why do I only get heat with acceleration in my 2007 Ford Explorer?
5 Answers
tennisshoes answered 2 years ago
Coolant level is low, air in the cooling system, partially plugged heater core, worn out vanes on the water pump. Usually it is the first 2 problems.
tennisshoes answered 2 years ago
Then there must be air in the system. I have had a few of these that would not clear out the air, I wound up putting them on a flushing machine to get it all out.
Bob answered 2 years ago
Sometimes raising the front of the vehicle will help during the air purge process.
OJ answered 2 years ago
If the problem only occurs while accelerating suspect a vacuum problem. There should be a pressurized canister associated with vacuum system. The purpose is to maintain vacuum when the engine accelerates when vacuum drops. Most have a backpressure valve which can stick.
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