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Miss or shutter on acceleration


Ford Dealer. I'm not aware of any aftermarket scanner (Snap-on Geni-sys, etc) that does a power balance graph.
 
Thanks I'm having the plugs and wires replaced Friday. We'll see if that helps.
 
Last edited:
Thanks I'm having the plugs and wires replaced Friday. We'll see if that helps.

If it's the coil, changing wires and plugs won't make a difference. If they are due then might as well. But otherwise you might consider getting new coils or done junkyard ones just to troubleshoot.
 
Got the plugs and wires replaced today. Spec's call for .052 to .056, actual gap was .083 to .088. Runs much better now. I was in rush hour traffic so I couldn't test it properly, but I will tomorrow. Thanks for all the suggestions.
 
Running 95% better but I got the same 3 codes P0442, B0849 & P0001
Reset cel and we'll see what happens next.
 

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