Only for a very, very, very brief time. Keep in my that everything including the water pump is driven by the belt. The temp gauge will show coolant temp at the thermostat housing, and will conversly stay cold. The coolant in the block and head will get hot very quickly with no circulation.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record