1998 moter grand Marquis

Asked by Weasel94 Feb 12, 2017 at 05:46 PM about the 1998 Ford Crown Victoria

Question type: Maintenance & Repair

Why does my moter miss when getting up to temp?
Everything changed on it almost every part is new. Coil
pack tune up. everything. I mind you the moter is now in a
2001 Marquis it was an engine swag done about 5 months
ago. Doesn't miss in idle but misses when up to temp
cannot figure this out. Any advice

1 Answer

224,165

What is engine swag done? Otherwise Faulty spark plug (s), Faulty ignition coil (s), Clogged or faulty fuel injector (s), Intake air leak, Fuel injectors harness is open or shorted, Fuel Injectors circuit poor electrical connection, Ignition coils harness is open or shorted, Ignition coils circuit poor electrical connection, Insufficient cylinders compression, Incorrect fuel pressure.

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