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  #16  
Old 10-26-2003, 05:50 PM
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Join Date: Apr 2003
Location: austin, texas
Posts: 26
jumpy temps

My 85 300td is alsp hovering around 100c and jumping up into the red randomly, especially when I put on the head lights. '

Makes me think old deis is quite right.


Did he ever reply about the exact location?

BTW, I once tried replacing the sending unit and that wasn't it.

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  #17  
Old 10-26-2003, 09:25 PM
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Satyameva Jayate Ad vitam
 
Join Date: Jun 2003
Location: Boondocks
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In your case it is an earthing problem, check your earth connection.
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  #18  
Old 11-04-2003, 04:53 PM
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Join Date: Apr 2003
Location: austin, texas
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checked earth already

I have cleaned the earth at the engine compartment and at the tranny very well and that didn't help??
any ideas
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1972 220d Blew motor twice! ouch
1985 300TDT 169k
Many nissan pickups 86-89 200k plus
A vast portfolio of oldies
1949 chevy 1/2 ton
1947 international kb-3
1955 Cadillac coupe de ville
many others
1977 BMW R 100/7
1987 BMW K100RS
1985 Honda XR350
others
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  #19  
Old 11-04-2003, 10:03 PM
EdV
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Here is what I did once to make sure I had the correct temp. Pickup up a mechnical gauge and slide the sensor in the radiator hose and clamp it. Bring gauge to where you can see it. I drove the car that way for a few days until I knew that my car wasn't overheating and that it was just the guage not accurate.
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  #20  
Old 11-04-2003, 10:26 PM
EdV
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Coleman Kelly

Your problem is most likely in the instrument cluster. You have a trace going bad. When turning on headlights and things go screwy is a good sign.

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