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Theres a couple of things that can cause this. First, check ALL the hoses to be sure you dont have a leak. make sure the radiator and reservoir are not leaking. Then you need to check the thermostat. The easiest way i know to do this is run the engine to normal temp, providing you can do this without overheating.
there are two hoses coming out of your radiator, one is coolant to the engine, one is the warm coolant back to the radiator. Touch them both, CAREFULLY DO NOT GET BURNT or hurt by any other engine parts such as the engine fan!. if one of them is WAY cooler than the other your thermostat is stuck and you need to replace it.
You may have a head gasket blown,if you are losing coolant and do not see any puddles, like this coolant has "mysteriously vanished" get this checked out!
another possibility if your heater core is shot, if its not the thermostat, your hoses are all intact and your radiator and reservoir are not leaking, this is likely your problem.
OR, you may have a water pump problem, if you have a large puddle under your engine, not near the radiator, get this checked by a professional mechanic ASAP.
you can cause serious damage running a car hot.
What else can I help you with?
Heater problems on ford 1999 expedition?
the heater blows warm air when fan is on low but blows cold air when fan is turn to higher setting
Why would an engine run cold temp gauge says cold and the heater blows slightly warm air?
change t.stat
Ac blows warm air when it idles and cold when running?
a/c blows warm air when idles cold when running
Heater on but not blowing warm air?
heater on at idle and will not blow warm air. when moving it blows the warm air from the vents. what will cause this
Why would a 2000 Saturn heater only blowing warm air?
it is a heater. heat. it blows heat. warm air
Your climate control in your 1998 Ford E250 Cargo Van blows cold air when in heat position and sometimes it blows warm air when in the cold position?
Your climate control in your 1998 Ford E250 Cargo Van blows cold air when in heat position and sometimes it blows warm air when in the cold position?
How do you know if a thermostat in a 2001 Hyundai elantra needs to be replaced?
Engine will overheat or not get warm enough. As in the heater will only put out warm air. When you suspect that the thermostat may be defective, just replace it. Very inexpensive part.Engine will overheat or not get warm enough. As in the heater will only put out warm air. When you suspect that the thermostat may be defective, just replace it. Very inexpensive part.
You have replaced the water pump thermostat and bled the system on your 2000 Chevy venture it still blows cold to luke warm air any ideas thanks?
The heater core is plugged. Blow it out with a compressor. If that does not work replace the heater core.
Is a Jeep Wrangler cold in the winter?
Nope. If you have a soft top you won't even notice that its not a hard top. It stays just as warm as a hard top and the heater blows lots of hot air.
I have a 92 ford explorer I noticed that my temp. gauge fluctuates between warm and cold Could this be the heater core heater blows cold?
Check coolant level..... hot coolant runs through the heater core and the blower motor blow air across it to create hot air........most likely a failing thermostat and. Possibly a water pump on its way out.
My 2001 Chevy Tahoe ac blows cold when driving but blows warm when at an idle for too long?
You have a bad fan clutch..............
Does a heater in your house make your cold worse?
I don't think so because when we have a cold, it is best to keep oneself warm and thus the heater produce heat for us to keep warm. Unless we have a lousy heater which produce cold air instead of heat, haha!
