Bouncing Temp Gauge - Mercedes-Benz Forum
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post #1 of 3 Old 03-05-2005, 06:02 PM Thread Starter
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Bouncing Temp Gauge

I have an 83 300SD Turbo and the temp gauge has never worked correctly. When the car is first started the temp gauge will bounce up and down. It will continue to bounce up and down for about 10-15 mins from just starting the car. The problem does stop after the car has run awhile. I am trying to figure out what would make the gauge bounce, and what remedy can I take to correct it.

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post #2 of 3 Old 03-07-2005, 01:43 AM
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There are a number of problems that could cause a bouncing temp gauge including bad connections at either the sensor or the gauge. Also an air bubble in the coolant could give odd readings, or maybe the sensor is just bad.

\'87 Mer-B 300D (220,000 miles) (sold)
\'93 Mer-B 300D (173,000 miles) (sold)
\'87 Porsche 928 (101,000 miles)
\'98 Dodge Ram quad-cab (250,000 miles)
\'2001 CLK430 Cabrio (50,000 miles)

Past cars: 1969 mercedes 250, 1981 300D, 1972 220D
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post #3 of 3 Old 06-09-2005, 07:58 AM
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My electric cooling fan went bad and caused the same problem.
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