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1989 Mercury Grand Marquis GS 5.0L Hesitation, Cuts out, Stall, Misfire
Posted to Ford Driveability on 1/6/2007 27 Replies

This car at times will stummble,hesitate and run poorly. I checked fuel pressure,it has 31 psi at idle when at proper running temps and has 40 psi with vac unplugged from regulator. I can get a quart of fuel in less 20 seconds. My questions is, What pressure s...

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car Vehicle Data

1989 Mercury Grand Marquis GS

VIN 2MEBM74F5K
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / sefi
Emissionsus fed emmissions
SymptomsHesitation, Cuts Out, Stall, Misfire
OccursUnder Load, on Accel, Turning, Idle
Misc.Sedan
Message Closed w/FIX

car Vehicle Data

1989 Mercury Grand Marquis GS

VIN 2MEBM74F5K
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / sefi
Emissionsus fed emmissions
SymptomsHesitation, Cuts Out, Stall, Misfire
OccursUnder Load, on Accel, Turning, Idle
Misc.Sedan