1997 Crown Vic with a miss.

I recently developed a miss in the number 4 cylinder.I have changed the plugs,and wires.Still has the miss.I have checked the Fuel Injector and the coil pack both are good.The check engine light stays steady at idle but blinks when the car goes over 40mph.Any ideas what else it might be?

Reply to
bob_in_stpete
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you say you checked the coil pack and injector. How did you do it?

Reply to
jfrancis311

The coil pack was checked with a voltmeter and the injector was replaced with a new one.

Reply to
bob_in_stpete

Inadequate test.

Reply to
aarcuda69062

Do you mean a voltmeter or an ohmmeter?

Does this car have multiple coil packs so you can swap 'em around and see if the problem moves.

The coil pack really is suspect here.

--scott

Reply to
Scott Dorsey

Seems it isnt the coil packs or the injector.I have no compression from the #4 Cylinder.All others are reading at 150.

Reply to
bob_in_stpete

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