Heater blows cold air
11-03-2003, 02:04 PM
#1
Does anyone read this
Thread Starter
Heater blows cold air
Anyone have this problem before? It's a 99tL with navi, when I hit the auto button then put it to 90 it doesn’t get hot. I have also tried doing it through the navi but still does not work. What could this be?
11-03-2003, 11:49 PM
#4
Does anyone read this
Thread Starter
Engine temp reads normal. But I will check the fluid. Could it be low enough to keep the engine cool but not enough for the heater? I sold the car to my cousin two days ago and they called saying the heat does not get hot. So I am going there tomorrow and I will check that. Thanks for the help guys.
11-04-2003, 08:16 AM
#5
Team Owner
Another thing I could think of is that perhaps the door that regulates how much hot/cold air to mix is broken.
I would think that if the coolent was low you would have a bigger problem then simply no heat in the car.
If you put the temp up (not all the way maybe 1 degree below max) does the fan come on and blow at full blast? If so that would probably mean that the thermostat for the interior is working. I said 1 degree below max because I believe if you put it all the way up that will force the fan to blow full. Don't quote me on that though.
I would think that if the coolent was low you would have a bigger problem then simply no heat in the car.
If you put the temp up (not all the way maybe 1 degree below max) does the fan come on and blow at full blast? If so that would probably mean that the thermostat for the interior is working. I said 1 degree below max because I believe if you put it all the way up that will force the fan to blow full. Don't quote me on that though.
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12-06-2003, 10:06 AM
#10
Flyin' and Drivin'
I had the same problem, and my dealer said it was my cold air intake... lol. Anyways, it just happened a couple times. I just turned the A/C on and off, and cranked everything to max heat and it worked.
12-08-2003, 01:47 PM
#12
Burning Brakes
Assuming your temp. guage reaches and maintains normal temp your thermostat is working. It's also safe to assume that your heater core is not plugged; it's not old.
Most likely, the servo motor that controls the baffle between the heater core and the AC evaporator is stuck, blocking off the heater core. The dealer can replace the faulty motor.
As a side note, have you been low on coolant recently; it's always possible that you have an air bubble in it, but not nearly as likely as the above.
Most likely, the servo motor that controls the baffle between the heater core and the AC evaporator is stuck, blocking off the heater core. The dealer can replace the faulty motor.
As a side note, have you been low on coolant recently; it's always possible that you have an air bubble in it, but not nearly as likely as the above.
12-08-2003, 07:55 PM
#13
Does anyone read this
Thread Starter
Originally posted by Severin
Assuming your temp. guage reaches and maintains normal temp your thermostat is working. It's also safe to assume that your heater core is not plugged; it's not old.
Most likely, the servo motor that controls the baffle between the heater core and the AC evaporator is stuck, blocking off the heater core. The dealer can replace the faulty motor.
As a side note, have you been low on coolant recently; it's always possible that you have an air bubble in it, but not nearly as likely as the above.
Assuming your temp. guage reaches and maintains normal temp your thermostat is working. It's also safe to assume that your heater core is not plugged; it's not old.
Most likely, the servo motor that controls the baffle between the heater core and the AC evaporator is stuck, blocking off the heater core. The dealer can replace the faulty motor.
As a side note, have you been low on coolant recently; it's always possible that you have an air bubble in it, but not nearly as likely as the above.
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