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#1
04-12-2004, 01:55 PM
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AC Electrical Problem
My AC won't work because the compressor won't come on because, apparently, my compressor relay is not getting a TD (rpm) signal. I'm told this is sort of a safetly feature - the compressor relay compares the engine rpm to the compressor rpm and unless they are the same the compressor won't come on. So my compressor won't come on because it's not getting the engine rpm signal. I realize this is an obscure question but does anyone know where that engine rpm signal comes from, and what might be causing the failure. The wiring harness was recently replaced but I know the AC worked for a while after that.
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#2
04-12-2004, 02:05 PM
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Year and model please...
 ...and engine if known...
__________________
2009 ML350 (106K) - Family vehicle 2001 CLK430 Cabriolet (80K) - Wife's car 2005 BMW 645CI (138K) - My daily driver 2016 Mustang (32K) - Daughter's car
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#3
04-12-2004, 02:20 PM
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Yes, we find such information to be quite helpful.
Have a great day,
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#4
04-12-2004, 03:22 PM
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Boy you guys are fast - I had already realized I forgot the model info, logged back on to edit it and found two posts already. The car is a 1994 E320 coupe, 104 motor, the tach is working fine. Thanks.
Last edited by deanyel; 04-13-2004 at 12:15 AM.
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#5
04-13-2004, 04:43 AM
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I hope you get it fixed soon, Phoenix is about to become an oven. The car is white, isn't it?
__________________
Regards Warren Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL ENTER > = (HP RPN) Not part of the in-crowd since 1952.
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#6
04-13-2004, 11:54 PM
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No, no - the car is black. But when Phoenix turns to an oven, which is a little more than half the year - I leave. But I thought I had it sold to a year-round resident - but the deal fell through - so it's become a low priority project.
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