This is topic How can you detect a bad tfi? in forum Tech Talk at Northern California Ford Owners  .


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Posted by 50.stang (Member # 4009) on :
 
I just wanted to know the symptoms of a bad TFI? Also, if the car were to die, would it run again after it cooled off?
 

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Posted by FasterDamnit (Member # 442) on :
 
Yes,

Best bet is to get another one and swap it in and see if it helps. Even a JY unit will work for torubleshooting.
 

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Posted by racercosmo (Member # 1864) on :
 
Most auto parts store have a module tester. Some of them even know how to use it.
 

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