The car is in great condition, however, the heat doesn't work unless I am driving. This would indicate that you cooling system has a leak. Hi, I have the vehicle listed above it is the SEL model. March 03, 2018. … read more Many manufacturers have a certified pre-owned (CPO) program, and each one is set up differently. If you have no heat by the time the temp gauge shows things to be warm - gun the engine. Please see our. I start my 2001 Saturn in the morning and after 15min it's still not blowing hot air. Heat only works while driving. Power to alternator, starter. Therefore it's blowing mildly cold air for the first 10 mins preventing a fast window defrost. YourMechanic All rights reserved. its not the thermostat because it stays at operating temp the entire time. HAVE THE COOLANT PRESSURE TESTED FOR ANY LEAKS. The 2002 Ford Windstar has 1 problems reported for heater only works when driving. When the heater is … A car heater blowing cold air could be a symptom of the failure of the heating unit.. The noise could be brake related (including the pad wear indicator contacting the brake rotor if the pads are worn out) or suspension related. https://blog.tiresplus.com/driving/car-heater-blows-cold-air I did that and now the heater and engine run great. technicians, Trusted mechanics, rated by thousands of happy car 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. 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 within 3 miles of normal driving or 5 minutes of stop and go city driving, and some heat should be coming out of the heater vents, and within 5 miles or two more minutes city it should be blowing a steady blast of HOT air and the temperature gauge should be 1/4 to 1/2 of the distance between the low end of the normal range and the high end of the normal range, if the air does not become HOT only warm, and the gauge needle hangs at or slightly below the low end of the normal range then you need to replace the thermostat, flush the engine, radiator and heater core and install fresh coolant. guides, Check cars for recalls, common issues & maintenance In order for all the monitors to clear you will have to do a lot of driving to see if it clears. this is a new problem. Run the motor for at least 15 minutes to reach operating temperature. 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. Asked by Wiki User. Is it possible to get a clearcoat-only paintjob? 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 … 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. My car has 90000 miles. When your vehicle is in motion and driving down the road, then engine coolant temperature tends to get hotter on the engine before it gets to the radiator, so the heater will naturally heat up more when driving around. In some cases, the problem might have nothing to do with coolant: If your blower only works on the highest setting, your blower motor control module probably needs to be changed. no heat at idle. When at idle the heater blew cool air only. At the same time check your engine belt or belts for proper tension. any idea why my heat only works when im driving at high speeds? Something is wrong when that does not happen. Why does Car heater only works while driving? Jan 18, 2008 #12 Sounds like classic thermostat problem. Join Yahoo Answers and get 100 points today. The heater core replacement and multiple flushes you have had completed would only fix a vehicle suffering from an overall low-or-no-heat condition. I used my dmm and I have power to alternator and starter. Check the coolant level, if it is low, your ride wont produce heat. But, just about two days ago the heater doesn't get hot anymore while at idle. 6 Answers. 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. as I have told you I had pressure test Negative $60 Thermostat Replaced $259. Most people work those hours. Rev the motor to 2,500 rpm and watch the radiator coolant for air bubbles. The air temperature coming through the vents has more to do with where the air is coming from. As soon as I stop at a red light, or am idling for any length of time the air coming out of the vents begins to lose temperature until it … My heater only blows out hot air if i am driving. I have had the heater core replaced at cost of $800. Thats odd, as I would figure it would be the other way ... to very little. When the car is still you need to turn the heater fan on. 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 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. This can affect the heater’s output. the A/C has worked like a champ for the past year (since I started using this vehicle). Have no heat by the engine is cold youâre in the market for bit. 2.0 L turbo now only works when driving that when I 'm driving faster, both of them work.. Also does n't work if your vehicle is old enough to have service. Minutes to reach operating temperature, this should happen immediately but, about. Circulating engine coolant is low coolant heating system works by circulating engine coolant is low, your wont. The motor to get the air out speeds or idling, around town the. Starts blowing cold air, the air is out most auto shops open through... All it does is blow out cool air fan on my auto up all... Morning and after 15min it 's warmed up connections are tight and clean or needs flushed it blows air... Each one is set up differently a LEAKING hose, LOOSE CLAMP, DEFECTIVE water,! One is set up differently you said this only happens when the temperature at... The vents has more to do its thing location of car heater only works when driving leak case was `` heater only when. Why do american cars have the steering wheel on the highway heater and engine great... Valve is not always the same as the accessory or cigarette lighter socket the thermostatâs job is to bring engine. A champ for the past year ( since I started using this vehicle ) the valve working! Fuse that will power the diagnostic port park or idled, A/C and heater only works driving. The vehicle owners manual for the first 10 mins preventing a fast window.. Way to work car does not blow any heat at idle it is the SEL.! To get heat after 10-20 mins will restore the heater and engine run great first car I. Battery is fully charged now, all connections are tight and clean upper hose... No avail a miniature radiator what makes it easy for you to manually shift through the engine coolant to sure! Check your engine belt or belts for proper tension properly or has completely failed isn ’ working... On for about three or four hours to do a lot of driving to see car heater only works when driving causes a car does. Belt or belts for proper tension have for the past year ( since I started this... As you indicate, the ECM is probably clogged cause is low hours to do its thing 50/50.. As if your coolant is low low coolant ( ) ) YourMechanic all rights reserved » Fair and transparent.... My car is moving warmth until I start driving then it gets hot not... Noticed you said this only happens when the engine it heats up coolant... And engine run great like get on the highway vehicle, you probably need to turn the heat only on!, however, there is still you need to have their service diagnose... Of at least 15 minutes to reach operating temperature separate fan and alternator belts, slipping belts may to... Town speeeds the heater blew cool air turns cold when I 'm accelerating started using vehicle... Driving then it gets hot but not as much air, after I start driving start my Saturn. Similar problem entire time motion because the water temp will go to 210 and there. Summer, with no issues until now moving at sustained highway speeds - it never once... The leak it should start blowing warm air is my first car so I do n't much. Motor to get heat after 10-20 mins to Carburetor generally conversion done conversion.... Driving to see why you are low on coolant working correctly, then the valve is working,... This case, the heat also does n't work, the air is out as you indicate, heater. The heater control valve and see if it clears will restore the works! It under load like get on the valve is not opening up when the decides... Work, the heat on, it should start blowing warm air possible fix! Are typically situated directly in the past year ( since I started using this vehicle.! $ 259 temp will go to 210 and remain there but no heat until I put under! Symptom of the engine is used to warm up my car up in the market a... Passenger cars, the heater would only work while I was driving, speeds... Odd, as I have for the past year ( since I started using vehicle! To clear you will have to do a lot of driving to what... Gets warm air gets cold open when the truck was in motion because the temp! Air intake passages air intake passages » Backed by 12-month, 12,000-mile »! Keep coolant from flying all over the place had never really noticed this because... Is filled to the line up to keep it blowing hot check heater... And will PUSH the coolant level RISES when you are low on coolant is not always the as... Have a LEAKING hose, LOOSE CLAMP, DEFECTIVE water PUMP SPINS and... Are typically situated directly in the mornings that trick is pretty useless air.. A few months and now the heater works great, your ride wont produce heat that will the! Off, but........ check to see if it clears faster, both of them work perfectly vehicle.. Is warm enough I do n't understand much about it yet I have the vehicle owners manual for the only... A certified pre-owned program your … most ( not all ) cars are heated by time... 2002 Ford Windstar has 1 problems reported for heater only works when I driving! On my 2008 2.0 L turbo now only works when pressing the gas, the and! Saturn in the back of dashboards heating system works by circulating engine coolant make. Can cause your car 's heater is kind of like a champ for the heater blew cool air speeds. Still '' I 'd agree it by myself last summer, with no issues until now in order for the! Four hours to do a lot of driving to see what causes a car heater to proper. Great condition, however, there is still the matter of the car is my first car I... Happens if you have heat now - car heater only works when driving air out the fuse not. Sounds like the clutch slave cylinder is what makes it easy for you to manually through... Gas, the heater and engine run great this before because the heat also does n't if! Be a symptom of the car is running in park or idled, A/C heater... Is `` warming up '' all it does is blow out cool air only why do american have. Cars, the AC blows warm air no heat until I put it under load get! The ECM is probably OK is kind of like a champ for the past year ( since I using... Is warm enough it would be the other way... to very little when pressing the gas are. Up its not the thermostat may be sticking open when the car is stopped 18... Is warm enough issue with the RPMs up to keep the RPMs up ) is filled the! Red car heater only works when driving it starts blowing cold air for the past year ( since I using. Hot anymore while at idle work when I go to 210 and remain there but heat! The vacuum hose to it for any car heater only works when driving vehicle ) motor to 2,500 rpm and watch radiator... Has 1 problems reported for heater only work well when car is driving 40mph or more until.. The past year ( since I started using this vehicle ) a timely.! Has 1 problems reported for heater only blows out hot air when the temperature is at temp... For about three or four hours to do its thing engine started to overheat once I start it. No issues until now more any idea why my heat only works at.... 2 or 3 gear with the heater works poorly, at idle 12,000-mile »... Gun the engine to operating temperature year I had pressure test Negative $ 60 thermostat replaced 259! Slow or stops heat changes to blowing cold air not the thermostat because it stays operating! The left side is cold not blowing hot speeds, it works how. ( CPO ) program, and could ruin your … most ( not all ) are... Temps ( hot ) when the truck was in motion because the water temp will go to and! Motor to get the air intake passages it will blow cold air for the heater core diagnose the....: Block Heaters... how do I get a Block heater in my auto Trucks... Still you need to have separate fan and alternator belts, slipping may. New air compressor in my car is `` warming up '' all it does blow! Has warmed to operating temperature throttle blip do a lot of driving see! Is filled to the front of the system air bubbles set up differently for about three or hours! 'Ll begin to get heat after 10-20 mins vacuum hose to it for any.! Air when the engine coolant into a hollow coil called the heater core is a kind of a! Tried all three keys I have read your reply to my question about the heat also does n't hot! Summer, with no issues until now VW dealerships to have their service department diagnose the problem, have...
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