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Old 04-20-2012, 10:31 AM   #1
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fords remote firewall mounted module info

was reading that when Ford relocated the module away from distributor, they did this without much thinking on protecting the wiring coming out of the distributor, that those wires leading to the module should be shielded far away from any sparkplug wires because the sparkplug ignition wires will interfere with the signals going to the module, the guy said the best setup was with the module bolted on the distributor less interference better signals with his tests(pre1988) but we cant have this setup with our efi setup unless a custom distributor, when i checked my wires coming out of the distributor, sure enough my wires to the left bank of the engine were touching that distributor harness,i will raise them up a little so as to keep them away, iv had no issues with the spark or misfiring but maybe this info might help you
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Old 04-20-2012, 02:59 PM   #2
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The PIP wire is well shielded coming from the distributor to the ICM and the PCM Computer. It is wraped with foil and a bare wire ran all the way. The other wires are power to the PIP and grounds. The ground wire to the Computer is also is shielded. But not the ground to the ICM from the PIP.
All the grounds for the Ignition system are at the Distributor. So the Distributor has to be well grounded to the block.
I think Ford did a good job of shielding them.
It does not sound like this guy knew what he was talking about or was trying to sell something.

Note the shield can only be grounded on one end like FORD made it, if it is grounded on both ends it can and will cause problems.
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Old 04-20-2012, 03:56 PM   #3
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the guy had some kind of scope or analyzing equipment doing his comparisons, have to look for that exact page ahh should of saved it, he said the distance the signal had to travel was too far to be accurate,when Ford was being sued for module failure they had rushed into the design, my harness is covered with that black tubed sheathing, but the first few like seven inches of wire loom coming out of the distributor are not covered, im sayin if someone has as a bad arcing wire and it gets near those wires it would make sense to disrupt the signal?,,iv done the wiring of a GM 4 pin module to the pre efi ford durapsark , but not possible with the efi
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Old 04-26-2012, 09:30 PM   #4
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I've never seen a problem with the fender mounted TFI modules. The reason they moved them was because of premature failure of the dizzy mounted modules due to excessive heat. I've had plenty of dizzy mounted modules fail over the years but never seen a remote mounted one fail. I've had many. I've also never had an arcing problem but that can be an issue with many engine designs. Good info though for people to check it and see if they need to move theirs or add some split loom tubing.
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