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Old 12-28-2007, 05:40 PM
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Unhappy PCM? Location? Help!

I have the same problem many others are having, No "wait to start light" and motor keeps cranking. It seems after reading many forum postings that my problem is either a blown fuse, bad PCM, shorted fuel heater, or combination. I can't find any blown fuses under the dash, I found two blown fuses under the hood (#16 and #24). Does anyone know what these fuses go are for? Where can I locate the PCM? Can anyone help! I miss and need my truck! Thanks (2000 F350 7.3L)
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Old 12-28-2007, 05:41 PM
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It is on the fire wall, down by the emergency brake under the dash.
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Old 12-28-2007, 05:42 PM
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The PCM is near the parking brake. Have you tried replacing the fuses? Do they blow again?
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Old 12-28-2007, 05:46 PM
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None of the fuses under the dash are blown. only #16 and 24 fuses under the hood. Which modul under the dash is the PCM?
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Old 12-28-2007, 05:49 PM
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It should be encased by a black plastic cover. It is by the kick panel by the e-brake. It measures about 8 tall by 10 inches long and about 2 inches thick. It is held in place by three screws.
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Old 12-28-2007, 05:52 PM
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Try watching this...

Diesel Movies - I install a DPTuner F5 chip in my buddies truck. Positions were Stock hi idle 60tow 80econo 120 race 140smoke.
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Old 12-28-2007, 05:54 PM
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#16 is the Trailer Battery charge relay

#24 is PCM Power Relay

Hope this helps

Jim
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Old 12-28-2007, 06:02 PM
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I know on the early models the fuel bowl heater is on this same circuit (PCM Fuse), so you will want to unplug it. Because it is most likely the problem that is blowing the fuse.

Jim
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Old 12-28-2007, 06:07 PM
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Thanks guys! Helps a lot. I have located the PCM, and will try replacing the #24 fuse tomorrow. With your help I actually feel like I can find and fix the problem myself, saving lots of money. thanks again, i can only get dial up internet out here so my responses will be slow.
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Old 12-28-2007, 06:08 PM
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How do I unplug the fuel bowl heater? How important is the fuel heater?

Last edited by F350 UK!; 12-28-2007 at 06:19 PM.
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