I think replacing the thermoswitch and thermostat are in order. I found the thermostat in Fast Lane, but not the switch. I sent in a parts request so we will see what happens.

Thanks,

B52rule

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1960 190D (college car), gone
1995 E300D, 325 k
2019 LEXUS UX 250h (spouse mobile)
2003 Nissan Frontier Crew Cab, 125K
2007 Jeep Grand Cherokee Overland 3.0L MB diesel, 200K
1978 GMC Classic Motor Home