Elantra HD (2006-10) :: Heater Blows Luke Warm Air After 1 Hour
Jan 18, 2011
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 RepliesI 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 RepliesI have a SF 2009 Limited. Since I bought it 2 years ago, I noticed the heater blows luke warm air. Not hot. It takes 20min for the cabin to reach 22degC when it's only 0 outside.
It was like that when brand new.
It has the auto temp control, so it might be playing tricks on me but I don't think so.
I am tempted to find the pipe feeding the heater radiator and insulate the pipes. Maybe the heater only gets warm liquid.
What else can I do?
It blows luke warm air, no hot or no AC just luke warm... what could it be?
View 1 RepliesI'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 RepliesI 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 RepliesI 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 RepliesMy wife drives a 2010 Hyundai Elantra with a 5 speed manual trans with about 40K mi on it . We purchased the service maintenance package that covers all scheduled major and regular maintenance. A year ago they replaced the head gasket because they discovered a small oil seep. This was covered by the warranty.
Well a couple of weeks ago I noticed that the heat is fine on the drivers side and blows cool on the passenger side. This is a problem particularly when defrosting the windshield. When she brought it in for the next scheduled service a couple of days ago I asked that she mention this problem to the service people.
Their response was "we need to do a cooling system flush which would not be covered by the service contract" to the tune of a couple a hundred bucks. The coolant is the transparent green it should be due to it being changed one year ago so I have my doubts about it being the heater core.
My 2007 es350 77k miles. Heater starts to get warm and then it blows cold air. What could cause this.
View 8 RepliesFord crown vic, 1999, 125k miles, no engine work has been done, did flush cooling system in spring of 2013 and put in a 50/50 mix of coolant and distilled water (from a jug). No problems for the summer of 2013, have been using heater with no problems until around Tuesday of this week.
Car runs fine, no leaks, coolant checks out good. BUT now.. My temperature gauge hardly moves (up) and the heater blows warm air only. If I am driving the gauge will not move, if the car sits running for awhile it will move up some and the heat will get warmer inside of the car. My guess maybe a stuck thermostat?
So the other morning I drive the 140 miles out of town to work for the week. when I pull up to the job site the cooling fans were revving really really high! never heard this before. then it went back to normal after I opened the gate and parked my truck and shut it off. I'm driving maybe 5 miles tops to the job and back to the motel every day. however that is far enough that my heater should be warming up and it's not even coming close to warm. it blows cold air. and to compound that I'm not sure the cooling fans are even working. they don't appear to be. Is there a connection here?
2011 xlt 4x4 super crew.....
My car doesn't blow hot air. the temperature gauge goes up to half way like it normally operates at but the air never get more than luke warm. I changed the thermostat last year with no better results and I just had the timing belt and water pump replaced in July. It been an average of 8 degrees here for the last week.
Its a 98 camry, 4 cyl, Automatic...
I am having a heat problem...first my temp gauge never goes above 160...second...my return heater hose is not hot...my upper radiator hose is tight when I squeeze it.
View 7 RepliesI just replaced the radiator in my 2001 Elantra and now the heater will not blow warm air. Also the temp gauge on the dash stays at cold.
I have replaced all radiator hoses ...
New thermostat
New thermostat sensor
I just changes the heater core, water pump and thermostat and I only get luke warm heat coming out of the vents. Did I need to have bled the heater core?
View 3 RepliesNissan Frontier 2004 with v6, air, automatic 4x4.... I only have luke warm air coming into my truck. The switch on dash switches from defrost to floor or thru dash . Was thinking maybe a switch under dash not working maybe, but do not know where to start looking.
View 3 RepliesJust went on a trip to SC. It was hot as hell - 100F most of the trip. The a/c would blow cool (not exactly cold) for a while and then go luke warm (way better than outside but not particularly refreshing) for a while. So I was reasonably comfortable but definitely not cold.
This would happen about every 15-30min where I felt like the compressor had stopped working for a while. I am thinking the compressor is probably limping along and about to die. Usually I thought these things just up and die though. Clogged accumulator? IDK - nothing has been done to the a/c system since 2009 head gaskets.
2006 Chevy 2500 Silverado heater blows hot on driver's side and cold on passenger side. None of the controls change the temp. on the passenger side.
View 2 RepliesMy manual heat/cold adjustment dial is working fine and transitions from heat to cold readily. However when in max heat, it is blowing luke warm. The higher the RPMs going down the road the warmer it blows (still not near as hot as normal), then idling at stop lights or in park it goes back to warm only.
My engine temperature is running normal at all RPM levels while driving and idling. Partially clogged heater core maybe, where higher RPMs force more water through it? I assume its not the water pump or thermostat since my operating temperature is staying normal...
Well I was recharging my a/c yesterday because the system was low so I used one of them 24oz cans and now I am getting cold air out of my passenger side and luke warm air out of my driver side vents. Also if I switch to the different vents I don't get anything out of the floor only. I get air out when I select it, but it's coming out of the defrost. Other than that everything else works just fine, just no floor. I've read issues with the blend doors but my vehicle doesn't have the dual climate controls so I'm at a loss...
View 4 RepliesI 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.
View 1 RepliesThis one has me stumped, and I can't find a rational explanation on the net but it appears to be a known problem. I have a friend with an '06 Nissan Pathfinder that has climate control with dual zones (front and rear) that fails to blow hot (in front) when the vehicle is stationary and the rear heater is on. I used to wrench for a living so I've eliminated the obvious. The front blows hot air when the vehicle is in motion and also when stationary and the rear climate controls are off. So clearly it would seem to me that the issue probably lies in the switching of ventilation ducts from hot to cold. I'm not familiar enough with the system to proffer a solution though. The way I see it it's probably a sensor at best, an issue with the climate control unit itself at worst, or some sort of bizarre mechanical malfunction involving the vents closing when they should be passing air from across the heater core to the entire interior.
I haven't spent much time diagnosing the issue mainly because I don't do it for a living anymore. Hot air comes out of the front when the car is warm, stationary, and the rear blower motor is off. My friend who isn't very technical and speaks English as a second language tells me that when the rear heat is on it blows cold in the front while the vehicle is stationary (in Park or perhaps just when stopped for an extended period i.e. at a traffic light).