I have owned my 2008 Rx 400 h for just over two months now and at the risk of sounding dense, am I right in assuming that when you are coasting along without the engine running, the heater will start to blow cold air? Everything works fine until you lift your foot off the pedal. This is my first Lexus/Toyota and hybrid so I'm not totally au fait with how it should be working.
View 2 RepliesI have a 94 ford Taurus all of a sudden my ac doesn't blow cold and my heat doesn't blow hot. Also every now and again I hear a sound like an alarm clock coming from passenger side??
View 3 RepliesI can't seem to get the engine temp to middle range on the marker, but yet my heater blows "to me" hot air. Even while sitting in idle for extended amounts of time I cannot get it to "operating" temperature. I would think if my thermostat was stuck open my heater would blow either cold or slightly warm air. I have the 5.4L engine with knn air filter and no cats.
View 14 RepliesI have 2006 GX470 with Nav. A/C does not blow cold from driver side , I replaced Air mix servo, but still same problem. heater is working both side .
View 4 RepliesMy 99 grand cherokee's heater is broken - fan blows but only cold air. I've had two mechanics tell me its probably the blend doors and will be quite expensive to repair because it requires removal of dashboard. Looking for after market repair kit which allows for a DIY fix going through the glove box? Is this a good bet to try?
View 5 RepliesCannot figure out how to get the heated air to flow through the back via the rear vents. All I get is outside air. I cannot find anything about it in the manual. The dealer has no clue but is trying to find something on it. New 2009 Santa Fe Limited.
View 11 RepliesSo the heater on my 2001 f150 will only blow through cold air. I thought that I may have a heater core clog so I back flushed it with water until it was coming through clean and unrestricted but that didn't solve the problem.
Now, some things to note are a potential coolant leak. I can't seem to find one but I filled up the antifreeze about two months ago and when I checked it the other day it was more or less empty. I've filled it up again and I will monitor it for the next couple of days.
Another thing to mention is that no matter what setting I have the heater on (ie 'panel' or 'defrost') I get cold air blowing at the passenger side's feet. Is this indicative of a hose leak or something?
Also worth noting is that the intake hose to the heater core gets hot after driving but the outtake stays cool. This is why I originally thought I had a core clog.
Should I be checking my blend door? If so how to I access it?
I took my 200000 mile Prius to a garage that is highly recommended and the mechanic stated that I need a new evaporator and expansion valve. He tested the car for a day. There was no time to do the fix so I arranged for a dealership that I trust to do the job. When they were ready to do the work, they detected no leak in the evaporator, but said that the compressor, expansion valve, and AC line needed replacement. (They showed me the leak in the compressor with special glasses.) After I called the first mechanic with the new info, he said that he could detect a leak nowhere, but, in the evaporator, and, at the expansion valve area. I am now stymied as to what I should do.
View 7 RepliesPush A/C button is always on green. The (air speed) 01234 button is also always on green. the Push button turns on and off orange whenever I click it.
Anyways, the AC doesn't blow any hot air... always just cold. I've adjusted the dial to red and have left it there for a long time... no hot air. Any trouble shooting I can do?
2005 Honda Accord.
Problem 1: Now that is is finally getting below freezing and I am having to use my heat, and I have noticed that it will all of a sudden blow ice cold air. It does not matter if I am idle / accelerating / decelerating. I must provide a disclaimer... I have not had to use the heat in the car since I purchased it Certified Used from the dealer in South Florida. After moving back to where it actually gets cold I find this issue. I had my trusty mechanic look at it and he flushed the heater core. That is problem 1.
Problem 2: For about 6 months now my car has been doing this odd shaking routine. It happens probably every time I am out driving. When it starts to shake, I can prevent it from dying by revving the engine. It does not matter if I have just started the car, am sitting at idle or if I am driving down the road. No check engine light or malfunction indicator light has come on the entire time. It feels like the car just runs hard, not nice and smooth like it used to. I have brought my car in to the trusty mechanic three times now and he can not find any problems. I did notice this morning that while sitting idle at the stop light, my car had its little epileptic shake and then stopped and the RPM's dropped to 500.
Later when I arrived at my destination, while sitting at idle before getting out of the car, the RPM's were at 2000. I have routinely put in fuel injector cleaner additive when I fill up with gas... maybe once a month. I usually fill up with regular gas, but will occasionally fill up with premium. This whole situation is blowing my mind!
Here's what I have. 02 X 7.3L 4x4.
Heater will work fine. Then out of nowhere just blow cold. I can turn it off then back on it'll blow hot for 1 minute or 20 minutes. Then out of nowhere blow cold again. It doesn't matter if I'm highway driving or city driving.
I'm kinda thinking it may be the door in the duct that's just closing. I real don't know.
I was driving home on the highway, and my 2006 Elantra did the following things in this exact order:
-Heater started to blow out ice cold air
-Temperature gauge rose, dropped down, and then rose right back up to the red area and stayed
-As I was slowing down to pull over, my tachometer dropped to 0rpm
-My "Check Engine" and "Battery" lights came on
-The car completely died and came to a rolling stop on the shoulder
I am trying to find answers as to what has happened to my car.
I have a 2004 GX470. Now that the weather has dropped I have noticed that my heater is taking a long time to warm up all it does is blow cold air out of the vent. Subsequently I have started to notice that they car will start to overheat. It will never get to the point where it will hit the red but it will go up and then come back down to mid range. There doesn't seem to be anything else wrong with the car, it idles fine, starts fine etc. Could these two issues be related?
View 14 RepliesI have a 2006 f250 and the heater will blow cold air unless you are driving in like highway conditions. If you stop or drive slow it blows cold air only. What is causing this???
View 3 RepliesMy heater quit blowing hot or warm air all of the sudden. I took my mechanic and they said it showed no codes and were afraid to mess with it so I took it to a dealership. They worked on it most of a day. Said nothing showed a code as bad, they got into it and found the air going into the heater core was hot, but it was cool coming out. They spent some time flushing the coolant and said they found some sediment in the coolant fluid. They were hoping to flush out anything clogging the heater core.
View 8 RepliesMy 2005 Prius is having a problem with the AC. It will only blow cold air if the temp is set at MAX COLD. Any other temp setting and it will blow hot air. Really hot air. It makes no difference what the outside or inside temps are. Is there a simple fix for this? I can control the AC by setting it on Max Cold and changing the fan speed, but I would like for it to work on the auto setting the way it is supposed to.
View 3 RepliesAlright, Ive been working on this AC system for months and have exhausted the search function and my patience with this car.
Originally the AC wasn't working, self diagnostic test pulled code 00, compressor would kick on for about 10 seconds every time the car was started but never blow cold air.
Had an AC tech check it out, pressurize the system properly, didn't change anything at all.
Replaced the entire compressor set (expansion valve, etc…) and the AC still doesn't work, again it kicks on for the first 5-10 seconds when the car is started and this time it DOES blow cold but then shuts off. Self diagnostic code throws code 21 & 24 in both dark and full daylight.
Replaced the solar sensor today and the diagnostic code is gone (00), but nothing changed with the AC.
Pulled the low pressure switch and jumped it, again the compressor kicks on and then off after 10 seconds with the switch JUMPED!
Replaced the relay, no difference. Cleaned the air filter, no difference.
I'm at the end of my rope! My 2005 Ford Five Hundred Limited has a constant problem with the A/C system and overheating. In the last year I've replaced the compress, expansion valve, dryer FOUR times. They have replaced the condenser, blower motor, and added Freon, and checked for leaks. It will blow cold when running fast and then blow hot. They have replaced belts pulleys, They have replaced the thermostat, fans, coolant reservoir, hoses. and it still overheats. I've taken it to 4 difference mechanics including two dealerships. No one can seem to fix this problem.
View 9 RepliesI have an issue with my a/c. The left side blows out air but it is not cold. The right side is cold. The whole front dash has 4 vents total so the left two does not blow out cold air at all.
View 14 RepliesSo i just bought my lexus es350 2007 and I just realized that my driver's side doesn't blow cold air unlike the passenger's side i tried to google it and then i believe as i read on here its the blender door.
View 5 RepliesSo, my A/C in the 2005 doesn't blow cold. It blows, just not cold.
The dealer recommended doing an evac/recharge, which, from what i understand, is there way of finding out where I have a leak.
I took it to my local shop, since the dealer wanted a lot of cash to do this. After having my car in their lot all day, the local fellows called me to say that they couldn't do any recharging/service on my A/C since the coolant is something only the dealer can get (which is a special kind of coolant with special lube in it, right?).