Suburban :: Heater Blows Hot At Idle Only
Nov 12, 2013
At idle my heater kinda blows hot, at highway speeds i'M a human pop sicle.
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Nov 12, 2013
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Ford Super Duty (1999-2016) :: 2005 - Heater Blows Cold Air At Idle?
I've got a 2005 F-350 PSD KR. At highway speeds I get heat coming out everywhere it should. In stop-and-go traffic or at idle, the fan just blows cold air. Once back up to speed, hot air starts blowing again.
The fan stays running and the heat position (lower/upper-vents/defrost) stays the same. Just the temperature of the air blowing thru changes.
Things I know it isn't, thermostat is fairly new, anti-freeze is topped off, and the radiator cap is both good and on like it should be.
It sounds like maybe the blend-door or a vacuum leak according to a few of the posts I found with similar symptoms.
Suburban :: 2000 - Heater Blow Warm But Not Hot Air
I have a 2000 suburban with a 1500 motor and 300000 miles. Last year I replace the water pump and the thermostat. The heater would blow warm but not hot . But only when I start to drive. Yesterday I decide to change thermostat again thinking the new one from last year was faulty. Now the heater only blows cold air .
View 3 RepliesLS / MKZ :: 2002 - Heater Blows Out Cold Air?
i am having some big difficulties with my car i own a 2002 Lincoln LS v-8, has about 118,000 miles on it. when i bought the car USED the heater or ac didn't blow at all we fixed that all it was a fuse. But know that it is winter time the thing is my cars heater blowsn out cold air. ive noticed some times heat blows a little from the passenger side but not the driver and then if it does get warm (my car) its takes for ever. Know i dont really have a problem with the defrost becaseu in the mornings my windows are defrosted after like 20min. ive been reading alot about DCCV and i want to think thats the problem but i really dont know.
View 2 RepliesCamaro :: Car Idles The Heater Blows Cold Air
When my car idles the heater blows cold air but as soon as i throtle it up or drive off it starts blowing warm air, just bought the car the only thing ive checked so far is the coolant level wich is fine.
View 2 RepliesSonata I45 (YF - 2011+) :: Heater Only Blows Out Of Defroster
I have a 2014 sonata gls with about 20K miles (have only owned it for about 3K miles) and have noticed that no matter what position the selector switch is in, the air only comes out of the defroster vents. None through floor vents, nor front vents... just the defroster. What i should check or do?
View 5 RepliesPrius V :: Automatic A/C Heater Blows To Feet Only?
I bought my prius IV brand new in December, and its my first one. One thing i've noticed that's different, but when I have my AC on auto (I've preferred using Auto since my last car..) I notice when its cold out, it only blows to my feet, then eventually maybe after driving for about 45 minutes or so it will eventually switch to feet and air. Is this normal? Why it goes to just feet only for so long?
View 2 RepliesFord Excursion :: Heater Blows Warm Air But Not Hot
I've noticed that my X in the winter does not seem to warm up as it should. I watch the temperature gauge and notice that it barely gets to the first mark in the operating zone of the gauge. The heater blows warm air but not hot. I think its the thermostat that needs replaced because in other vehicles I would see the temp gauge rise and then drop when the thermostat opened. I've flushed the radiator and changed the fluid and not difference. I did find the heater valve on the right side was unhooked from the vacuum line and plugged it back in but no change from that being connected. Anything else I should check?
View 5 RepliesSuburban :: 1994 - Heater Is Not Working And No Control On Front Vents
I have a 1994 suburban1500 heater is not working in front or rear and in the front I have no control on the vents it only blows on the floor flashes if I try and change from floor to vents or defrost also blows air on floor while driving with the fan off so seems that the vent is stuck open the rear I have control on vent or floor just will not blow heat just outside temp air I had the same problem with a buick I had and never figured out the problem this is driving me crazy.
View 1 RepliesGrand AM :: 2002 / Heater Occasionally Blows Cold Air?
I own a 2002 Grand AM GT. With the engine temperature reading around 200, and the heat set at maximum, frequently, for about a minute, I will get nothing but cold air. At maximum heat setting, on one day, there would be hot air. Yet, at another time the air output would be lukewarm.
View 3 RepliesCivic - Honda :: Heater Only Blows Hot Air When Driving Fast
The heater in my car only blows hot air when I'm driving fast. At stop signs it blows cold. You can imagine how this affects my driving strategy. What the problem might be?
View 5 RepliesDodge - Charger :: 2007 - Heater Blows Out Warm Air
I have a 2007 Dodge Charger. The heat blows out warm air. I have replaced the water pump and thermostat. When accelerating the vehicle, the heat turns to hot. Is this normal, perhaps a speical feature? I have 66,000 miles.
View 9 RepliesFord - F150 :: 2003 - Run Hot / Blows Cold When Heater Is On?
A friend has a 2003 F150 that after starting up will run hot but blow cold air when the heater is on. The truck will run hot for ~ 5seconds then all of a sudden the temp drops to normal range and the heater begins to blow hot. Simultaneously, the oil pressure light comes on when the truck runs hot, then falls to the normal range when the temp drops. I thought perhaps the thermostat is in backward.
View 2 RepliesFord A/C :: 1997 F150 - Heater Only Blows Warm Air?
I have a 1997 ford f 150 lariat with the 4.6 v8 and my engine had a piston slap so I replaced the engine with a used one and I put a new water pump on the engine. My problem is the heater does not get hot and it only gets warm when I get on the freeway and the rpms stay steady for a bit. but when i idle it just blows cool air. the heat door works cause I can turn it to cold air when I'm on the freeway and i just replaced the thermostat so I don't believe its that. It weird because the heater worked fine before I changed out the engine so i cant figure it out. the only thing i can think of is the water pump is bad out of the box. Could it be the belt or does spacing on the water pump have something to do with it. nothing is leaking.
View 7 RepliesFord - Explorer :: 1995 - Heater Only Blows Out Cold Air
My 95 explorer heater only blows out cold air. I have topped off the antifreeze and just replaced the thermostat. The engine operating temperature is very cold, it won't even come up to the first mark. It is very cold here in Utah but I still can't imagine why the engine won't heat up.
View 9 RepliesFord F-150 - 1997-2003 :: Heater Blows Cool Air
I took the dive into a new heater core, as the heater was not getting hot. These are the things I did while on my adventure.
1. Before reinstalling the hoses, I blew thru them to make sure of no clogs...water flew out the other hose..no problem..no clog.
2. inspected mix door not cracked or broken...no problem
3.actuator opens and closes ok, I assume, I can hear the motor run and the door thump closed...no problem
4. water and anti freeze level good....no problem
Start vehicle,let warm up, turn on heat.....No Heat...
5. check hoses at core, one is hot ,the other is not....Problem...
1997 f150 4x4 ...
Ford Excursion :: Heater Blows Cold In The Back
The heat up front blows nice and hot but no matter how I adjust the rear ceiling mounted controls it blows cold in the back. Is this a blend door issue or something with the rear controls? Also, on a side note, one of my rear power vent windows just stopped working too. I guess it's either the overhead switch or the motor back there.
View 8 RepliesFord A/C :: 1968 F250 - Heater Blows Hot Air With All Controls Set To Off
My 1968 F250 blows hot air with all controls set to off. The truck is fairly new to me and I'm a complete newb with a wrench....or screwdriver.....I think this should be a fairly easy fix? Aside from that it does work well.....it just doesn't shut all the way off.
View 1 RepliesPassat (B5) :: 2003 - Heater Blows Cold And AC System Turns On?
When I turn on the heater on at any temp and fan setting the A/C automatically turns on (compressor and condensor fan turns on) . Engine temp comes up and stays at 190. I can turn up the heat to HI and still cold air blows. All buttons and LEDs work on the climatronic, is it the climatronic that is bad?
View 1 RepliesElantra HD (2006-10) :: Heater Blows Luke Warm Air After 1 Hour
I have a weird issue on my 2008 Elantra. The heater starts blowing luke warm/cold air after running for about 1 hour or so and stays like that.
View 9 RepliesToyota - Sienna :: 2006 - Heater Blows Cold Air When Idling?
I have a 2006 Toyota Sienna Van that has 111,000 miles on it. I have a problem with both the heat and a/c. If you have the heat on but are just idling, it begins to blow cool air. Likewise, if you run the a/c but are just idling the air begins to blow warm. In either case, if you rev the engine (either in park or nuetral say at a red light), the air gets warmer if the heat is on, or colder if the a/c is on. In other words, the temperature only works correctly if the rpm's are up. Could this be a stopped up heater core.
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