I have an '84 Z-28 that I bought about five months ago. I just replaced the L69 with a new Marshall Magnum motor and it runs great. But I do have a problem with the Check Enginge Light. It will turn on after I decelerate from 38 mph or above, then it will turn off in about 7 or 8 seconds. Anyone know what the problem night be here?
I bought an 84 z and have a similiar problem, my check engine light stays on. When I ground out the computer it doesn't blink or give mew any trouble codes. I also tried to reset it by disconnecting at the batterie. It suppsebly emmits more than 2000 hydrocarbons on smog test.