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  #1  
Old 08-19-2007, 11:44 AM
amosfella's Avatar
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Join Date: Jun 2006
Location: Vulcan, AB, Canada
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300 sdl having electrical problems

I have an 87 300 sdl that has been having some electrical issues lately. For starters, the rear light come on and stayed on for no reason 2-3 nights ago. No big deal, I just started the car and it sent out and functioned normally.
Then this morning I woke up to find the my aux rad fan had been running all night. I couldn't get the it to shut down till I boosted my car and got it running and the battery charged. When I shut the car down, it stopped.
Also as a side note, my AC compressor does not stop running while the car is running. Even with the heater at full blast. I know the clutch works because I pulled the kilma while the car was running and it disengaged.
I did replace the head unit for my car stereo before all these problems started, if that has anything to do with the problem, although I don't see that happening.
Does anyone have any ideas where to start to fix this problem?? Thanks.

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'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic
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  #2  
Old 08-19-2007, 03:21 PM
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bump
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All it takes for evil to prevail is for good men to stand by and do nothing.

Too many people tip toe through life, never attempting or doing anything great, hoping to make it safely to death... Bob Proctor

'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic
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  #3  
Old 08-19-2007, 03:43 PM
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Join Date: Jul 2006
Location: Central FL
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My fan stayed on last month...

I replaced the fan relay in under hood fuse box - just start pulling relays when off, you''l find it when the fan stops. I grabbed a couple extras from a junkyard run BEFORE I needed one.
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  #4  
Old 08-19-2007, 10:32 PM
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Join Date: Jun 2006
Location: Vulcan, AB, Canada
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I'm assuming the the AC compressor clutch shouldn't be constantly engaged while the car is running, especially with the heat on max. Does anyone have an explanation for that??

__________________
All it takes for evil to prevail is for good men to stand by and do nothing.

Too many people tip toe through life, never attempting or doing anything great, hoping to make it safely to death... Bob Proctor

'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic
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