Diesel Data: Automotive Repair

Description







DESCRIPTION

CAUTION: Do not operate an engine without a thermostat, except for servicing or testing.

A pellet-type thermostat controls the operating temperature of the engine by controlling the amount of coolant flow to the radiator. The thermostat is opened when the engine temperature reaches 195°F (90°C). When opened, the thermostat allows engine coolant to flow to the radiator. This provides quick engine warm up and overall temperature control.





The same thermostat is used for winter and summer seasons. An engine should not be operated without a thermostat, except for servicing or testing. Operating the engine without a thermostat can cause the following problems:

- Longer engine warm-up time
- Unreliable warm-up performance
- Increased exhaust emissions
- Crankcase condensation

This condensation can result in sludge formation.