency Lighting Installer
Tint, 20's, Bull Bar, Intake, Exhaust, Billet Grill, Stereo, Custom Console, Emergency Equipment, and the list goes on...
11-21-2009, 12:53 AM #4
Wife's girlfriend just had that problem. Wire on number two was bad. Replaced wires, and plugs since it was due for a tune up. Then had to go back and have the coil pack replaced.There is no way to happiness....happiness is the way.:yipi:
High Desert SoCal
93 K1500 burb (personal) 350 AT 3" Lift 250K+
02 Honda Civic LX
Looking for a 1990's Miata for an engine swap
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