Can't Get Enough
Join Date: Dec 2002
Thanked 2 Times in 2 Posts
Re: high mileage 350
Is the check engine light coming on? If so, the computer has some trouble codes stored you need to check out.
I would say check all of the obvious stuff first. Fuel filter, spark plugs/wires, etc. If its TBI, I would also pull the injectors out and look at them. There is a small filter on each injector that sometimes gets clogged up.
If it won't idle at low rpm, it could also be the EGR valve. If it stays open, it will let too much exhaust gas into the intake manifold.