I have a friend that has a 06 Colbalt SS that is stock.He's been trying to get it going for a while now.It started to run pig rich when he started it one morning .From what I'm told,it's not showing any trouble codes,changed a bunch of sensors(i can find out which ones).
And when it's starts,he lets it idle for a minute or so,he has to keep his foot on the gas pedal .the exhaust manifold starts glowing......He also recently changed the manifold to a header and a aftermarket cat(only mod.that he did). Same results.I haven't had a chance to check it out up close.Anyway he's thinking it may be the ECM that is fried,but I downloaded the ECM file with no issues,and can read it no problem.I'll check it out with my scanner and also log with HP to see if I see something weird.
Anybody seen this before,any suggestions ?
Thanks in advance.