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Re: 88 gt idle? timing problem
Quote:
Originally Posted by 04vert86lx
If you have a tfi distributor the tfi module could be bad. I keep a spare module in my 86. Another possibility is a short in the the hall effect sensor in the distributor if it is stock ford distributor. A short in the hall effect sensor wiring will not throw a trouble code. I had similar problems that I chased for about six months before reading about the potential for intermittent shorts in the distributor that only happened when the car was warm. After I installed an new distributor the problem was fixed. Montegoman351 is right though, reading the codes is the first easiest step. Hope this helps.
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Arrrrgh, I had the same problem when I built my EFI, it would crank and crank...but no fire...had the module tested...it was good...chased down every wire...ohmed every wire...double checked everything...then I ran across a site on how to test the hall effect...600-800 ohms, IIRC, was good...mine was 1400 ohms...bought a new hall effect for $20, threw it in, and it fired right up...I about pulled my hair out over a $20 part... 
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'73 Montego MX 357C Homebuilt EFI, 9.5:1 comp, mild cam, 30lb injectors, A9L computer, Moates.net chip, 70mm TB, 76mm C&L mass air.
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