Over heating question - Mercedes-Benz Forum

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post #1 of 3 (permalink) Old 06-12-2004, 10:43 AM Thread Starter
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Date registered: Oct 2003
Vehicle: 1976 300D
Location: Canada
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Over heating question

My old 76 300D has been (based on the gauge reading) running quite hot lately. If I give the gauge cover a bit of a tap it jumps back down to a more “normal� running temp or 175 on the gauge.

At times the gauge can also be quite erratic and bounces all over the place.

Is this a sign of cooling system troubles or just a old tired out gauge.

Oh! and the system had a over haul two years ago including a new thermostat.


Life is far too short to be taken seriously 8)
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post #2 of 3 (permalink) Old 06-12-2004, 02:42 PM
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RE: Over heating question

Some may argue it’s a tad early but a coolant flush and refill may help. [:)]
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post #3 of 3 (permalink) Old 09-09-2005, 01:10 PM
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RE: Over heating question

Sounds like the needle is just sticky if you can tap it and make it go down. Otherwise the most likely culprit is a bad ground, perhaps between the engine and body.
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