need help F250
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Junior Member
Joined: Sep 1999
Posts: 1
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From: valenzuela, metro manila, philippines
need help F250
I have a 1992 F250 6 cylinder fule injection. When the engine reaches normal operating temperature, the RPM starts to rise and flactuate. Would you happen to know possible cause and any recommendation. By the way I lost my owner's manual which makes it the more difficult. ANY help please. Thank you