1999 Ford Expedition 4. Good luck. A plugged/clogged heater core. They operate. Blower OK, AC fine. I have 08 f250 6. #1. The 2001 Ford Taurus has 18 problems reported for heater. 4 gas. After that, if the air is still cold, something else likely causes the issue. The ON setting makes the furnace fan blow continuously, even when the heating cycle is not activated. ”. 1° C (133° F) 59. Brand new car,you would think after all this time making cars they would of fixed this in their new models. Air conditioner is blowing out hot air you turn on the knob it blinks 3 x n cut off but it blows out hot air. The compressor cycles properly and the lines from the condensor to the evaporator and from the evaporator to the compressor get really cold so it is not a lack of freon. 1999 Ford Expedition 4. If you have an automatic transmission and it "slips" while you are driving it—that is, the car engine revs without the power going to the wheels—the most common cause (though not. turn heater control switch half way between hot and cold with fan blowing then touch the valve if it is[ pulsing] ticking then faulty 100% sure this is the problemAC started blowing hot air!!!!!!!! I just came back from a trip to Colorado, and it worked fine the entire time. Tags: heater, ford, escort. If it doesn't run at all, then it's the motor. The velocity of the air also raises and lowers when it switches. I have to shut it off and restart it again to get it to blow hot. I bought this last Dec and when the heat was on, the passenger side sometimes blow cold, then hot again. Maximize. Heater blows hot then blows cold then engine runs hot on2006 ford explorer. Select the FLOOR position on the control assembly. 3. During this time the EGR, Purge and Fuel Trim diagnostics will be performed. Tried to recharge high side (bigger tube) but the gauge read full (red area). The blower wheel is the most common cause of a heater blowing cold air. Bought the freon recharge. That should be it. But then starts blowing air that's not cold. F-150 XLT 2. The truck is too new to have bad vacuum lines, but one may have a kink that is causing a. 5 turbo to stuff in a Focus, Ranger or fox body. Just last night my heater started acting up. Not a difficult job. Sometimes the car’s heating system works perfectly, but it still blows cold air. With the vehicle at a complete stop, set the parking brake. The A/C blows cold for about 10 minutes after I start running it, then it goes hot. The water pump pushes hot coolant through heater hoses to the heater core. This is my best guess with out knowing the year of the vehicle. I bled the AC high pressure line. There are many reasons an HVAC (heating, ventilation, air conditioning) system might stop working. Most systems are designed to blow very cold air, between 32 and 40 degrees! These cooling coils, called the evaporator, is where the actual cooling of the air happens. Gardnerville nevada. only put in straight antifreeze, do not mix. Then when i let off or am sitting at a stop or idling it starts blowing cool air like almost a/c cool. then it blows cold. Then step in and start it. Im not getting any heat blows cold air. Here is why your Ford F-150 or Super Duty's vent is only blowing hot or cold air. Check the radiator, it's probably bone-dry. Didn't matter where I set the temperature dial, fan speed, or anything. The AC starts again and is really cold, then it goes off again and blows hot air. I am working in Fahrenheit here. You might get surprised to know that the most common reason the car air conditioner runs cold than warm is MOISTURE. Another method you could try is backfilling the heater core and hose, using the clamp, or a plug in the hose, while you slowly fill the core. When the engine is started in the morning, the AC blows cold but when the vehicle heats up or is driven for a while, it will all of a sudden start to blow hot. Heater blows warm air briefly and then goes cold starts blowing antifreeze out of the overfiow. On Super Bowl Sunday, I removed the Radiator Cap on my 96 Explorer and of course water came GUSHING OUT!! !. A faulty water pump. Solution: Top up the coolant and see if it helps. Water pump is not to much of a concern as usually. Im going to try a few things. the radiator is full - Ford 1998 Escort question. To fix this issue, clean or replace. The heater will initially blow warm arm when the truck first starts for 5 min then start blowing cold air. Shut the door and air is forced through the heater. At this point you either want to remove all the freon and make sure you have a correct amount in the system. So you would run it and check hose to make sure both lower and upper hoses are getting warm after your engine temp is where it should be. It could also be a worm coolant pump that's not circulating water when at idle speed. Less common causes are clogged expansion valve or orifice tube. FORD AC AIR CONDITIONER DOES NOT WORK BECAUSE OF BAD AC PRESSURE SWITCH. control is moved to cold then back to hot whilst ignition is on and fan set to pos. I hurriedly put the cap back on an low an behold the heater stopped blowing out hot air. this can be a pretty tough job, the whole dash may have to come off. October 30, 2021. Heater Control Issues. The solution is to use a torx T50 and free the temperature flap. 04-24-2012, 01:04 AM. 6 motor 4x4. 1997 - 2003 Ford F150 - 2003 5. Hey guys i have a 2004 6. What causes a heater to stop blowing hot air just cold in a 2005 grandam. very good people,this is all they do,been in same place over 50 years. 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". . SOURCE: 1995 f350 blows cold air, heater core is hot but you will need to replace the air temperature control blend door actuator. 2005 mk2 1. This coolant, typically around 200 degrees,. 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. A faulty radiator fan. 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 back of the knob is directly attached to a small circuit board. Other Reasons. 6L . 4 where the heater blows hot air for a few minutes then turns cold. ford escort blows cold ford escort temperature. Why would my heater blow out cool air when sitting still and then hot air when going down the road and then it's not all that hot Try flushing or blowing high pressure air through the heater core lines. blow warmair for a few mins then back to luke warm. It seems like it warms up. After letting the car heat up, I went to the store and the heat was working fine. Ford Escort doesn't blow hot air but shows it overheats. You cannot blow air through it! It came from Ford that way and YOU MUST NOT REPLACE IT WITH A HOSE THAT HAS NO BLOCKAGE. SCPRODUCTIONS11 MEMBER; 2001 FORD F-150; 5. Quote:Furnace operating problem. HI there . As it idles the heater blows out cold air when I accelerate it stays warm as long as its being accelerated. 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 ,,. Then switch it off by using the power switch. This fan should turn on within a minute of the AC system being switched on. Usually a sign of low coolant or a blockage in the circulation. I suspect a vacuum problem with the A/C switch on the dash controller assembly somehow or the heater/AC valve is stuck. Installation is the reverse of removal. 2001 Ford Escort ZX2; Ford Escort Car and Truck. these mtrs are prone to failure. Driving 20miles into work on a cold winter morning, the heater blows hot then cold air from the vents when the engine guage shows fully warmed. Join Date: May 2005. However, after 5 - 10 minutes it stops cooling and starts blowing warm air. It sounds like you have air trapped in the cooling system. if i remeber correctly you may have to slide the. 2008 Ford F-250 Super Duty 40,000 mi, Visitor. Search Fixya. Browse Categories. A small refrigerant leak is the most common reason a car's A/C gradually loses its cool. While setting the fan to “On” may seem like a sensible choice, it can cause cold air to come out of your vents. Close. Anyway down to business. Posted June 26, 2013. If both are cold, you have an air lock in the heater core. Search Fixya. . If so check to be sure that is is opening and closing. heater not working, ford explorer over heating, motor jumping, I flushed radiator, made heater blow cold air. 1. AC blowing hot air. 0 heater blowing cold air. 2010 fusion ac on and working sometimes starts blowing hot air like heat but compressor clutch still engaged with cold suction line. 0 liter SPI. The issue is that it is blowing only cold air. so I drove it an hour home no prob heater worked great. Heater stopped working on 2000 Taurus (no more hot/warm air blowing out, just cold) after turning heat control from 'hot to vent' . When driving on freeway the heater works sometimes but turns cold when at red light. R134a canister with pressure gauge. . Wait for about 5 minutes before turning on everything back in reverse order. Read full answer. so I drove it an hour home no prob heater worked great. --- Search for other vacuum motors under the dash to see if the. A couple days ago everything was fine, a/c was working great. It will blow hot (once it is warmed up) but then it switches back to cold. 2010 fusion ac on and working sometimes starts blowing hot. If both hoses are just warm, probably a bad thermostat. Your truck should have a vacuum actuated blend door actuator which looks something like this: The vacuum line to the actuator is pinched or broken. Check and top up the reservoir again, if needed. 2012 Ford Expedition rear A/C won’t blow cold a/c. answer #2. Have replaced heater core, - If you need clarification, ask it in the. Find a Shop. Learning to use the forums. One heck of a job to get to that blend door motor but its done. 10 minutes shy of 2 hours to reinstall dash and components. Temp outside is below freezing. #9 · Feb 26, 2017. The heaters and ac in my 98 escort are blowing out cold air only. not warm, hot. 1. Jul 10, 2008. The 1st part i bought was faulty! You can check the valve by connecting it directly to the battery terminals. 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. Then when i let off or am sitting at a stop or idling it starts blowing cool air like almost a/c cool. This takes about 5 minutes- total. We begin to clean the furnace by cleaning hot and cold plenums as well as the blower. 1ST MAKE SURE THE SYSTEM IS FULL OF COOLIANT, 2 ND START VEHICLE AND CHECK THE 2 HOSES GOIN TO HEATER CORE TO SEE IF THERE HOT . There is no heater valve on a 1998 ford F-150. It may not be working! you could put your hand on it and see if you can feel it trying to engage! just turn the heat **** from cold to hot while the truck is running or in the on position! It is held in by two screws and at worst case for now,,, you could unscrew it, see if it turns from on to off and if so you know it is the door. Wrong Fan Settings. At the simplest level possible, the heater works by passing hot coolant from the engine into a tiny radiator called the heater core. 8 tdci estate. It is used to cool the hot compressed refrigerant back to ambient temperature as it comes. '01 forD F-150 heat blowing colD air changeD thermStat - won't heat up cab - Ford F-150 question. I''m trying to help a friend out with her a/c on a 1996 escort wagon. TRYING TO FIND OUT IF A FUSE COULD HAVE BLOWN CAUSING HEATER TO STOP BLOWING HOT AIR - FAN WORKS BUT BLOWS COLD AIR. Just went through this exact same problem myself at 76K. Less common causes are clogged expansion valve or orifice tube. When my radiator started leaking it started blowing out warm air. Car died and wouldn’t start again or if it does it runs roughly for a few seconds then dies; Speedometer stopped. Sometimes the a/c button will turn on. Causes? 2003 Ford F150 heater blows warm air at idle and very cold air at road speeds. Then back to hot, then back to cold. It was fine last night and a few minutes ago. Mk3 2004 2Ltr TDCI LX Estate. Rest assured that they'll be able to help you. also changed the Dual Control Valve(that was bad), still same problem. If your engine temp is low (on the dash) then this is the case.