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Re: Ford O2 voltage leak (one for the books)
Posted to Technical Tips Forum on 12/30/2004 8 Replies

koeo fuel pres should be 38-40 psi. koer should be 29-32. these are normal readings for all ford return systems except the 4.9l which is 55 psi. i don't care what the book says(8 years in ford dealers(ford smt)). what kind of volume?

what altitude are you at... Login to read more.

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