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International Automotive Technicians Network
Re: no/poor heat
Posted to Technical Discussion Forum on 1/6/2021

You say that it cools off when driving. Does the engine cool off, as in bad thermostat, or just the heater?

I had an old Buick that had the heater hoses switched during replacement.

The engine stayed hot but the heater cooled off when driving, probably due... Login to read more.