Michael Roberts

ok guys I have ask so many people but no one can help me out I just had my motor rebuilt and got it all back in the car but now it will not fire and I put everything back new but the computer it ran before but now it will not hit a lick new opti new I my new coil new plugs and wires new everything lol what should I check or where should I start o and I have power to my injectors but that don't have full coming out of them

Michael Roberts

But the car will not fire and it has a new Icm

Michael Roberts

What's the odds of the computer going out just setting

Injuneer

Have you scanned it for codes? Have you checked the fuel pressure?

Michael Roberts

Just put in a new fuel pump and I checked the power going to the coil and opti I have power to the coil and I have power to one wire on the opti now I don't know what wires should have power or anything like that but I did check to see if any f them had power and that had 12.34v on them and it's grounded good

Injuneer

There are codes for faults in the ICM and Opti. The ones for the Opti don't turn on the SES light. There is a procedure for checking the signal from the PCM to the ICM. See the "sticky" on top of the "LT1 Based Engine Tech" forum, or shbox.com. That's important because that signal originates from the Opti.