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happykanuck
Joined: 23 Sep 2006
Posts: 5
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| Posted: Sat Sep 23, 2006 9:33 pm Post subject: electrical problems 387 pete 2004 |
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| occasionally when i open the drivers door the engine shuts off. I have no power at the key or ignition switch but I still have power in the bunk, 4 ways work, headlights work, once I turn the headlights off my marker lights stay on even though my headlights are off, after 15 or 20 minutes the power comes back on and I can start my truck, this last time it was 24 hrs. I've unhooked all the batteries to reset the ecn. I've changed the ignition relays, and am now baffled, anybody with any ideas? |
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Jumbo
Joined: 27 Aug 2006
Posts: 911
Location: Northern Wisconsin
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| Posted: Sun Sep 24, 2006 7:32 pm Post subject: |
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| Try the engine ignition circuit breaker, it looks like a fuse only bigger and it is labled in the fuse box. My 04 pete shut off when you turned the cruise on. Scary going down the road. but after you got off to the side of the road and turned the cruise off the truck would start. The circuit breaker was weak. Pushed in a new one and problem ended. |
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happykanuck
Joined: 23 Sep 2006
Posts: 5
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| Posted: Mon Sep 25, 2006 9:56 am Post subject: |
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| have already tried the ignition fuse and another under the dash didn't help, thanks |
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MADLUX
Joined: 05 Jun 2005
Posts: 566
Location: Virginia Beach, VA
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| Posted: Mon Sep 25, 2006 10:31 am Post subject: |
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| There might be a cut wire somewhere in the door, and when it moves a certain way it might short out. Just a thought. |
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number9
Joined: 12 Apr 2006
Posts: 75
Location: KY
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| Posted: Wed Sep 27, 2006 5:21 am Post subject: |
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I think the 387 are known to have electrical problems. Can't help you on your issue though.
Have a look at this guys website and his repair logs - that would suck so bad http://www.mypeterbiltlemon.com/ |
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LOAD IT
Joined: 02 Sep 2006
Posts: 614
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| Posted: Mon Oct 02, 2006 9:36 pm Post subject: |
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| I had the same problems. Push all of your relays in. If this solves your problem, spread out the prongs on each relay and reinsert it. The vibration is shaking them out causing a bad connection. This problem cost me a lot of money in 2004 until a road service guy told me the problem that 3 Peterbilt dealers just couldnt seem to diagnose. Let me know how it goes. |
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happykanuck
Joined: 23 Sep 2006
Posts: 5
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| Posted: Thu Feb 01, 2007 5:29 pm Post subject: |
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| sorry after i found the problem i haven't checked this problem, but yes it was a relay under the glove compartment. After going to a few places and spending a lot of money replacing different things I ended up at a Peterbilt dealer and found it. Just a note to say thanks for the input. |
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