disconnect the module and let it sit overnight and see if the draw went away , , connect a test light between the negative cable to the battery and the negative battery terminal ( remove the cable from the battery first ) if the test light is on , then have a friend start removing fuses 1 at a time , and see when the light goes out , when it does then that is the circuit that is causing the drain , then isolate the components that are powered by that circuit and see which one is causing your drain. NEVER SEEN A TFI MODULE CAUSE A DRAIN ON A FORD PRODUCT BEFORE . but this might be a first
it could be the alternator , and all you would need to do is follow the testing procedure that I gave you to verify if thats the problem , that way you dont spend any unnessary money , follow the procedure ( the test i mentioned earlier ) then remove the positve cable from the alternator , and the connector plug , and if the light on the test light goes out then , YES , it would be the alternator , but if the light on the test light stays on , then guess what ( ITS NOT THE ALTERNATOR ) listen, follow the test procedures like i said , and youll find the problem , but take guesses without testing , and I bet youll spend alot more money finding the problem .
2007-09-02 02:04:40
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answer #1
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answered by smogman 2
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I'm with "John Paul" on this one.
If you have a bad rectifier (big diode) go bad, the alternator will charge the battery while the engine is running, but when you turn the key off, the blown rectifier will cause a short to ground through the alternator.
2007-09-02 02:27:06
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answer #2
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answered by Mr. KnowItAll 7
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STOP BACK AWAY! check your alternator first. Ingnition module stops drawing the battery down when disconnected? I doubt that!
2007-09-02 02:06:16
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answer #3
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answered by John Paul 7
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