Hi...i have a 87 3/4 ton chevy van with stock 350 fuel injected...air just like a van conversion. The problem is that i recently change the radiator as the old one was leaking.
However since the change the idle on a cold start...races or runs too high in rpms.
Nothing was done except to change the old radiator and even with the slow leak i had no idle problems.
Have to smog the truck this month...so any suggestions as to what is causing the idle to run so fast is appreciated. Note that after the engine is warmed up the idle slows down to normal operating speed.
The radiator is a heavy duty three core or row one that i got from Napa auto store.
Thanks Starrider
