what gives? SES light blinking
#1
what gives? SES light blinking
So I am driving to Kansas City and my SES light is blinking, tripping code P0300: Random/Multiple cylinder misfires...but the car is running perfect. Just changed plugs, wires are fine, new opti, just put in a lt4 hot cam and 1.6 rr's and i have lt headers with true duals...has not been tuned for the cam. Could this be false knock or what? It doesnt bother me since it doesn't seem to affect performance but its just really annoying, and it might even be flipping the fans on and retarding the timing if its putting the engine into limp home mode lol.
Any advice?
Thanks in advance
Any advice?
Thanks in advance
#2
TECH Regular
Join Date: Mar 2009
Location: Ricerville
Posts: 420
Likes: 0
Received 0 Likes
on
0 Posts
From what I have heard, a new cam sometimes throws false misfire codes. I think some people have to raise their misfire detection thresholds in the computer to compensate for a new cam.
#3
Banned
iTrader: (2)
Make sure none of the spark plug wires are touching or able to bang/rub against the metal exhaust pipe manifolds while your driving. They can give you misfires and SES lights flashing and you really might not feel anything at all. Its pretty subtle sometimes.
If you hit a bump in the road and a wire bangs against a manifold it'll arc and make it misfire slightly.
.
If you hit a bump in the road and a wire bangs against a manifold it'll arc and make it misfire slightly.
.
#4
looked over every wire, no burn marks and no arcing present, i think its just computer stuff...so a tune can change the knock thresholds for the pcm and i wont need to buy the knock module?