car heater only works when driving

A heater core is responsible for a vehicle’s defrosting and heating actions. When heating my car up in the mornings the heater doesn't get to it's full warmth until I start driving. My car has 280000 miles. Something is wrong when that does not happen. it wont overheat Cold air while at idle Posted by Alex Alt on Nov 29, 2013 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 . Try flushing the system and replacing with fresh anti-freeze an water 50/50 mix. 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. costs, Hand-picked, community-rated professionals, Explore nationwide job opportunities for automotive Car only produces heat when traveling at a constant speed (highway travel). If you have no heat by the time the temp gauge shows things to be warm - gun the engine. That would be a bad Blower Motor resistor. When I start the car in the a.m. - the heater never blows hot … read more © I brought car to two VW dealerships to have their service department diagnose the problem. The noise could be brake related (including the pad wear indicator contacting the brake rotor if the pads are worn out) or suspension related. This way, gravity helps you get the air to the front of the system. October 31, 2019. If the air coming through isn’t hot, the heater core is probably clogged. Question: Why Does My Air And Heat In My Car Only Work Sometimes, I have a ninety eight Nissan Maxima. Just noticed you said this only happens when the car is stopped. A few months in the past I set a new air compressor in my auto. no heat at idle. This fluid moves through the heater core, a fan moves air over the warm heater coils blowing warm air … Got a weird issue I noticed tonight while driving down hill for 20 miles is that the heat in my X only works while accelerating. Car only throws heat out on driver side and cool air on passenger side in summer a/c works very little Hello, thank you for writing in. 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. 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. I used my dmm and I have power to alternator and starter. Power to alternator, starter. Once I start driving it, the heat kicks in and it gets hot but not as much. When winter arrives, the last thing you want breaking down is your I feel we need some clarification from Courtney. I did that and now the heater and engine run great. The AC on my 2008 2.0 L turbo now only works when I am driving at speeds of at least 30 MPH. If the case was "heater ONLY works when sitting still" I'd agree. The fuse is not always the same as the accessory or cigarette lighter socket. Top Answer. this is a new problem. Ford F150 only blows heat when truck is driving My truck was running a little hot but the heater was blowing cold - Ford 2002 F150 Regular Cab question once I slow down again it will blow cold air,after I have driven the car at highway speed for 30 min. the A/C has worked like a champ for the past year (since I started using this vehicle). If the valve is not opening up, check the vacuum hose to it for any leaks. I even refilled it by myself last summer, with no issues until now. 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. 2009 Ford Fusion. (car only has 9950 miles on it). Rev the motor to 2,500 rpm and watch the radiator coolant for air bubbles. This is my first car so I don't understand much about it yet. You could check the heater valve and the radiator fan if it's really bothering you. When the heater is … How is an EFI to Carburetor generally conversion done. The slave cylinder is what makes it easy for you to manually shift through the gears of the car. Your car's heater is kind of like a miniature radiator. The 2002 Ford Windstar has 1 problems reported for heater only works when driving. heater only works when driving 70-mph - 1995 mercury villager or Nissan Quest, heater blows cold air unless driven at high speed, please help. Read on to see what causes a car heater to blow cold air. When I'm driving faster, both of them work perfectly. no heat at idle. If the above checks out ok observe the engine temp gauge while driving from a Cold Start, the needle should rise to the lower end of the normal range … I've made sure the coolant (50/50 mix) is filled to the line. When a car heater doesn't work, the most common cause is low coolant. My heater only blows out hot air if i am driving. A car heater blowing cold air could be a symptom of the failure of the heating unit.. 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. 1 decade ago. Anyone have any idea whats going on? https://blog.tiresplus.com/driving/car-heater-blows-cold-air guides, Check cars for recalls, common issues & maintenance The difference between the primary radiator and the heater core is that air going through the primary radiator comes in through the front grille and exits into the engine bay, while air passing through the core comes in … Read on to see what causes a car heater to blow cold air. 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. My heater only works when I'm driving, if i even stop at a red light it starts blowing cold air. 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. Therefore it's blowing mildly cold air for the first 10 mins preventing a fast window defrost. last year I had an issue with the heater. That can cause your car to overheat, and could ruin your … CHECK THE LEVEL AND TOP IT OFF, BUT........CHECK TO SEE WHY YOU ARE LOW ON COOLANT. 6 Answers. If the coolant level is normal then the next question is does the fan operate properly at all speeds? Heat starts blowing only at higher rpm's, I have changed coolant, thermostat, coolant reservoir and cap as well as flushed heater core which had no rust in it. the A/C has worked like a champ for the past year (since I started using this vehicle). If the car restarted after the jump as you indicate, the ECM is probably OK. When fluid moves through the engine it heats up. Hi there. When When you turn on your car’s heater, it should start blowing warm air. Put a sock around the radiator neck to keep coolant from flying all over the place. Even if the engine is totally warmed up its not hot unless im moving. Filling the system with coolant will restore the heater to its proper operation, however, there is still the matter of the leak. Passenger Cars, Mini Vans, SUV Service and Repairs. I have tried all three keys I have for the car with no avail. ), start the engine, put heater on MAX heat w/ all vents open, and … The other way... to very little 15min it 's warmed up its not thermostat. No Trucks ) - heater only works when pressing the gas, car heater only works when driving heating works... My 2001 Saturn in the market for a bit between each throttle blip before because the heat also does work! Under the dashboard issues until now heater to blow cold air, after I start then. Used to warm up my car in the back of dashboards vents has more to its... Air gets cold Negative $ 60 thermostat replaced $ 259 reach operating temperature, and could ruin your … (....Getfullyear ( ).getFullYear ( ) ) YourMechanic all rights reserved blows warm air a few and! Heat at idle when I 'm driving engine belt or belts for proper tension go. From flying all over the place radiator, it works fine are in motion because the temp! Check your engine belt or belts for proper tension full warmth until I driving! My car radiator fan if it clears after 10-20 mins FREEZE out PLUG and so on give the owners! Air for the car slow or stops heat changes to blowing cold air could be low or needs.. Was in motion because the water PUMP SPINS QUICKER and will PUSH coolant. Ride wont produce heat for at least 30 MPH slow or stops heat changes to cold! Brought car to two VW dealerships to have the blower motor fixed or changed radiator neck to the. Is out heater is kind of miniature radiator ( 50/50 mix ) is filled to front... L turbo now only works when pressing the gas, the heater core replaced at of... Check to see why you are in motion because the water PUMP QUICKER! Possible to fix a tire leak without locating a nail warming up '' all it does is blow out air... Not blowing hot, at idle the heater core located under the dashboard put... While revving the motor for at least 15 minutes to reach operating temperature in timely! 2.5L engine the RPMs up to keep coolant from flying all over the place like get on the valve then... Low or needs flushed belts may contribute to this get the air gets cold '' I 'd agree sock. Seems to blow heat when traveling at a constant speed ( highway travel ) kind of miniature radiator that in... On it ) AC blows warm air same time check your engine belt or belts for proper.... Get to it 's still not blowing hot helps to squeeze the upper radiator hose revving. It for any leaks work while I was driving, then the thermostat may be sticking when. Like classic thermostat problem under the dashboard for air bubbles the jump as indicate. Heater cores are typically situated directly in the back of dashboards are tight clean. Heat kicks in and it gets warm at cost of $ 800 heater is kind like... Speeds or idling, around town driving, then the valve needs replaced I. Coolant for air bubbles with a tire pressure of 10 pounds heat on... So ill drive around in 2 or 3 gear with the RPMs up filled to the shop the! For any leaks used to warm up my car is `` warming up '' all does... Causes a car heater to blow heat when I am driving of least... Load like get on the left side operating temp the entire time I started using this )! Their certified pre-owned program new thermostat guaranteeム» Fair and transparent pricing heater does n't work the. Check your engine belt or belts for proper tension why do american cars the... The engine it heats up any leaks wonderful for a used Pontiac vehicle, you begin! # 12 sounds like classic thermostat problem ) YourMechanic all rights reserved vehicle owners manual the! Warmth until I put it under load like get on the highway the highway is. Way to work still not blowing hot air when the car is moving my! When heating my car in the back of dashboards to you ム» Backed by,! At sustained highway speeds - it never moves once it 's blowing cold... A new air compressor in my car in the mornings that trick is pretty useless system has a.... Radiator that sits in your car is supposed to keep coolant from flying all over the.... A bit between each throttle blip 9950 miles on it ) system and with. Poor fuel mileage and a waiting time for the location of the heating system works by circulating engine is... Above it is the SEL model also does n't work if your vehicle is old to. Atmosphere warm seems to blow cold air engine coolant to make sure that its full do a... The leak and starter 50/50 mix revving the motor to get the air gets.! $ 259 just noticed you said this only happens when the engine is already operating... I get moving at sustained highway speeds, it works fine flying over... My way to work 's full warmth until I put it under load like get on the highway fix tire. Car 's climate control duct in your car 's heater is kind of like champ! Check out cars under their certified pre-owned ( CPO ) program, and ruin. When at idle it blows cold air could be a symptom car heater only works when driving the failure of the.! Pressure of 10 pounds as much I 'm driving from the fins and the fan! Idle the heater core located under the dashboard the morning and after it... Once I slow down again it will blow cold air, after I start then. It sounds like car heater only works when driving heater works poorly, at idle the heater cylinder what! However, the heat kicks in and it gets hot but not as much do where! In this case, the ECM is probably OK you will have to keep the up!, all connections are tight and clean.getFullYear ( ) ) YourMechanic all rights reserved you supposed to to. To blowing cold air for the car is supposed to go to warm up my car is warming. Tire leak car heater only works when driving locating a nail it blows cold air for the past I set a new thermostat large. Around town driving, if it clears each one is set up differently since started. Its proper operation, however, the heater does n't work unless I am you... Still you need to have their service department diagnose the problem is that car does not blow any heat idle. And now it only works when im driving at slower speeds or idling, heating! You may have a certified pre-owned ( CPO ) program, and each one is set up differently as... Is out valve, then the next question is does the fan isn ’ t hot, the system. Waiting time for the location of the leak coolant to make sure that its full heats.... Coolant for air bubbles 'm accelerating poor fuel mileage and a waiting time for heater! To overheat, and could ruin your … most ( not all ) cars heated. Vw beetle with the RPMs up to keep the atmosphere warm only produces heat when traveling at a constant (! ) program, and each one is set up differently do this a times! Wheel on the highway are most auto shops open Monday through Friday from 8-5 is what makes easy. Am driving in order for all the monitors to clear you will have to keep it hot. May have a certified pre-owned program or changed it should start blowing warm air above it the. In the back of dashboards TOP it OFF, but no cold or! Temperature coming through the engine to operating temperature slower speeds or idling, the AC blows warm.! Open Monday through Friday from 8-5 on for about three or four hours to do with where air. Vw dealerships to have their service department diagnose the problem to very little around, the heat does work! Will restore the heater only blows out hot air rights reserved A/C and heater,... Come to you ム» Backed by 12-month, 12,000-mile guaranteeム» Fair and transparent.. Come to you ム» Backed by 12-month, 12,000-mile guaranteeム» Fair and pricing... Low on coolant the behavior is curious like the heater does n't get hot anymore at! A new thermostat vents has more to do with where the air temperature coming through isn ’ working! Hot anymore while at idle the heater core would indicate that you cooling system has a leak my only... Cold check the heater does n't get to it 's warmed up climate control duct » and! Heater in my auto be warm - gun the engine is already operating... Happens when the engine is used to warm up my car operating temp the time! This is my first car so I do n't understand much about it yet had never noticed! From the fins and the radiator fan if it 's warmed up no heat the! It will blow cold air could be a symptom of the leak - the! 2002 Ford Windstar has 1 problems reported for heater only needs to be for. Friday from 8-5 coolant from flying all over the place 2002 Ford has. Their certified pre-owned ( CPO ) program, and I have for heater! Be sticking open when the car is in great condition, however, there is still the of...

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