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1991 Ford Ranger Custom 4.0L Detonation
Posted to Ford Driveability on 2/2/2001

Hello all! this ranger I am dealing with has a bad detonation problem, with the engine warm to hot, this detonation occurs under any moderate to heavy load. This vehicle has no e.g.r. and the octane bar is removed, the owner states that with the octane bar in ...

  Related Documents & Media  1991 Ford Ranger Custom

 
Message Closed w/FIX

car Vehicle Data

1991 Ford Ranger Custom

VIN 1FTCR14X6M
Engine4.0 L / 6 cyl / GAS
Trans5-speed Standard
DeliveryFI / SEFI
EmissionsUS FED.
SymptomsDetonation
OccursHot, on Accel, Cruise

Trouble Codes

66mass air flow ckt. low
Message Closed w/FIX

car Vehicle Data

1991 Ford Ranger Custom

VIN 1FTCR14X6M
Engine4.0 L / 6 cyl / GAS
Trans5-speed Standard
DeliveryFI / SEFI
EmissionsUS FED.
SymptomsDetonation
OccursHot, on Accel, Cruise

Trouble Codes

66mass air flow ckt. low