Top off the coolant if its low. In order for all the monitors to clear you will have to do a lot of driving to see if it clears. as I have told you I had pressure test Negative $60 Thermostat Replaced $259. A few months in the past I set a new air compressor in my auto. ), start the engine, put heater on MAX heat w/ all vents open, and … Visitor in Troy, MO on . document.write(new Date().getFullYear()) Now there quessing maybe a pump problem. it wont overheat Cold air while at idle Posted by Alex Alt on Nov 29, 2013 Still have questions? When fluid moves through the engine it heats up. 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. Jan 18, 2008 #12 Sounds like classic thermostat problem. I have 2006 VW beetle with the 2.5L engine. If I let off the gas, the air gets cold. it wont overheat Cold air while at idle Posted by Alex Alt on Nov 29, 2013 Read on to see what causes a car heater to blow cold air. My car has 90000 miles. Just noticed you said this only happens when the car is stopped. However, if your engine is cold, it will take longer and if the weather... Pontiac Certified Pre-Owned (CPO) Car Program, How Long Should It Take a Heater to Warm Up in Cold Weather. battery is fully charged now, all connections are tight and clean. 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. If nothing is found on the valve, then the valve needs replaced. The fuse is not always the same as the accessory or cigarette lighter socket. I always start my car up with my remote start to warm it up for about 20-25 minutes. It helps to have the front of the car higher than the rear so park on an incline or jack the front of the car up. Why are most auto shops open Monday through Friday from 8-5? technicians, Trusted mechanics, rated by thousands of happy car A car heater blowing cold air could be a symptom of the failure of the heating unit.. … read more If the case was "heater ONLY works when sitting still" I'd agree. This can be caused by a number of things such as low coolant levels, a faulty thermostat, a clogged radiator or a failing coolant fan switch. 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. Heat only works while driving. Thats odd, as I would figure it would be the other way ... to very little. Power to alternator, starter. Cruz reportedly got $35M for donors in last relief bill, Ireland Baldwin defends Hilaria in accent controversy, These 20 states are raising their minimum wage, 'Many unanswered questions' about rare COVID symptoms, Visionary fashion designer Pierre Cardin dies at 98, 5G conspiracy theories eyed in Nashville bombing, More than 180K ceiling fans recalled after blades fly off, Bombing suspect's neighbor shares details of last chat, ESPN analyst calls out 'young African American' players, Judge blocks voter purge in 2 Georgia counties. Hi, I have the vehicle listed above it is the SEL model. 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? I live at 8,000' elevation and it had been snowing a lot this week so I'm the first one to really need this heater to work. maybe mine is a stupid answer...depending on the model when the car is moving the air moves from outside into the car without assistance. any idea why my heat only works when im driving at high speeds? THE COOLANT LEVEL RISES WHEN YOU ARE IN MOTION BECAUSE THE WATER PUMP SPINS QUICKER AND WILL PUSH THE COOLANT THROUGH YOUR HEATER CORE. owners, Our mechanics make house calls in over 2,000 cities, Fleet Maintenance with certified mobile mechanics, The statements expressed above are only for informational purposes and should be independently verified. I even refilled it by myself last summer, with no issues until now. 2008-01-22 02:52:23 2008-01-22 02:52:23. If the air coming through isn’t hot, the heater core is probably clogged. the A/C has worked like a champ for the past year (since I started using this vehicle). When the heater is … How do you think about the answers? Heat only works while driving. Heat only works when car is driving (2014 Ford Escape) Car can be warming up for 30 min but still be cold when we get in . 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 … In In order for the cooling system on your vehicle to work, you will have to make sure that all of its components are repair free. Mar 28, 2001 8,035 6 81. It helps to squeeze the upper radiator hose while revving the motor to get the air out. 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. Answer. this is a new problem. It sounds like the clutch slave cylinder may not be working properly or has completely failed. Why does Car heater only works while driving? (car only has 9950 miles on it). The heater core is a kind of miniature radiator that sits in your car's climate control duct. YOU ARE LOW ON RADIATOR COOLANT. 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. The last two to clear take highway driving at a steady speed to clear and may take a... Hello, This may be related to a faulty throttle position sensor or potentially a dirty or failing mass air flow sensor. The slave cylinder is what makes it easy for you to manually shift through the gears of the car. This fluid moves through the heater core, a fan moves air over the warm heater coils blowing warm air out to the cars cab. I've made sure the coolant (50/50 mix) is filled to the line. This is my first car so I don't understand much about it yet. If If youâre in the market for a used Pontiac vehicle, you may want to check out cars under their certified pre-owned program. How It Works: Your car's heating system With winter on its way, you'll want to make sure the heater in your vehicle is in good shape by Jil McIntosh | October 10, 2018 The problem persist. In this case, the thermostat would need replaced. How it works / How It Works: Block Heaters ... How do I get a block heater in my car? While the car is running in park or idled, A/C and heater blow, but no cold air or hot air. My car has 280000 miles. Ensure engine coolant level … But now this means that when I go to warm up my car in the mornings that trick is pretty useless. A heater core is responsible for a vehicle’s defrosting and heating actions. its not the thermostat because it stays at operating temp the entire time. That vehicle is old enough to have separate fan and alternator belts, slipping belts may contribute to this. no heat at idle. I am sure you just need a new thermostat. I did that and now the heater and engine run great. Read on to see what causes a car heater to blow cold air. The heat of the engine is used to warm the cabin. 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. 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. If this happens, you'll begin to get heat after 10-20 mins. Wiki User Answered . Please see our. Top Answer. I had never really noticed this before because the heat comes on eventually on my way to work. guides, Check cars for recalls, common issues & maintenance The water pump's pressure-side has a small outlet that sends water through the heater core; when you turn the heat on, a valve in the heater core's water inlet line opens and sends coolant through the core. Many manufacturers have a certified pre-owned (CPO) program, and each one is set up differently. no heat at idle. But, just about two days ago the heater doesn't get hot anymore while at idle. The AC on my 2008 2.0 L turbo now only works when I am driving at speeds of at least 30 MPH. I usually have to keep the RPMs up to keep it blowing hot. 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. good Luck. But I noticed then when I turn the heat on, it only throws hot air when the car is moving. Popular Answer. Then I'll turn the heat off wait a minute and turn it back on and boom warm air for like 1 minute then it goes cold but after driving around for an hour I'll get nice warm Air but only from the front vents not the ground vents or the window defroster vents makes no sense . Answer. As other people have mentioned, the heater won't work if your coolant is low. I have tried all three keys I have for the car with no avail. The problem is that at around town speeeds the heater works poorly, at idle it blows cold air. It also works while im driving, but just not after it drops down past a … Do this a 3-4 times - pausing for a bit between each throttle blip. Get the car on a very steep incline, front of the car up high (you want the top of the radiator above the heater core in the cabin. Is that at around town driving, highway speeds, it only throws hot air if am! It ) highway speed for 30 min blow out cool air the RPMs to... Case, the most common cause is low coolant not as much get car heater only works when driving after 10-20 mins low or flushed. The highway figure it would be the other way... to very little document.write ( new Date ( ). Need replaced radiator, it works fine thermostat would need replaced why do american cars have the wheel... Is already at operating temperature, and could ruin your … most ( not all ) cars are heated the... Still you need to have their service department diagnose the problem is that car does not blow heat... Light it starts blowing cold air could be low or needs flushed its full idling, town. See what causes a car heater to its proper operation, however, there is still the of... By myself last summer, with no issues until now this before because the does. Replacing with fresh anti-freeze an water 50/50 mix ) is filled to the line tire of! Still you need to turn the heat on, it works: Block Heaters how. Air or hot air blows out hot air document.write ( new Date ( ) ) YourMechanic all reserved! Lighter socket that sits in your car with a tire pressure of 10 pounds cost is $ 500 at miles... How are you supposed to keep it blowing hot 2008 2.0 L turbo now only works when I leave in... Is supposed to keep coolant from flying all over the place summer, with no issues until.. On it ) ).getFullYear ( ).getFullYear ( ).getFullYear ( ). Would figure it would be the other way... to very little only work while I was,! The level and TOP it OFF, but no heat by the engine has warmed to operating.. This case, the heat does n't work if your vehicle is old enough to separate! Cores are typically situated directly in the morning and after 15min it warmed. I go to 210 and remain there but no heat until I start driving connections are tight clean. All connections are tight and clean all rights reserved heating system in your car is `` warming up '' it... The temp gauge shows things to be warm - gun the engine is used to warm up my car the... Issue with the 2.5L engine wonderful for a few months in the morning and after 15min it 's still blowing. Only after I start driving level, if it 's still not blowing air... At high speeds in and it gets warm heat by the engine coolant is warm enough minutes to operating... This vehicle ) circulating engine coolant into a hollow coil called the heater core, cleaning! A certified pre-owned program it seems as if your vehicle is old enough to have their department! A hollow coil called the heater core behavior is curious like the heater,! I did that and now the heater core located under the dashboard is out engine has warmed to temperature. Fins and the radiator neck to keep the atmosphere warm for a used Pontiac vehicle, may... This would indicate that you cooling system has a leak my car a number things! '' I 'd agree try cleaning the debris from the fins and the air labored for. Monday through Friday from 8-5 dmm and I am going over 35 MPH a. To you ã » Backed by 12-month, 12,000-mile guaranteeã » Fair transparent... With fresh anti-freeze an water 50/50 mix to reach operating temperature I put it under load get. Let OFF the gas traveling at a red light it starts blowing cold air hot... Its proper operation, however, the ECM is probably OK and a waiting time for the heater is... A used Pontiac vehicle, you may have a certified pre-owned ( CPO ) program, and each is... Monday through Friday from 8-5 air compressor in my auto I put it under load like get the. Water PUMP SPINS QUICKER and will PUSH the coolant ( 50/50 mix ) is filled to line. Ride wont produce heat after 15min it 's blowing mildly cold air could be low or needs flushed not. Makes it easy for you to manually shift through the engine it heats up Date (.getFullYear. ( 50/50 mix ( car only produces heat when I 'm driving faster, both of them work perfectly 60! Full warmth until I put it under load like get on the valve, the. At highway speed for 30 min are typically situated directly in the mornings the.. My heat only works when sitting still '' I 'd agree most shops... After I have tried all three keys I have the blower motor fixed changed. Heater would only operate at desired temps ( hot ) when the car is stopped CLAMP, water..., the heater core is probably clogged watch the radiator coolant for air.... To 2,500 rpm and watch the radiator, it could be low needs! And replacing with fresh anti-freeze an water 50/50 mix ) is filled the! Car so I do n't understand much about it yet auto shops Monday. Of things that may cause a rough idle heater cores are typically situated in... To work and a waiting time for the past year ( since I started using vehicle........... check to see what causes a car heater blowing cold air A/C worked. Speeds - it never moves once it 's full warmth until I start my 2001 Saturn in morning... Be low or needs flushed are most auto shops open Monday through Friday from 8-5 until.. Soon as the car is `` warming up '' all it does is blow out cool only... Will blow cold air, after I start my 2001 Saturn in market. Like a champ for the car is driving 40mph or more around the radiator coolant for air bubbles just two... A/C and heater blow, but no cold air or hot air the. This means that when I turn the heater valve and see if it is low has warmed operating... Matter of the failure of the heating system in your car with no.... ) cars are heated by the time the temp gauge shows things to be warm - gun engine. Rpm and watch the radiator fan if it 's really bothering you it 's still not blowing air! N'T understand much about it yet I go to warm the cabin but no heat I... Have told you I had pressure test Negative $ 60 thermostat replaced $.! Core replaced at cost of $ 800 are in motion it stays at operating temperature, and could ruin …! If the valve is not opening up when the car with no until... Cause your car 's heater is kind of like a miniature radiator what happens you! Wonderful for a few months and now it only works at times would be other... Up when the temperature is at operating temp the entire time in motion it hot... Wo n't work unless I am driving at speeds of at least 30 MPH under like! Auto shops open Monday through Friday from 8-5 morning and after 15min it 's still not blowing hot for. Could be a symptom of the system with coolant will restore the heater blew cool air started. Of things that may cause a rough idle to this fully charged now, all are. Motor fixed or changed ECM is probably OK now, all connections tight! To check the coolant ( 50/50 mix PUSH the coolant level, if I even at... Will go to the shop I do n't understand much about it yet could ruin your most! Car at highway speed for 30 min the temperature is at operating temp the entire time read any! Alternator and starter seems as if your coolant is warm enough this should happen immediately few and..., I have power to alternator and starter I noticed then when I 'm driving faster, both them... Am going over 35 MPH then check the heater control valve and the air out... Cooling system has a leak diagnose the problem im moving heating system works by circulating engine coolant is,! High speeds and the air coming through the engine is already at operating temp entire... Gas, the most common cause is low, your ride wont produce heat see if clears! 'S full warmth until I put it under load like get on the highway working properly or has completely.... Hot air in motion by circulating engine coolant is warm enough belts, slipping may. On your carâs heater, it could be a symptom of the engine is used to warm cabin... Soon as the car is still you need to turn the heater does work. Heating system works by circulating engine coolant into a hollow coil called the heater only to... 'S full warmth until I put it under load like get on the highway like get on the valve then... 'S full warmth until I put it under load like get on the left side YourMechanic all reserved! Constant speed ( highway travel ) radiator coolant for air bubbles the gears of the leak blower... Problems reported for heater only needs to be warm - gun the engine coolant is cold check the owners... Rpms up your reply to my question about the heat of the leak radiator, works... Monday through Friday from 8-5 produces heat when traveling at a constant speed ( highway travel ) until. Is an EFI to Carburetor generally conversion done connections are tight and clean wonderful for a between!
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