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1995 Mercury Grand Marquis LS 4.6L Misfire
Posted to Ford Driveability on 9/18/2007 13 Replies

Greetings! Could use some direction on this one. Swapped coils, plugs, ignition wires, fuel injectors - no change. Unlike most ignition misfires, it seems worst under light throttle. No matter what I change, still cylinders 4 and 7. Have not pulled cam covers ...

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  Related Documents & Media  1995 Mercury Grand Marquis LS

 
Message Closed w/FIX

car Vehicle Data

1995 Mercury Grand Marquis LS

VIN 2MELM75WXS
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire
OccursUnder Light Throttle

Trouble Codes

P0304Cylinder 4 Misfire Detected
P0307Cylinder 7 Misfire Detected
Message Closed w/FIX

car Vehicle Data

1995 Mercury Grand Marquis LS

VIN 2MELM75WXS
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire
OccursUnder Light Throttle

Trouble Codes

P0304Cylinder 4 Misfire Detected
P0307Cylinder 7 Misfire Detected