Quote:
Originally Posted by jdh122
I ran an extra ground wire from the gauge and that immediately "fixed" the problem for less than $2. Now the gauge reads around 80-85 all the time, even in stop and go traffic with the AC running here in Houston during the summer.
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Elaborate on that extra Ground wire. My gauge reads hot too but I shot the block with IR and it's at least 15-20 degrees cooler than it says...
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2002 E430 4matic (212,000km)
2002 ML500 'sport'

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