Join Date: Jun 2007
Location: Huntsville/Arab alabama
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603 is not a problem, it simply means the computer has been reflashed or lost power, nothing to worry about. Agree with above post, if wait to start light no come on them good chance the computer is unhappy. If it does come on then see if the tach moves any while cranking, if not it may be a bad cam sensor and they do not always throw trouble codes. Also check the HPOP reservoir and make sure it is near full of engine oil.
Why did you put a "gas" pump on it, was the original fuel pump not building pressure? Is the new electric fuel pump building at least 50 psi?
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Last edited by alabamafrog; 10-22-2007 at 12:12 PM.