1990 f150 5.0 maual 4by4
3 Answers
My first suspect would be the fuel pressure regulator. Remove the vacuum hose from it. If there's gasoline in the hose, the fuel pressure regulator is bad. Hope that helps! Jim
Ive replaced both yhe fuel pressure reg and o2 its giving me codes 21 23 24 85 and 112 the 20s are tps out of range and vat out of range and something else im not to sure what yhats telling me the out of range deal
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