96 f150 4wd starting problem
12-20-2010, 07:34 PM
#1
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96 f150 4wd starting problem
I cant get my truck started. It has no fire at the coil wire. I do have primary power to it.I tried a new coil , hooked it up but didnt bolt it down. still no fire. I hooked up a diagnostic tester and it said no DTC's stored in vehicle computer. I just wondered if anyone had or heard of this problem or may know what's wrong.
12-20-2010, 07:39 PM
#2
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The coil fires by switching the ground. The typical suspects are the TFI module, or the pick-up coil inside the distributor.
Both of these can be checked before doing any blind replacements.
Both of these can be checked before doing any blind replacements.
12-22-2010, 05:06 PM
#3
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Do any of these keep the coil from sparking? I replaced the coil and it worked fine for 2 days. Now it wont fire again. I will check what u suggested , Thanks
P.S.where is the TFI module?
P.S.where is the TFI module?
Last edited by Rsnake460; 12-22-2010 at 05:26 PM.
12-22-2010, 07:53 PM
#4
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Eh, not sure where it is on your model year. On mine, it's attached to the distributor - rectangular block, perhaps 1.5 inches tall by 5 inches long with about a 5-wire connector.
As I hear tell, the later model years had it moved over by the wheel well cover?????
As I hear tell, the later model years had it moved over by the wheel well cover?????
12-22-2010, 08:26 PM
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Hmm, my Napa guy seems to think it's in the distributor. I came home a little bit ago and my truck started up. I have tried it four times since and it fires instantly. This is driving me nuts! I just wonder if I wanna spend 44$ on a maybe for the TFI module. I will wait till after Christmas and deal with it then. Thanks for your input and happy holidays.
12-22-2010, 08:33 PM
#6
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Now I can almost bet real money that your NAPA guy is talking about the pickup coil. :-)
The intermittency is more of a sure sign that it's one of the two typical suspects previously mentioned. Testing the components raises confidence on getting the right one.
After all, one of Murphy's Law spinoffs is that a 50/50 chance of being right usually means a 75% chance of being wrong. :-)
The intermittency is more of a sure sign that it's one of the two typical suspects previously mentioned. Testing the components raises confidence on getting the right one.
After all, one of Murphy's Law spinoffs is that a 50/50 chance of being right usually means a 75% chance of being wrong. :-)