Question about 1990 Oldsmobile Cutlass Calais

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The heater in my 1990 olds wont heat up we checked the fluids they are fine and we put in a new thermostat. the heater just blows cold air

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Here's a couple of other things to check;
Make sure heater control valve is working - feel the heater hoses w/heater on. Both hoses should feel warm/hot. Test or replace your radiator cap - it may fit tight but they do lose their ability to hold adequate pressure. Make sure fan belt is tight and not glazed - loose or glazed belts will slip through waterpump pulley not spinning waterpump at correct rpms

Posted on Jan 04, 2011

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Posted on Jan 02, 2017

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