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1990 Ford F-250 Custom 5.8L Poor Idle Quality, Surge
Posted to Ford Driveability on 3/10/1999

Recently rebuilt Engine. Problem seemed to start after engine overhaul. At engine overhaul, an RV cam was installed. The main problem is that the 02 voltage will cycle normally for 10 to 15 seconds when you come down to idle and then it will indicate an ex...

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Message Closed w/FIX

car Vehicle Data

1990 Ford F-250 Custom

VIN 2FTHF25H8L
Engine5.8 L / 8 cyl / GAS
Trans5-speed Standard
DeliveryFI / EFI
EmissionsCalifornia
SymptomsPoor Idle Quality, Surge
OccursIdle
Misc.2 Wheel Drive

Trouble Codes

12KOER Idle RPM problem
44KOER Thermactor problem
Message Closed w/FIX

car Vehicle Data

1990 Ford F-250 Custom

VIN 2FTHF25H8L
Engine5.8 L / 8 cyl / GAS
Trans5-speed Standard
DeliveryFI / EFI
EmissionsCalifornia
SymptomsPoor Idle Quality, Surge
OccursIdle
Misc.2 Wheel Drive

Trouble Codes

12KOER Idle RPM problem
44KOER Thermactor problem