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Having problems with coil packs, my struggling to accelerate? on 1999 Ford Expedition

Has anyone heard of the ignition coils made by motor craft beibg defective ?

Asked by for the 1999 Ford Expedition
I agree with goodguy! Maybe the coil aint your problem!! If a misfire is what you are chasing, possible restricted injector, vacuum leak or low compression. Any codes?
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ALSO CK TO MAKE SURE YOU DID NOT BEND PRONGS INSIDE PLUG AT COIL PAK IT HAPPENS
there is always a chance of getting a bad one from anywhere