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1999 Lincoln Navigator 5.4L Misfire
Posted to Ford Driveability on 5/2/2007 16 Replies

Problems started after plugs were [...] misfires at idle and just above but not under [...] not misfire enough to set a code [...] these plugs cause the misfire due to reduced gap per AC delco spec's?

16 Replies Received (View Replies)

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car Vehicle Data

1999 Lincoln Navigator

VIN 5LMPU28A4X
Engine5.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsMisfire
OccursIdle, 700-800Rpm
Message Closed w/FIX

car Vehicle Data

1999 Lincoln Navigator

VIN 5LMPU28A4X
Engine5.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsMisfire
OccursIdle, 700-800Rpm