F550 6.0 pcm issues????
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F550 6.0 pcm issues????
Hello all, thanks for having me on your site. The truck I'm working on is a 2003 f550 with a 6.0, and 382000 kilometers.
My service truck died on me couple days ago, while running. As I rolled to a stop, I noticed that my temp gauge on the dash dropped to cold. (Truck was hot). Tried starting, and I have a crank, no start situation. After towing it to my shop at work, I hooked it up to my scanner, and found that the pcm will not communicate with the scanner (otc genisis). I have no injector buzz with key on, wait to start light comes on for an abnormally long time. I have 48.3 volts on the ficm,(4 screw), and haven't been able to find any chafed wires as of yet.
I am pulling my hair out here. Any help would be fantastic.
My service truck died on me couple days ago, while running. As I rolled to a stop, I noticed that my temp gauge on the dash dropped to cold. (Truck was hot). Tried starting, and I have a crank, no start situation. After towing it to my shop at work, I hooked it up to my scanner, and found that the pcm will not communicate with the scanner (otc genisis). I have no injector buzz with key on, wait to start light comes on for an abnormally long time. I have 48.3 volts on the ficm,(4 screw), and haven't been able to find any chafed wires as of yet.
I am pulling my hair out here. Any help would be fantastic.
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I will point out that the ficm, and the ficm wiring harness were replaced this past winter, due to a cold startup smoke (fuel?) Issue, with no improvement to symptoms.
Last edited by f550servicerig; Aug 21, 2015 at 08:24 AM. Reason: Not enough info
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