Ford F-150 The entry level full size truck from Ford, one of America's best selling for decades.

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  #1  
Old 08-06-2018, 08:04 PM
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Now it seems like i'm getting a misfire. It still runs fantistic but getting a misfire at a red light or stop sign.. Go figure !!! I'm thinking a bad coil somewhere...
 
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Old 08-07-2018, 02:41 PM
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If you were to have the codes checked and they gave you a specific cyl that is misfiring , just switch the coil with another cyl .one of 2 things should happen , if the misfire moves to the new cyl location the coil has a problem. If no change it could be the spark plug, injector, or engine mechanical problem.

If you now switch plugs with a different cyl if the misfire moves there , plug problem.
If still no change, we're down to valve/spring, or wiring to the coil /injector or both. Last but not least is the PCM.
 
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Old 08-07-2018, 09:23 PM
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Sounds like a plan, I will definitely check that out, Thanks again...
 
  #4  
Old 08-11-2018, 08:20 PM
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Ok, I replaced all the coils and it runs as smooth as it came out of the showroom...
It cost me 36 bucks for 8 and that seemed like a good buy so why not replace them all.
 
  #5  
Old 08-12-2018, 02:31 AM
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Thanks for the update.
I hope you purchased a quality set of coils. If not , hang on to the old ones you might need them.
 
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