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Why does your heater blow cold air while idling but blows hot air while driving?
Low coolant, failed thermostat, partially plugged heater core...............
Why would your Uplander throw heat while driving and cold air when idling?
Poor circulation through the heater core. Probably a semi-plugged heater core or a faulty thermostat (assuming the coolant level is full).
How much fuel does a SUV waste idling?
Effectively all the fuel that it burns while idling. You are getting 0 miles per gallon while idling.
Why would the heater blow warmhot air while driving but cold air when sitting still?
Possibly defective thermostat. It sounds like it is opening up a bit with increased pressure caused by higher engine revs - when idling, the pressure decreases and the thermostat valve closes. Just a thought, anyway.
Why would heater blow warm air while driving but cold air while idling and why would enigine temperature go up while idling and down when driving?
When a vehicle is idling, the engine may not produce enough heat to warm the coolant effectively, leading to cold air from the heater. In contrast, while driving, the engine works harder and generates more heat, allowing the heater to blow warm air. The engine temperature can rise while idling due to reduced airflow through the radiator and less coolant circulation, while driving increases airflow and coolant flow, helping to cool the engine.
2001 Chevy cavalier no heat turns cold while driving idling its hot why?
I'd check the coolant level first, then the thermostat.
What would cause an unpredictiable temperature needle while driving and idling and could it be the water pump or a blown gasket?
I'd be suspicious of the thermostat.
Why does the heat blow cold while idling and warm when driving?
Poor circulation probably due to a restricted (plugged up) heater core.
Why would a 1998 Dodge Ram have low heat while idling yet full heat when driving?
AnswerYup, in most cases. Check the thermostat.
What is making your ford ranger heat no leaks changed thermostat cleaned coolant system only heats while idling giving it gas cools it down?
sounds like a bad thermostat even though it is replaced
How do you wire a single pole built in thermostat to a baseboard heater while feeding power to another thermostat?
Split the feed circuit (inside a junction box) and feed the hot to both the baseboard heater with the built in thermostat AND to the 2nd thermostat. If you have any questions, contact a local, qualified electrician, heating specialist or local handyman.
Why does the heater on a 2008 impala police package run cold while idling?
There are two hoses that go to the heater core, when the coolant is flushed an air pocket forms preventing hot coolant from reaching heater core while at idle. Happened with all our police impalas. Tell the dealer to fix it.
