QuestionQUESTION: My heater only blows hot air while at higher speeds. Cold air while idling.
ANSWER: check your coolant level
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QUESTION: Coolant level is ok and also all fan speeds are ok. Thanks!
ANSWER: u have an air bubble in the system
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QUESTION: What can I possibly do about the air bubble?
Answerthere is a funnel that will hold coolant in there while the air is circulated around and pass out the funnel on the radiator cap. Did u have some work done to it awhile ago?
Plus there is a bleeder on the bleeder block housing on the top of the engine
