perhaps a silly question but.... you didn't install the coil backwards didja? We've all done it!
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perhaps a silly question but.... you didn't install the coil backwards didja? We've all done it!
Just one of my usual questions, Randy. Do you have a good ground from the engine to the chassis, battery to chassis, ECM ground to chassis, etc.??? EFI systems and computer controlled cars must have a good ground!!!!
Actually sounds like a weak coil, I'm certainly not claiming any expertise on electronically controlled engines, still a neophyte on them but I have learned that good grounds are essential.
It's the stock '92 Mustang coil. I'm using one of those pocket circuit testers with the little probes and the sweep needle. My checks have been both with volts & ohms....
I'm certainly capable of a backwards install, Mike but this time the coil plug only goes on one way.:)
Yes, Dave, I've checked all those grounds and they seem to be good. Perhaps I should spring for a new coil and see if problem is solved.....not sure what else to do at this point.....:HMMM:
Thanks for the input, guys!!!! Always MUCH APPRECIATED!!!!
I've got a Mallory that you can try but I'm sure time is becoming critical and shipping will be slow...
It may be the TFI coil. Known to go bad and cause a no start. '92 Mustangs did use that system. IIRC it is attached to the distributor but it has been a while.
Well, fellas, I've got a shiny new coil but still a no start!:mad::CRY:
I still have weak spark at the distributor. I've been googling my butt off and scouring over tons of Mustang forums & threads and it seems "highly possible" that my TFI module (bolts to dizzy) may be bad.....looks like I'll probably be throwing some more money at it tomorrow.....:CRY::(:3dSMILE:
Perhaps I'll attempt some of these tests on my TFI before I run out and buy one....
How to Solve an EFI No Start
Randy,
I totally forgot that you were using the stock Mustang electronics. The module on the side of the distributor is almost certainly the culprit, and they can go out in a heartbeat. I suspect that you've found your culprit. One tip - there's a "special tool" that's really just a very thin walled socket with a t-handle to get the two retaining screws loose that hold it in place. It's worth the six or seven bucks, or you'll be grinding down a socket. And don't forget the di-electric paste when you put the new one on, or the new module will have a short life.
Thanks, Roger! Sounds like a likely culprit to me, too!! I've also read about the "tool". Looks like the TFI module comes in a wide range of prices and some suggest replacing the PIP, too. I've even seen rebuilt distributors for the price of some of these separate parts.......obviously, the idea of a "budget swap" went out the window a while back!!:eek::eek::LOL:
My only real experience with Thick Film Ignition (TFI) was with a friends pickup truck, that thing seemed to just eat the module on the side of the dizzy. He changed so many of them he kept one in the glove box! One night we were headed home when the truck just died.. we popped the hood and I had him turn it over while I watched for spark at a plug wire. There wasn't any but I did see something spark where it shouldn't have! Turns out one of the injector wires had rubbed bare against the fuel rail! We taped it up and the truck never "ate" another module.. So any short under the hood seemingly will take out that module. Keep that in mind when working with the wiring and maybe disconnect the module first to protect it.