I'm trying to fix cold start and stalling problems. Went to replace thermostat and found installed thermostat was gutted (wide open). Could the thermostat have anything to do with cold start and stalling problems? The car is not overheating.

Also, can anyone tell me where to find the monovalve for the heater?

Thank you.

The thermostat being gutted could cause problems that could affect driveability, but specifically it will have nothing to do with your problem.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician