Obviously I could be wrong, but I am not sure the gauge is at fault. If the gauge is grounded, the needle pegs at 120. It just does not read correctly from the temp sender.

Could it have something to do with low coolant level? When I started the car the evening after I picked it up, the coolant was low because of my greasecar system - all the air pockets filled and the coolant was low. I filled the coolant tank and it seemed to be okay, but I wonder if it could be related...

Any thoughts?

__________________
Autos:
1991 350SD 276,000 miles
2001 VW Beetle TDI 115,000 miles

Horns:
1955 Selmer Mark VI Alto (55,xxx)
1958 Selmer Mark VI Tenor (85,xxx)
1964 Selmer Mark VI Tenor (125,xxx)
1967 King Super-20 Tenor (430,xxx)
2002 Selmer Series III Soprano

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