Hi Jim:

A clogged radiator can also be a problem too. I had a problem like yours when I purchased my first Mercedes. The previous owner took out the thermostat and that made it overheat.

You can try rolling down all your windows and turn up the heater full blast and try to get home that way.

Aloha,
Eric

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1987 260E Charcoal Grey 157,000 Miles
1987 260E Forest Green 120,000 Miles