pcm problems??? - Ford Powerstroke Diesel Forum
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Old 01-25-2014, 05:47 PM
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pcm problems???

2001 f250 c.c. 4x4 lariet. I had smoke issues before as some may remeber, thanks for the help CSIPSD, and others. But I think I need to solve this other problem first and it may solve the smoke issue. A couple of times I have thought I had a bad connection at the chip. A release of the e-brake or maybe bump my foot on something near the pcm under the dash and the truck would die. So I would unplug the chip and clean the contacts at the chip and pcm. And plug back in, that seemed to have fixed the prob. But this last time cleaning, and issuring good connection doesnt help. I made it into driveway, and truck is idling fine, after small issue while driving home. So I start wiggling and tapping everything under dash to find loose connection and going for the chip, I barely touch the chip cable and it dies. Bad connection at the chip??? Everything is super clean and plugs in nice and as tight as it is going to. Still nothing and also as with other occassions all pcm functions are dead no pcm lites on dash, no tranny on/off, no tach needle movement. So I have checked all of the plugs that make sense. The ign. Plug. The pcm plug, chip plug(again). All fuse panels, all fuses, the spades inside fuse panels. I have wiggled everything, removed fuses re inserted. Cannot find a bad connection, no burns nothing! Normal key on functions lite up on dash, but no pcm functions, not even a flicker. I am almost convinced there is no "bad connection". I removed the pcm to check the pins for damage, they are all perfect. But when I removed pcm it was warm (after having key on for a while checking). So it has had voltage in it. Does it sound a bad conn. Or needs a new pcm??? Oh, and torque/obd2 will not communicate any more. And with chip IN as stated no pcm lites on dash, unplug the chip and the cel is the only pcm lite/function on, but still no communication???
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Old 01-28-2014, 10:52 PM
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you get any lights when you turn the key on?
such as WTS light

i bet your pcm is FRIED from your chip wiggling around all the time.

time for a new pcm and when you put your chip on secure it with duck tape!
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