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Old 10-25-2009, 12:45 AM   #1
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Default 97 F150 Help turn over but wont start, no spark

Ok.... ive been trouble shoot this pos for 3 weeks.... finally i gave up and here i am.

truck died on the freeway ....towed it home, now she only crank but no sparks . so i plug in obd2 scanner. nothing, not linking. not communicate
check fuses all good. Humm must be computer right? ok

i check the wire harness... 1 of them big bundle wire harness was touching the exhaust manifold. 4 wires burned. so i solder it together. plug in obd2 scanner, still nothing. no sparks.

went autozone bought a computer. ( special order) plug it it.... still nothing no parks. donsent start. fuel pump work. fuel get to injectors.

so what else could it be??? anyone??
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Old 10-25-2009, 02:59 AM   #2
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Most "No codes" are wiring related. If I had to guess, I'd check to see if the EEC relay got fried when the wires grounded to the exaust manifold. Also see if all your fuseable links & your regular fuses show continuity. Here's the check list of fun things to do when in your predicament:http://www.fordfuelinjection.com/index.php?p=44
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Old 10-25-2009, 09:06 AM   #3
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Simple fix. Go to junk yard or ebay, get sinle points dist, install. Bus seriously, also check power to the coil, both pos and neg, and check any fusable links if there are any.
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Old 10-25-2009, 01:01 PM   #4
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Quote:
Originally Posted by dirtcrew51m View Post
Simple fix. Go to junk yard or ebay, get sinle points dist, install. Bus seriously, also check power to the coil, both pos and neg, and check any fusable links if there are any.

ive check the power to the coil.. have power. 12.5 but just when motor crank no sparks.

what sinle points dist?
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Old 10-25-2009, 04:32 PM   #5
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Power to the coil, no spark. Could be the Coil plus your EEC prob. You can p/u a used coil @ a junkyard for two or three bucks.
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Old 10-25-2009, 08:11 PM   #6
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What is single points dist? How old are you son? Just kidding. Its an old school system that has one wire and a breaker contact. Very simple. No electronic crap. If you get no spark, pull the cap, sand the contact, fire it up. You probably burnt out the pickup in the dist or the module, or you burnt a wire you couldnt find.

You should get a constant 12v to the coil when the key is on.
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Old 10-25-2009, 09:02 PM   #7
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So you have a TFI attached to you your distributor? You got a spout connector? if you do, remove it and then check for spark from the coil or try to start it. That removes the ignition system from the EEC control Loop. Timing defaults to whatever base timing is set at, and the timing curve is directly related to RPMs only (no computer advance). That's how my truck is set up. Not fixing anything, just another piece of the puzzle.
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Old 10-25-2009, 10:09 PM   #8
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Not to sound like a smart ***, just curious, so basically the ignition is stand alone? The only thing the computer controls is the timing?
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Old 10-26-2009, 02:36 AM   #9
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Quote:
Originally Posted by ymeski56 View Post
Power to the coil, no spark. Could be the Coil plus your EEC prob. You can p/u a used coil @ a junkyard for two or three bucks.
ok got brand new coil pack, brand new computer, fuel pump are good. still no sparks.. plug in obd2 scanner scanner said unable to link to vehicle.........
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Old 10-26-2009, 02:36 AM
 
 
 
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