It. At this point, the blower motor blows air across the it and the newly heated air blows on to the driver and passengers. 2° C (144° F) If the floor outlet air temperature is too low, Both of the heater hoses should be hot to the touch. Low coolant: Whether caused by a leak or water evaporation, low coolant is the most common source of poor heater output. Air is blasted to dislodge all dust and debris within the furnace and fan compartment, with. Now it seems to only be blowing luke warm air out the vent when turned to full hot. The front unit blows hot air and the rest unit blows cold. i have a 99 ford escort. 3. I have a 2010 ford fusion. the fluid heats up the heater core which is made of metal. Browse Categories Answer Questions . Recently noticed in my wifes 99 5. Temp gauge went to max hot after about 3 miles and. This is my best guess with out knowing the year of the vehicle. Join Date: Sep 2010. This article applies to the Ford F-150 (2004-2014) and F-250 (2005-2014). High School Diploma. Associate Degree. The first thing to check is the heater core , to see if its plugged up ,, start the engine up and let it run for 15 min to get the engine warmed up ,, then open the hood and find the two heater hoses that go to the heater core on the fire wall,, put your hand on both hoses to the heater core as close to the fire wall as you can ,,, feel there tempiture ,,. next, you may have a malfunction in the direction door the directs the air flow in the dash. Even when the contol knob is turned all the way to hot it - Answered by a verified Ford Mechanic. Hi All, I have been reading that a lot of people have problems with the KA heater always blowing hot even when on cold. 1 answer. Simply flip the thermostat setting back to “cool” and see if the air conditioner begins to blow cool air. gonzalez0828; Oct 15, 2023; 3rd Gen - 2007. A Leak in the A/C System. This fan should turn on within a minute of the AC system being switched on. 2001 Ford Escort ZX2; Ford Escort Car and Truck. When i first bought my truck it blowed out hot air. 2001 GMC Yukon. SOURCE: ford ka heater blows hot air all the time. Normal temp reading on the gauge. then with the key on turn the heater from hot to cold and see if the motor arm moves, if it does the socket it sits in to turn the door will be broken. The front heater only blows warm air, while the rear heater blows hot air. 7L Ecoboost. There are no blown A/C fuses. Solution: Top up the coolant and see if it helps. Heater blows cold air at idle. . Less common causes are clogged expansion valve or. Most furnace fans have three settings: On, Off, and Auto. Car died and wouldn’t start again or if it does it runs roughly for a few seconds then dies; Speedometer stopped. As it idles the heater blows out cold air when I accelerate it stays warm as long as its being accelerated. Lots and lots of posts on this issue, use the. Took out the ac box and replaced the heater core, evaporator. If the heater core is staying cool then you have a blockage in the cooling system or an air pocket. You can usually diagnose and fix the problem yourself in about an hour. When you are in AUTO, the climate control system will not turn on the blowers until the engine is warm enough to provide warm air. 2° C (126° F) 56. Browse Categories. 1 answer. 2004 Ford F150. the heater is blowing cold, then hot, then cold, then hot air intermittently. Installation is the reverse of removal. You have to replace the valve and possibly the control head. Ford Explorer; Ford Escort;air condition/heater any setting for cold air blows cold then hot then cold then hot then blows all hot - Ford 2001 F150 Styleside SuperCrew question. Changing set points on limit switch does not seem to change pattern. #3 Clogged Filters (Not Dirty) Can Cause AC To Start Blowing Warm Air. Took it to CarX and they said the same thing, but wanted way too much to fix it. 2004 - 2008 Ford F150 - Heater blowing warm not hot - First time post so hopefully I get all the info for someone smarter than me to help resolve this issue. read more. But even if you swap the air filter with a brand new one, dirt and debris can still be found within the unit. If you can get cold air blowing out the front vents, the front heater door is not working properly. This problem is rarely (very rarely. If still no luck then. mechanic. FORD AC AIR CONDITIONER DOES NOT WORK BECAUSE OF BAD AC PRESSURE SWITCH. check antifreeze fluid level. HEAT BLOWSCOLD AIR WHEN IDLING ONLY GETS HOT WHEN START DRIVING. If I turn it back up to 73 deg F it is back to warm, almost to hot air. Report. If both are not hot, you may have a thermostat sticking open. Turn your temperature dial from cold to hot while looking at the shaft. Subwoofer box installation. How long have you had this problem? Few months . #1 Low Refrigerant Levels Are The Cause Of AC Blowing Warm Air. 0 IMG_1895. THe compressor needs to be running and the low side pressure should be cycling in the green area of the gauge. 2. No smoke out of exhaust, no antifreeze in oil, no obvious loss of power. > Forum > Tags. Water flows through heater core freely, pored in with a gallon of distilled water comes right out. Yesterday, (ice-cold weather) my 1999 Lincoln Continental heater started blowing cold air, then hot air, then cold air. Try recalibrating the heating system or replacing the blend door. 1. Furnaces require a steady supply of gas to the burners to generate heat. P. 2008 Ford F-250 Super Duty 40,000 mi, Visitor. Make sure they are both very hot. I had a leaky compressor on a '91 Ford Escort GT. Search Fixya. The hot air that was blowing out the vents was because the cabin temperature was lower than the set temperature of the climate control. December 31, 2017. All you have to do to get the air out of the top of the radiator is to temporarily remove the "vent hose" from the top of the radiator, wait until coolant emerges from the opening, and then replace the "vent hose". . I did notice the temp guage fluctuates quite a bit. If you want fan to be off you must select OFF on Vent control, then fan will turn off. If the heater has stopped working in your Escape, this process has failed in one way or another. On Super Bowl Sunday, I removed the Radiator Cap on my 96 Explorer and of course water came GUSHING OUT!! !. Dcrymes99ranger: 3. Posted on May 30, 2010. If you had a problem with the heater controls your lack of heat would not be symptomatic of engine speed. My car has 197000 miles. Here is why your Ford F-150 or Super Duty's vent is only blowing hot or cold air. 1999 f150 4. Occasionally it will blow out luke warm air when highly. About 15 minutes after driving the diver side vents start blowing straight cold air but the. Apr 12, 2009 • 1997 Ford F150 Regular Cab. Heater blows cold air while vehicle is in Park even after idling 20-30 minutes. 6L a few years ago,the heater core went out. Go into the breaker panel and switch off the breaker for both the outdoor and the indoor unit. The heater may stop working in Ford F-350 Super Duty due to low coolant level or air in the cooling system, clogged heater core, bad thermostat, faulty blend door actuator, bad water pump, dirty cabin air filter, bad blower motor, or HVAC control unit malfunction. When I turn it back to cold it then blows cold like it. They both should feel warm or hot to the touch with the engine on. Find the leak, replace the part/seal, evacuate and recharge - good as new. The heater is blowing hot air then cold air. #1 · Apr 9, 2012. Sometimes the a/c button will turn on. Run the engine at 2000 rpm for 5 – 10 minutes to help move trapped air. If you get on the throttle, blower airs gets warmer within seconds. The furnace might have overheated, or there could be an issue with the thermostat, air filter, pilot light, flame sensor, ducts, condensate line, or gas supply. You may just be low on Freon. I bought this truck from a guy in nebraska. i hav water going into and coming out of heater core with both lines hot! an. As I said, the dealers tell me that there is a switch that get stuck on cold. It stabilized in green fluctuating but stayed in the green. A neglected filter can cause a furnace to blow cold air because it overheats and tries to cool itself by blowing cool air through the ducts and into the home. The AC usually blows extreamly cold and works great, however sometimes it will start to blow warm. the heater in the car blows out cold air,. The reason the AC needs to be recovered is because the heaterAC box will be removed from the vehicle. read more Check the heater hoses going into and coming out of the heater core. Ford F-150 heater not working - causes and diagnosis; Ford. Blows out Cold on the passenger side and hot on the drivers side. If your furnace looks pretty dirty, call an HVAC provider for a professional clean. The AC runs a little, then it blows hot air. my windows were fogging up,smelled. The heater is only blowing out cold air. Learning to use the forums. If it is set to ON, that may be your problem; switch it immediately. it was blowing out hot air in the vent setting but nothing now. 1997 - 2003 Ford F150 - 2003 5. Low coolant: Whether caused by a leak or water evaporation, low coolant is the most common source of poor heater output. Water pump is not to much of a concern as usually. 2011 Ford Escape. What could of happen that quick?Heater blows cold air I've got plenty of anitfreeze and it still blows cold air and not heat. 1999 Ford Escort;. Run the engine until it reaches normal operation temperature. 2005 mk2 1. Anyway down to business. The major problem is that the Heater Control circuit driving the actuator causes the blend door to try move past the fully HOT position and eventually either breaks the door shaft or as in our case burns out the driver for the small DC motor inside the. The reason it goes cold in MAX AC is that setting closes a vacuum operated valve on the hot water line to the heater core. , Halifax, Nova Scotia, canada. Excellent answers Joe and David. It has always done this. 1 Answer. 2005 Lariet 4X2, 1969 Mustang Mach 1 428 CJ, 2007 Harley Roadking, 173rd Airborne. The heater in my 1999 Land Rover Discovery Series 1 won't blow cold. October 30, 2021. Check the vacum line to the heater control valve. Question type: General. The best thing is you can change the thermostat and then check whether the car heater is blowing hot or cold air. It started blowing. 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 blows cool air. Find solutions to your heater blows cold air idle chrysler 300 question. Ford Model: fiesta titanium tdci. The vents will blow air in a cycle for about 20 seconds during this phase. The air is cool but not cold. The common reasons for car heaters blowing cold air include low engine coolant, broken heater flaps, bad thermostats, and air in the cooling systems. Search Fixya. Jul 06, 2009 • 1998 Ford Windstar. Decelerate. The heater randomly switches from blowing hot air to cool air. There is no heater valve on a 1998 ford F-150. Most of the time no one notices because the evaporator is very cold and for a short time it will continue to blow cold air. Question about 1996 Ford Ranger SuperCab. I added a little coolant this morning, and the air blew hot for a while. installed a new actuator earlier this year and it functions just fine. blows cold - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. try adding some freon. For my Honda vehicles, I could flip through a copy of the service manual and figure. Reconnect original heater hoses and test difference. Seems like the air conditioner has a mind of its own. I have to shut it off and restart it again to get it to blow hot. AC worked one day then was blowing hot on driver side cold on passenger side. OK, this is the root of you're issues. '07 Black ZX3 - Intake and exhaust on SVT suspension. Issue #1: The Blower Wheel. If your edge’s engine gets hot enough, the coolant will begin.