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Intermittent speedometer--temperature related. Does something need resoldering? 700

I have had similar problems: no speedo when cold, suddenly started working when warmed up. However, the temperature was only coincidental. The culprit is the wires at the sensor on the differential have deteriorated and are shorting out. It is a tight space to work under, but I'd bet you find some rotten insulation on the sensor wires near the plug. I'd still like to get my car up on a rack and do a thorough re-wire of that area.

Hope this helps.
--
'92 745 B230F






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