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#1
04-05-2011, 11:05 AM
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Tachometer on 95 E300 Diesel
My tach is not working. I was told it was some how linked to the AC clutch cut out....I have done some searching on this and other forums, but most of the threads for for earlier models. Can someone point me to troubleshooting this problem?
Thanks
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1995 E300 Diesel 1994 E320 1999 C230K 1994 S500 W140 1990 300 SEL 
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#4
04-05-2011, 12:49 PM
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Overvoltage Protection Relay. It is behind the battery, behind the splash-shield, has a fuse on top under a clear cover. Sometimes the fuse goes bad, but often the relay is bad, I keep a spare as I've replaced one on all but one of my 124s.
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 Gone to the dark side - Jeff
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#5
04-05-2011, 01:09 PM
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Oh OK, that makes sense. But from reading thru the other threads, it appears this relay covers the AC and the Tach. My AC is working fine....so could it still be this relay?
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1995 E300 Diesel 1994 E320 1999 C230K 1994 S500 W140 1990 300 SEL
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#6
04-05-2011, 01:56 PM
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Not sure, some had a single circuit, others dual. I'm not familiar enough with the '95 E300 wiring.
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Gone to the dark side - Jeff
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#7
04-05-2011, 02:54 PM
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could still be the OVP relay, there should be a separate relay for the AC with 'KLIMA' written on it.
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1993 320TE M104 --------------------------------------------------- past: 1983 230E W123 M102 1994 E300D S124 OM606 (x2) 1967 250SE W108 M129 1972 280se 3.5 W108 M116 1980 280SE W116 M110 1980 350SE W116 M116 1992 300E W124 M103 1994 E280 W124 M104 ---------------------------------------------- "music and women I cannot but give way to, whatever my business" -Pepys
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#11
04-07-2011, 09:38 AM
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OK, the OVP relay fixed the problem. However, I don't see a relay with KLIMA on it. But the AC and the Tach now work perfectly.
Thanks for all the help.
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1995 E300 Diesel 1994 E320 1999 C230K 1994 S500 W140 1990 300 SEL
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#14
04-07-2011, 01:48 PM
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I doubt if you have an aftermarket a/c. I don't remember if they have the Klima or not on this year. If you have one it is a little further towards the firewall from the OVP relay.
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Jim
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#15
07-01-2016, 11:41 AM
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Just to update this for those searching like myself and have information that could help.
On the 95 E300D, the Klima relay is actually labelled D-KLI/KD and my particular 95 has a part number of 003 545 69 05
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cheers!!
Linear Mode
