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1990 Ford Ranger S 4.0L Surge, Misfire
Posted to Ford Driveability on 5/14/1999

truck has plenty of power and idle quality is good. Accelerates fine, however at 55-60 mph at steady cruise when od locks truck misfires and surges badly. Any help would be app.

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car Vehicle Data

1990 Ford Ranger S

VIN 1FTCR10X7L
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / sefi
Emissionsus fed
SymptomsSurge, Misfire
OccursAlways, Cruise
Misc.Cal Code 0-58F-Roo
Message Closed

car Vehicle Data

1990 Ford Ranger S

VIN 1FTCR10X7L
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / sefi
Emissionsus fed
SymptomsSurge, Misfire
OccursAlways, Cruise
Misc.Cal Code 0-58F-Roo