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 1988 Toyota Camry LE V6. And recently the heater just started blowing ice cold while on the hot setting.
View 1 RepliesChrysler Town and Country. The engine warms up just fine regardless of my speed or throttle position, but the cabin heater has started blowing cold air when I back off or sit at idle. It may be relevant that we hear a lot of gurgling in the dash soon after starting the engine.
View 5 RepliesMy A/C will blow cold for about 3 min. and then stop for 10 min......then cold again for 3 min.....then warm for 10 min.......what is going on ? It does this when on climate control and on A/C . I had a compressor go out about 1 1/2 yrs. ago due to a fan failing...the compressor tore apart... This is not acting like that though .
View 9 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'm 1/2 way through a flush and water pump replacement. Its going to get cold and I don't want to blow any heater lines. I have the pump off and the block drained (I also managed to get some coolant into the block - but not the rear heat).
I don't see an easy place at the front to disconnect the lines. I'd like to blow them out just to be safe. What is the best place to disco in the front or if I even need to - can I just disco 1 in the rear and then blow in both direction?
I fear that there may be some vent door closed that will prevent flow. I can't start the truck - I can turn the key on.
So 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'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.
When I fire her up, the AC will blow cold for 10ish minutes until everything is up to normal operating temperature. Then it tends to blow warm, and that last for about 20 minutes, before finally settling back down and being cold AC again. I initially thought it was an issue with my compressor disengaging, but it doesn't seem to be...
View 3 RepliesA few months ago, when I used the AC, it would kick in cold for a minute, then blow hot air for three minutes or so... and repeat. I checked into it, and the only error I got was the N42 resistor short to ground code. Looked it up, and it's supposed to be located here:
(#1 in the pic).
Funny thing... Cars with Climatronic don't have that resistor in that location (or at all from the searching I've done... and my blower works fine on all speeds). A week later (after a cold front), the AC worked flawlessly... Through SOWO. Wasn't until earlier last week that I noticed it crapped the bed again. The compressor isn't even kicking on... I haven't had the chance to scan the car again, but I'm going out on a limb to say it's the same error, to a resistor that isn't on our cars...
The compressor seems to work perfectly when it does work... So I'm thinking something's not kicking it on like it should. I'll be checking all fuses/relays tomorrow in the daylight.
Heater is blowing cold air. What I have checked, coolant level, replaced water pump and thermostat, checked blend door, flushed heater core. When I checked the blend door via the heater treator method I was getting hot air coming off the core but also getting very cold air coming from the A/C evap in side the plenom box. I also pulled the fuse for the A/C clutch and I am still getting cold air. I am look at replacing the HVAC contol.
View 9 RepliesMy 2011 F-250 just started having a weird heater problem. My truck heater gets up to temp just fine but after cruising down the highway for about 15 minutes or so it starts blowing out cool air. I can turn the controls to defrost and back again and it blows warm, not hot but warm then cool again. It just started a couple of days ago. Temp gauges show normal temp also.
View 8 RepliesI 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 own a 2007 Camry LE. It's 4 cylinder and has 80k miles. Since I can remember, the A/C takes a really long time to start blowing cold air.
I'm in Miami, where ambient temp is about 90 F every day and it takes about 2-3 minutes to blow cold air. I can tell because this usually happens when I get around a certain street (SW 40th Street), so the problem is self-replicating regularly.
My father is a house A/C mechanic and he filled it with refrigerant but this has not fixed the problem. If the car has been driven and been parked under shade, the A/C blows cold air since the start. After being driven for 2-3 minutes, it blows cold air like a monster, I usually have to run it on 70 % cold and low fan - that's how well it performs.
I 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 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 RepliesAC blows cold for about 10 minutes and then blows hot?
View 2 RepliesJust bought a 04' F250, new head studs and gaskets. Put a tranny temp sensor in and replaced bad thermostat. My coolant res is full and temp is bout 185 (it's 10* outside). My heater is blowing out cold air, I'm assuming there's air in the system.
View 2 Replies