Help! Easy for you.
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New User
Joined: Aug 2000
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Help! Easy for you.
My 1990 F250 truck stalls when coming to stop, but only when the AC is on. The idel slows and the oil pressure drops then the engine dies. What problems with the engine should I check for first for a possible solution? Details; 1990 Ford F250, 4-speed(man), 5.0 EFI
Elder User
Joined: Jan 2000
Posts: 656
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From: Gravel Switch, KY
Help! Easy for you.
The computer is supposed to compensate for the AC load by manipulating the Idle Air Bypass valve. This valve may be sticking or need cleaning or replacing. I had the same problem to a certain extent with my EFI 300, but when I went to the 351W, it doesn't care if the AC is on or not, it idles right on!!!
DannyP
89 F-150 4x4 former EFI I-6 now carbed 351W, Edelbrock heads,cam,intake,carb.
MSD 6A, T-18 but looking for a ZF. 3.55's.
DannyP
89 F-150 4x4 former EFI I-6 now carbed 351W, Edelbrock heads,cam,intake,carb.
MSD 6A, T-18 but looking for a ZF. 3.55's.
