Ford A/C :: 1998 - When Accelerate Heat Begins To Come Out Of The Vents
Apr 26, 2011
I have a 98' F150 with a 5.4. When idling the A/C works fine. When I accelerate heat begins to come out of the vents. It does not put out cold air again until the motor is back to idle speed. When adjusting the temperature, I can hear the blend door motor turn but I don't hear the blend door shutting. Should I hear it shut or do I have a vacuum problem. I don't know where to begin if it is in the vacuum hoses.
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1998 Ford Windstar 3.0 van. After in town driving for for 1/2 hour or more, my passenger side front wheel begins to heat up severely (partially melted the hubcap). It also begins to "grab" as if the emergency brake is on. when it cools off, it seems to rolls normally. I am nearing not hearing any obvious bad bearing noises when it is cool.
It seems like an obvious bad wheel bearing issue, right? Before I take it in to a shop to replace the bearing and the hub, I want to explore if it could be a faulty caliper that might seize when it heats up.(something I can fix easily myself)
What can I look for to diagnose? When it is cool with the wheel removed I see no obvious issues with the brake pads/caliper, but that is not to say it doesn't act differently when super hot.
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I have a 1998 chevy cavalier, 4 door, 2.2 liter SOHC, which has been running hot for a while now. readings are off the dash guage, here's the scenario. on startup from cold, the temperature begins to rise within 60 seconds, reaching what i consider normal operating temperature within three to five minutes, at approximately the "NO" in " NORMAL" on the gauge.
It reaches what has become it's usual operating temperature, at "RM" within another minute or two. If i am in stop and go traffic, the temperature will rapidly reach the final mark after the "L", but not the red zone. If I get on the highway, the temperature will reduce back to the "RM" position within one to two minutes, three to four minutes in steady traffic at lower speeds, i.e. 35 and all green lights. Thermostat has been replaced, water pump has been replaced, electric cooling fan is running correctly, radiator is free and clear of debris.
When I first got the car back in 2000, it ramped up to heat much more slowly, and hung out at "NO" in all types of traffic. in 2004 i went and picked up my car from my father's place, he had taken it to the local shop and had it given the once over, which is when this problem began showing up, and has gotten progressively worse over the years. I've gotten nowhere with other mechanics, the system is leak free, and the coolant tests good.
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I have a 86 f250 with rebuilt 302, new radiator, new hoses and heater core. I know the cold to hot selector works to open the door. now the ac works great although my heat is not working properly. I can put the defroster on with heat and the blower in the engine compartment comes on like normal. Now the problem is that we i put it on heat the blower in the cab does not blow air through any vents. I just purchased this vehicle and not really sure how everything works.
Funny thing also when the ac is on i turn the blower on low and its really high then the high is really low (its like to switch is working backwards) not sure if that has anything to do with it. Then when I was looking in the engine compartment i noticed the wiring harness has a plug going to the blower, then one plug to what looks like a heat strip of some sort, then someone took two oranges wires and wire nutted together to get the engine compartment blower to work. So now I'm wondering if I am missing something there??? Here's a pic of the engine compartment.......
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Heat is blowing through my dash vents in front of the windshield with the controls OFF!
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I just picked up a 78 F150 Ranger XLT with a 351M in it this past friday. I am absolutely in LOVE with her. She is a great solid truck. One issue I am having though is that she blows hot air out the vents over the hump but nothing is coming out the top of the dash. I am guessing that i will have to take the dash off and clean out the box check the door etc. What did you do to rectify?
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Ford - no front heat - 2000 Windstar - actuator
My Dad's 2000 Ford Windstar van stopped putting out heat to any front vents. I was able to hear a rhythmic thumping sound when the heat control slider was placed in the hot position. I looked for info on line, and found many posts that said the actuator was probably the issue. I also went back and asked my Dad if before the thumping sound he had heard anything else, and he confirmed he had heard some gear grinding noises, which others have reported as the actuator is starting to grind and slip its internal gears. If the actuator is not working correctly, it won't hold the heater duct door in the open position, which means you can't get any hot air.
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2001 F150 5.4 4wd - AC not working but when I turn the temperature dial to the blue side and turn on the fan, super hot air comes out of the vents or wherever I direct the fan to blow (Floor, defrost, etc) I know it shouldn't blow ice cold especially since my AC doesn't work but.....shouldn't I feel a temp change coming from the vents when I move temp dial from the red area to the blue? It's max heat wherever I have it set.
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About mid-October I noticed when it as real cold out and I had the heat running whenever I would come to a stop I noticed there is very little to no heat coming from the vents, despite the engine being warm and running at operating temps. At the time I was working for a shop and I asked one of the mechanics what the problem was. He said that it was the radiator not having enough coolant.
Turns out when we pulled the cap the coolant res, was just about bone dry. So we added in about a gallon or so of coolant with the truck running and sure enough at idle the heat was back.
Fast forward to the last couple of weeks and when I am sitting at idle again same thing happens. So somehow the engine is losing coolant. Its not ending up in the oil (no white on the dipstick) and there is not a coolant leak. As it sits there is 255,300 miles on the truck now. 1999 5.4L F150....
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My 02 Mountaineer doesn't have any air flow volume out of the heat, defrost, or a/c vents. The temp will change from hot to cold and the air direction will also change from floor, dash, windshield, etc. The a/c recirculation door also seems to be working. The fan sounds as it is running very fast, just not putting out any volume. What should I look for?
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My 2001 F250SD 5.4L is doing something odd. When I have the A/C on and accelerate, it shifts from blowing out cold air from dash vents and goes to blowing lukewarm air out from the defrost vents on top. As soon as I decelerate or tap the brake pedal, it switches back to the dash vents and blows cold again. Even minor acceleration switches the air from blowing out the dash vents to blowing out the defroster vents.
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I have a 2008 F350 and there is nothing blowing out of the vents or defrost for AC or heat. It doesn't matter what fan speed is set. Would this indicate a blower motor? Where exactly is it located and how to change?
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I noticed a couple weeks ago after starting the truck and turning on the a/c that nothing was coming out of the vents. I found it odd when after driving a few miles the a/c kicked in and started blowing cold air. Today I needed to put on the defrost and same thing, nothing came out of the vents. I drove around for a while hoping it would kick in just like the a/c did but nothing. I did check the fuses and relay. When you turn the control either to heat or a/c you can hear a clicking sound under the hood. It's trying to engage but nothing is coming out of the vents.
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Don't get much rain here in SoCal except during the winter. After the last rain I noticed that there was water in the heating/ac vent system - or at least that's where I think it was.
When I made a right hand turn some water slopped out onto my foot and gave me quite a shock for a second till I figured out what had happened.
I suspect that there must be some kind of drain tube for the vent system that's become clogged, but before I start crawling around under the truck and dash I figured I would ask here first. Any useful tip on clearing the clog?
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This is the it's always something post. Alternator rebuilt to 185. Batteries tested by AAA. When I went into the truck tonight the door locks made a clicking sound like the battery was going dead. Truck fired right up at 0 degrees.
I just installed WARN locking hubs and now I only have a defroster blower that works. Is there anything else besides a vacuum leak that might cause that?
6 CD Player has had problems loading and unloading for a few years but now it just says initializing and goes right back to radio.
I am really regretting doing the right thing two weeks ago and not letting this truck burn when it caught on fire on the Turnpike.
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I have a '06 2.0T Auto, and the first cold day since I purchased the car was a week ago (I live in North FL) and turned on the heat, to find out that little to no heat was getting let out, so I brought it to my local guy, and said that the thermostat was probably stuck open, so he replaced the thermostat and housing for a couple hoses , and tested out the heat just now (55 degrees out), have it on 80 degrees and full blast, and still nothing. Also, usually I hear the cooling fan kick on after I shut off the car for about 5-10 secs, but haven't heard it since its not 90+ out. Its in the 70s.
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Having problem of not getting any heat from the vents of the car? The fan works and more than likely it isn't the Thermostat. The engine also heats up normally, it's just that the air the blows out of the vents does not get hot anymore and it's getting to be fall.
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2006 F250 with the dash controlled 4x4. I typically keep the front hubs locked on this truck. I have recently noticed that when shifting into 4x4 that the a/c or heat will switch from blowing out of the vents to blowing out of the defrosters. Any clues how to fix this?
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Recently I noticed that I still have hot air coming through the vents with the climate control system completely off. I can tell that the fan is off because it's not blowing through the vents but the vents are very hot.
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The other morning I started my car up and no heat or air would come out of my vents. The night before I had to drive through a blizzard and my car was completely packed with snow. The climate controls function normally, everything is lighting up when i select a button, but no air is coming out of the vents (rear defrost and seat warmers work fine). There is no sound of the blower starting when I turn the air on, hot or cold. I live in Northeast Ohio so we currently have several inches of snow and it's well below freezing outside. I live in an apartment so my car is outside 24/7 between being here and at work. I looked up a bunch of posts on here and other websites to try to figure it out. I ended up taking my cabin filter out and it is completely packed with snow. So i vacuumed out the snow that was left in the cabin filter housing as far as i could reach. I also unpacked as much snow as possible from wheel wells seeing as the HVAC vent goes to there, and the blower still doesn't work.
What I am guessing, which I could be completely wrong, is that the HVAC vent is completely packed with snow and it's not letting the blower turn. I guess my question is does that seem remotely possible or is it something else completely? My climate control doesn't work on the highest setting so I don't think its the relay I read about and my heater has been working fine with no noises or anything and I don't believe it would just go bad out of the blue.
2012 Passat SE 2.5
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I've got a 2001 4 motion passat and I am not getting any heat out of any vents.
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