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#1
11-13-2006, 10:04 PM
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Odd electrical problem ('85 300D)
Yesterday, my 300D cranked very slowly at the grocery store. I headed over to Jiffy Lube and had them put their tester on, suspecting a bad battery.
They told me the battery is fine, and is getting charged OK. Sure enough, when I cranked it afterwards, it cranked just fine. It was fine earlier today, but on the way home tonight, the lights were getting very dim at idle. I pulled it into the garage and shut it down. I noticed that when I turned the key off, the inside light got brighter. Then, I turned on the headlights, and they were nice and bright. When I turn the key to the on position, though, everything gets dim. Turn it back off, and everything is bright again. The alternator light has not come on at all, not even dimly. When I had a bad voltage regulator, it would glow. I would think it might be a shorting glow plug, but I wouldn't think they'd be on after driving for 20-30 minutes. Any ideas of things to check? Last edited by goat; 11-13-2006 at 10:17 PM. Reason: Adding model to title 
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#2
11-13-2006, 10:07 PM
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Just a wild guess but I would check the E fan on the radiator to see if its locked up and "dead heading" the electrical system.
__________________
Satan creates nothing: he only ruins everything. He does not invent: he tampers. And his followers are no different ~ Archbishop Carlo Maria Vigaṇ
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#3
11-13-2006, 10:16 PM
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Hmmm...well, I checked it, but it turns freely.
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#4
11-13-2006, 10:29 PM
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Let me add some more info: the lights are still bright in the "Accessory" position; only "on" is draining power.
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#5
11-13-2006, 10:32 PM
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Try pulling fuses with the key on one at a time to help isolate which circuit is pulling the load.
__________________
Satan creates nothing: he only ruins everything. He does not invent: he tampers. And his followers are no different ~ Archbishop Carlo Maria Vigaṇ
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#6
11-13-2006, 10:34 PM
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Thanks...yeah...I was kinda thinking maybe I ought to do that to narrow it down.
I'm just a bit exhausted from cutting up a big tree that fell in the storm last night, blocking my driveway...back out to the garage. 
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#7
11-14-2006, 10:19 PM
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Glow plug relay stuck...
Might want to open the relay and check for cracked solder joints and resolder....fixed mine....
__________________
1978 Yellow 300D (The Mustard Toad) 1980 Blue 240D (The Iron Toad) 1989 Grey Mitsu.4WD Mighty Max Pickup (Needs a Diesel transplant bad) (Open the pod bay doors HAL)
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#8
11-15-2006, 12:40 PM
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Quote:
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Hybrid Mode
