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Is it possible to get a clearcoat-only paintjob? When winter arrives, the last thing you want breaking down is your If the thermostat is sticking open, then the engine not only will have a longer time to warm up the coolant, but the computer system will think that the engine is cold all the time and make the fuel system go full rich all the time. technicians, Trusted mechanics, rated by thousands of happy car CHECK THE LEVEL AND TOP IT OFF, BUT........CHECK TO SEE WHY YOU ARE LOW ON COOLANT. As far as the heater not heating up fast in the car, either the engine coolant is not hot enough yet to heat up the car or there is an issue with the heating system or cooling system in the … A rough idle may be caused by things such as low fuel pressure, low voltage to the fuel injectors, dirty fuel injectors, a vacuum leak, a faulty Oxygen... Hello. The slave cylinder is what makes it easy for you to manually shift through the gears of the car. Why are most auto shops open Monday through Friday from 8-5? Heater core exterior: The heat-radiating fins on the outside of your heater core could also be clogged with debris that makes its way in from the outside air intake at the base of the windshield. Made with ♥ in Silicon Valley. Ensure engine coolant level … Hi, I have the vehicle listed above it is the SEL model. If the valve is working correctly, then the thermostat may be sticking open when the engine coolant is cold. If If you’re in the market for a used Pontiac vehicle, you may want to check out cars under their certified pre-owned program. Even if you live in Florida, Texas or California, these days you need your car's defroster to work properly to fight those early morning chills, and if you live up north a working heater can be a matter of life or death. no heat at idle. At the same time check your engine belt or belts for proper tension. Tags: ford, escape. when the engine is cold check the radiator, it could be low or needs flushed. I feel we need some clarification from Courtney. As far as the heater not heating up fast in the car, either the engine coolant is not hot enough yet to heat up the car or there is an issue with the heating system or cooling system in the vehicle. Turns cold when I leave it in park and running. I changed the thermostat, then the heat would blow hot/cold/hot/cold, I didn't realize you had to bleed the air out of the system after changing the thermostat. Popular Answer. Most (not all) cars are heated by the engine. (No Trucks) - Heater only works when pressing the gas? Thats odd, as I would figure it would be the other way ... to very little. Mar 28, 2001 8,035 6 81. The heater core is a kind of miniature radiator that sits in your car's climate control duct. Hi there. Trying to work out why your car heater isn't working and why the car heater is blowing cold air when it should be hot? 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Jay on December 05, 2016: My fiancé' so grandmothers van blow heat in the summer but stopped as the temp started dropping into the 50s and as it kept dropping it still won't work. Even if you live in Florida, Texas or California, these days you need your car's defroster to work properly to fight those early morning chills, and if you live up north a working heater can be a matter of life or death. Power to alternator, starter. It also only seems to blow heat when I'm accelerating. Security light is on inside the car. heater only works when driving 70-mph - 1995 mercury villager or Nissan Quest, heater blows cold air unless driven at high speed, please help. The problem persist. Optimize fleet uptime and compliance via mobile vehicle repairs, Partner with us to simplify and scale fleet maintenance, Over 25,000 topics, from beginner tips to technical This can affect the heater’s output. document.write(new Date().getFullYear()) The thermostat’s job is to bring the engine to operating temperature in a timely manner. If your car is not blowing warm air into the cabin and the coolant level is fine, then you could have an issue with your heater core. The AC on my 2008 2.0 L turbo now only works when I am driving at speeds of at least 30 MPH. It will only give me heat after car is warm,if I use the auto shift,and drop to 5th gear and increase the rpm,then it will give me heat. Put a sock around the radiator neck to keep coolant from flying all over the place. When driving at slower speeds or idling, the AC blows warm air. Then check the heater control valve and see if its opening up when the temperature is at operating temperature. What happens if you drive your car with a tire pressure of 10 pounds? I changed the thermostat, then the heat would blow hot/cold/hot/cold, I didn't realize you had to bleed the air out of the system after changing the thermostat. The heat also doesn't work unless I am going over 35 mph. Courtney Says, “My 2003 Buick Century heater works fine while accelerating but as soon as I release the gas the air begins to cool, swiftly.” Not enough information is leading to guesses. the fan may work on high speed but not at all at lower speeds causing loss of airflow through the heater when the vehicle stops. Do this a 3-4 times - pausing for a bit between each throttle blip. It sounds like the engines thermostat is stuck open, when you idle the engine has little air over the radiator so the heater will work, but when you are driving lots of air and the engine runs cold. Rev the motor to 2,500 rpm and watch the radiator coolant for air bubbles. 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