Won't start, Won't scan! HELP!!! - Ford Powerstroke Diesel Forum
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Old 11-21-2012, 09:46 AM
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Won't start, Won't scan! HELP!!!

I bought my son a nice '97 7.3L F250 about two weeks ago. He hasn't had any problems out of it in the few days he's driven it until last night. He cranked it up to leave and was pulling out of the drive when it died for no apparent reason. We pushed it back in the yard and it won't do anything but spin over. It doesn't even attempt to fire. The batteries are new. I put my Snap-On scanner on it this morning and it won't read. It won't even power up unless I hold down the reserve power button and when it does, it goes through the KOEO process then says "test aborted: engine not responding". I thought the problem might be with the scanner, so I put it on my '95 and it worked perfectly. I even did a buzz test on my 95 while I had it on there and it worked without holding down the reserve power button.

Any suggestions at all? I assume that if the scanner won't even read power, then it must be something eletrical or computerized? The lights, radio, etc. all work perfectly. It just won't start.

I bought the truck from a local used car lot, but it was as-is, no warranty.

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Old 11-21-2012, 12:49 PM
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Is the CEL illuminated? Does the Wait-to-Start light come on when you turn the key on for the glow plugs? If not, check fuse #22 in the underhood fusebox. If it is blown (check it with a multimeter, don't just look at it) the fuel heater may have shorted out (the same circuit supplies power to the PCM). You will need to disconnect the fuel heater (2nd wire down on the driver's side of the fuel bowl, funky looking spade connector) or disconnect it at the small spade connetor on the inside of the fuel bowl after draining and removing the filter. Replace the fuse and try again. Also make sure the cigarette light fuse is good as it also powers the duagnostic port. Post up what you find. Cheers!
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Old 11-21-2012, 12:59 PM
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I pulled the fuse and it was blown. I followed the instructions, replaced it, left the heater unplugged and now it's running. I even managed to pull some codes, which seemed to be either a bad glow plug or a glow plug harness problem and a IAT sensor issue. But the main thing is it's running and I'm not stranded. Thanks for the help!
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