Mechanics

MISFIRE

2003 Dodge Caravan

Engine Performance problem
2003 Dodge Caravan 6 cyl Front Wheel Drive Automatic 90400 miles

I have a KOER P0302 misfire code. Did not happen until I had plugs and wires replaced (bad move). New coil pack also replaced. Injectors cleaned when plugs and wires replaced. Mechanic can find nothing to cause misfire. Takes about 1 week for Check Engine light to come on after being reset.
Avatar
Golfguy54
July 27, 2010.




Hi golfguy54, Welcome to 2carpros and TY for the donation

Cyl no.2 misfire-check the sparkplug/compression and injector for this cylinder-then report back-try erasing the code again

Tiny
Rasmataz
Jul 27, 2010.
I have not had a chance to do a compression check but what I did notice that makes no sense is that when A/C is on the misfre/stumble at idle disappears.

I was also going to switch the plug with another one and try another wire on that cylinder to see if it makes any difference.
AD

Tiny
Golfguy54
Jul 29, 2010.

AD