Ford A/C :: Shifts Blowing Out Cold From Dash Vents To Lukewarm Air When Accelerate
Aug 5, 2012
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 2002 f150 supercrew 5.4 liter. About mid winter my heat suddenly went from hot to lukewarm. A check of the fluids shows all is good. I use my truck solely for work so I didn't bother with it at the time. Summer is here and my AC blows kinda cold, at best. I can hear the blend door moving. The temp control does make a huge difference. It just doesn't get real cold or real hot. Not like it should.
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Right now it's 101 degrees outside and the A/C on my Prius just ain't gettin' the job done. It doesn't even feel like it's blowing cool air anymore, just lukewarm air. How can I cool down the cabin more? Temps like this only happen a couple times a year here. What do Prius owners do in places like Pheonix where 100+ temps are the norm?
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I just replaced the blend door actuator. But now when I am driving its blowing cold air thru the dash vents one minute then super hot air the next. Also I had a problem installing the actuator over the keyed shaft on the housing...
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I seem to be having an issue with my air conditioning. I don't think it's an ID-10T error, but it is very peculiar.
My driver side vents blow hot or lukewarm air, however my passenger vents are ice cold. I have the 15 limited, so it does have the "dual" control, and as such I think the issue may be related to that.
Both controls are set to low, max fan, head only, and AC. The "Sync" and "Auto" buttons have no effect.
Any things I can check? I really do not want to bring it into the dealer as they treated me very poorly the last time I came in and my car was out for a month.
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OK.. 2005 F150 Lariat. Air conditioner worked on the way to work, went to drive home, air not blowing out the 4 main dash vents. Blows cold out the feet, and redirect SEEMS to be working, just not blowing at all out the main vents in the dash?
Even if you adjust the temp to where it should be blowing warm/hot air, it will not blow out the main vents.
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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'm driving a 2000 F150 with the Triton V8 5.4L.
My check engine light came on the other night while heading home. I went to Auto Zone and had them scan it and it came back with the P0125 error code.
My guess is that the thermostat is faulty because my heater is blowing lukewarm air after about 20-30 minutes of normal driving and I would expect the air to be much warmer so I'm thinking that the engine is not getting up to normal operating temperature.
I understand that this can be bad for fuel economy and such, but my question is it safe to drive?
I had planned on hunting up in the hills tomorrow all day and just want to know if this could cause any damage?
Here's a picture of what my cluster looks like after running for about 30 minutes.
Cluster after 30 minutes of driving.
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4.0 v6 A/c works great at first. Then after a while stops blowing out the center dash vents. What to check? Still blows cold out the vents by each front door...
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I had my entire A/C unit converted to R-134 on my 93 F-250. This was the entire system done at a FORD dealership. I've got about 1000KM on it, mostly this past winter. I noticed a few weeks ago when i turned the A/C on that the air seemed to be only blowing air, like vent. It was not air conditioned. I ran it for 15 min or so before suddenly there was a blast of really cold air and it held strong until i turned the truck off.
I cannot reproduce the results again, however. I can tell that the compressor kicks in like before, meaning it seems to be working mechanically fine. The temp outside has been at or just above freezing. Would this have any effect on the A/C? Should I park this is a heated parade or something to test it? What to test/check prior to bringing to the dealership?
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I've got a 1995 Buick LeSabre that has a curious problem with the air conditioner. The AC blows good and cold, but when I accelerate the air stops blowing from the vents. I can still hear the fan running, so it's like the air is being redirected somewhere. Now, once I get up to speed after accelerating, if I let off the accelerator for a second, the AC resumes blowing normally.
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My A/C is blowing cold but only thru the defrost vents. First it was blowing normally from the dash but during acceleration or under load, the a/c would randomly blow from any vent, from the floor, dash, defrost. Now that stopped and it only blows from the defrost vents above the dash-board.
1997 F-150 XLT, 4.2 Liter, V6, manual transmission.
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I have a 2010 F150 and now only cold air comes out of the vents. I have not changed the thermostat since the truck is not running hot. I have read that the blend door may be stuck. Where the blend door is on the 2010.
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2002 - 7.3 lariat, my a/c stays on max because of the recirculating effect. When I get in the next morning during summer of course, my dash vents take a few seconds to begin, default defrost till that time passes. Sure I know about leaks and redone all that to make my vacuum hubs work correctly. It didn't begin till later not right after that overhaul.
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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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My heater vents have been acting up. I have read that there may be a vacuum leak that causes the blend doors to default to defrost...
Where the vacuum line fails? I have ESOF 4x4 and that is still working. I think there may be a correlation between engine vacuum and my vents: at cruising or idle the vents work ok (not perfect) and under acceleration (less vacuum) the dash vents stop blowing.
I thought that the blend doors had their own vacuum pump, so I do not know why things change at different amount of throttle?
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1998 F150 XLT 4.6l automatic,,,
Drove the truck on a trip the other day, about 650 miles with a loaded 5x8 trailer in tow. A/C started acting weird. When the truck was on level ground, or going down hill, the A/C was fine. Cold air coming out the correct dash vents. As soon as I started up hill, or put the truck under strain of acceleration, the A/C would stop blowing out the dash vents and would start coming out the floor or defrost vents, or just not come out anywhere.
When I turned the A/C off and just used the vent setting, it would do the same thing with the fresh air. I guessing this has something to do with my vacuum lines, somewhere. What I should be looking for and where?
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The town car will not switch its blower position from dash down to the vents or the floor. AC/Heat both work and the speed is still adjustable.
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My car: 2008 Prius (base)
Here is the problem: All of a sudden the two middle vents in the dash stopped blowing. I have played with the settings - on, off, all the way hot, all the way cold - nothing from the two mid vents. The left and right vent blow with no problem. There is also cold air coming from the vent near the windshield - just the two middle dash vents are not functioning.
What I have done so far: I had it looked at by a mechanic who I trust. He said there is a small motor (he called it a servo motor) that controls that middle vents (open/close). He said that had gone bad. He manipulated it so that the air blows out of the vents now and said not to change any settings until I am ready to replace the part.
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I took my 2000 V6 Passat into the shop because my heater vents were blowing cold. They tested the system and told me the following:
The hoses leading to the heating core are warm, but no warm air is leaving the heater core, indicating that it's plugged up with corrosion. They testing the coolant fluid and found that the incorrect coolant had been put into the system and that the fluid was carrying an electrical charge that must be corroding the aluminum portions of the system. In addition, the engine temp sensor is kaput and never goes up.
They offered a garden hose flush the heating system for a few hundred bucks, but warned that it is only 50% successful. They recommend replacing the heating core.
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I have an 06 Prius. I was driving my Prius today and I've noticed that my car has NO HOT AIR...
And this is Winter!! I was driving for about 20 mins and still...No Hot air...vents are blowing cold (cool) air.
I recently changed my condenser/radiator but I did NOT fill my condensor with the A/C gas yet. (could that be the problem?) But isn't the gas inside condenser is for A/C and not for the Hot air??
Any other stuff that I need to check to solve this problem?? (harness, fuse etc.?) It's cold outside and my car has NO HEAT!
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