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Old 01-22-2009, 04:09 PM
Registered User
Join Date: Nov 2008
Location: Liberal Kansas 67901re
Posts: 18
ETR switch climate control 1983 300 SD. problem

I have a problem with compressor not ingauging. I have traced electrial to the ETR switch and have 12V at tirminal #1 . No power to tirminal #2. If I jump across 1 to 2 the relay and compressor ingauge and A C will cool. Can you check the ETR switch adjustments ? Do not want to buy a new ETR switch if It will not fix my problem.

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Old 01-23-2009, 10:23 AM
david s poole
Join Date: Mar 2005
Location: dallas
Posts: 1,822
go buy one it will fix your problem.
David S Poole
European Performance
Dallas, TX

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
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Old 01-24-2009, 10:37 AM
Registered User
Join Date: Nov 2008
Location: Liberal Kansas 67901re
Posts: 18
Thanks for your reply. I like your tag. I was a Master Tech but am retired and sometimes have problem understanding MB problems. apriciate your input. I will try a new ETR. Thanks again.

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