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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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Old 11-18-2004, 05:29 PM
Jrock909 Jrock909 is offline
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Symptoms of a bad ECM computer

What are the symptoms of a bad ecm computer? Could a symptom be a hot restart that the motor just cranks over and over but doesn't restart right away after the first start up of the day?
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Old 11-18-2004, 05:46 PM
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The first computer I used for my MAF swap did this. It would start ok cold, but if I drove it any and shut it off, it would not restart for a while afterwards. I checked and tested everything that I could though, I didn't just go buy a computer because I thought it was bad. I also couldn't get any diagnostic codes out of it. It could possibly be a bad TFI module as well, but unless it cuts off while running, I would doubt that it is the TFI..
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Old 11-18-2004, 05:51 PM
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The tfi module has been replaced, but I figured it wouldn't solve my problem at all....
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Old 11-18-2004, 06:04 PM
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Can you get any codes out of it?
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Old 11-18-2004, 06:14 PM
Jrock909 Jrock909 is offline
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sure can't, have replaced alot of components too, it's a glitchy problem
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Old 11-19-2004, 12:30 AM
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I would start to suspect the ECM if you can't get any codes. There are a couple of places that will test it, and if it's bad will rebuild it. I don't have the links on my computer at school, but I think I still have them at home. I'll check this weekend.
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Old 11-21-2004, 02:25 PM
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could be the guts inside the distributor - but if your ecm wont throw codes even if you disconnect something to force it to then it's probably on the fritz.
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Old 11-21-2004, 02:25 PM
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