I have an 1994 Chevy s10, the problem I have the thermostat keep knocking when is reach the temperature , I has changing water pump , heater core, and the thermostat don't know what else to fix. Help.
Did you make sure that all the air has been bleed out of the cooling system? Recheck your thermostat, if its making a banging noise it may be a bad one even though it is new.
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