1990 Mazda B2200 Heater Will Blow Hot Air Only Luke Warm Radiater

1990 MAZDA B2200
84,000 MILES
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heater will not blow hot air--only luke warm--radiater is full--tempature knob is as high as it will go.--had recent head gasket replaced but had same problem before that was done. can tempature control be bypassed just for winter use.??
Dec 5, 2012 at 11:38 AM
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KHLOW2008
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Check the heater core for clogging. Both heater core hoses should be hot. Ensure the air mix vents are working correctly.
Dec 5, 2012 at 1:50 PM
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