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1998 Mercury Grand Marquis GS 4.6L Poor Idle Quality, Surge
Posted to Ford Driveability on 2/16/2013 20 Replies

Looking for some input on this 98 Grand Marquis. The condition experienced is a rough idle and surge on cold start. The colder it is the more noticable the condition. Fuel pressure is good. No codes set. Fuel trims show high when cold but drop to normal when e...

20 Replies Received (View Replies)

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car Vehicle Data

1998 Mercury Grand Marquis GS

VIN 2MEFM74W2W
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Surge
OccursCold
Message Closed w/FIX

car Vehicle Data

1998 Mercury Grand Marquis GS

VIN 2MEFM74W2W
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Surge
OccursCold