Greetings,

Just wondering if you have ohmed out your interior as well as exterior temp sensors for correct readings? I would also look to see if the interior sensor bottom air flow tube has come off or is deteriorated. I had a similar problem on my '80 300TD and found that the temp wheel needed calibration and was pretty easy to do yourself to see if it was set right.

Charles

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"Tell me and I will listen, Teach me and I will learn, Show me and I will accomplish, Involve me and I will succeed."
'84 300SD 256,000 Gold on Brown (Mileage Award)
'86 300E 246,000 Blue on Tan