I just installed a new ISKY cam shaft and all new lifters in this 454.
After this was done the check engine light came on . The read out says its
"on board computer controlled ignition /missfire" ? The cam is a high
performance cam but was told that no other mods were needed for this cam
application.I also replaced the cap,roter and plugs.
I did fail to replace the spark plug wires though? DUH.. And the were
pretty dry and cracking.
Any sugestions before i take it to the dealer would be helpfull..
Other then the light on it seems to be runningv fine. THANKS BOB...
Will the reader at the auto zone get the codes i need, because that is
what i did when it said"on board computer controlled ingnition/missfire" .
I thought that was what they read on the devise they pluged in under the
dash? Should i go back and do it again and ask for the codes? THANKS
Makes sense now Here's a few things to check:
Loose or missing distributor hold down bolt
Loose CMP sensor caseing a variance in the sensor signal
Incorrectly installed distributor, possibly one tooth off in either
Loose distributor rotor.
Excessive freeplay in timing chain and gear assembly.
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