SL/R129: Coolant Temperature Sensor
06-18-2015, 03:58 PM
#1
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Coolant Temperature Sensor
Is there a fix or replacement CTS that would lower the running temperature of the coolant by regulating the fans more frequently?
06-28-2015, 01:46 PM
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97R129-01W163-94E320-93500E
06-29-2015, 10:03 AM
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97R129-01W163-94E320-93500E
You put a 1.1k resistor across the 2 poles of the temp sensor. In other words, you connect (short) the sensor's 2 poles using a 1.1 k resistor.
06-29-2015, 05:51 PM
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1992 400E, 1997 SL500, 2009 R350, 1998 SL500 (for sale)
06-30-2015, 09:49 PM
#6
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Thanks EDCARLS
Did as EDCARLS suggested and the engine runs much cooler. Thanks for the tip! Total cost 25 cents for resistor and ten minutes to solder the two wires.
