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In 2005 chevy impala the heater only gets warm sometimes. Other times it blows cold air. I put fresh antifreeze in. And there is no water on the floor of the car

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The adding adding coolant means you have a leak somewhere, and low coolant level will cause this. How often do you check the fluid levels? Check for leaking hoses, weak radiator or expansion tank cap, leak at the water pump, and leaks around the radiator.

Posted on Nov 13, 2014

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I have a 2007 Saturn, Aura. Heater does not blow hot, slow coolant leak, & it also over heats. Please help! I'm freezing when I'm in my car!!!


You need to fix the coolant leak, then refill and bleed cooling system, then you will get heat and cure overheating problem too

Dec 16, 2015 | Cars & Trucks

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I have a 2003 chevy impala. Just recently come acrossed in issue where the heater blows nothing but cold air even with the temp gauge going as high as it can get. Weather its at an idle or being driven....


providing your coolant is full cause low coolant will cause no heat
and your temp gauge is normal in the middle then most likely u have a bad blend door actuator usually on the passenger side

Feb 25, 2015 | 2003 Chevrolet Impala

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2008 impala only gets warm air blowing when driving ,also can hear bubbling from passenger side near firewall


It could be your heater core or check your over flow tank for the radiator to see if it is your antifreeze is up to the line marked on the side of tank and check the over flow hose, make sure the clamps are tight.

Nov 22, 2013 | 2008 Chevrolet Impala LT

2 Answers

Why would my heater blow out cool air when sitting still and then hot air when going down the road and then it's not all that hot


Try flushing or blowing high pressure air through the heater core lines. its sludge build up and need to be flushed through heater core only. check antifreeze fluid level. only put in straight antifreeze, do not mix. most people do not know what mixture should be, so be safe and add straight, it will not hurt it, i run 100% straight antifreeze and never had a problem or worry about it ever freezing and cracking my block, heads or radiator cracking.

Jan 29, 2012 | 2001 Daewoo Nubira

1 Answer

2005 Impala, when I get to a stop, hot coolant temp message flashes and air gets warm, when I start driving the message turns off and air starts to blow cold again. Any ideas?


You sound like you are low on fluid or your thermosstate needs to be change to proper weather (winter or summer). Check it out. Hope you didn't use pure antifreeze ! 50/50 mix... or premixed.

Jul 01, 2011 | 2005 Chevrolet Impala

1 Answer

Check engine licht comes on after driving for a few days wat do i look for?


check your thermostat and make sure you have antifreeze 50/50. My 2000 Chevy impala was blowing cold air, but the previous owner had put some radiator stop leak in the radiator that clogged the whole system. I used a garden hose and flushed the heater core and the water pump.

Feb 03, 2011 | 2004 Chevrolet Impala

2 Answers

Heater is blowing luke warm air. does not get any hotter


Quite a few idea's come to mind.
1) Thermostat is stuck open, causing the engine to run cool.
2) The vacuum valve that opens and closes the air "flap" is stuck open, allowing cool air in all the time.
3) The vacuum valve that opens and closes the line that feeds the heater core isn't opening all the way.

Jan 30, 2010 | 2004 Chevrolet Impala

2 Answers

I have a 2000 Chevy Silverado pickup, and the heater will not blow hot air. I replaced the thermostat, and nothing changed. The radiator was flushed and filled in the last two months as well. I have all...


once truck is warm check both heater core hoses to make sure they are both warm if not then check the cold water valve could be stuck shut not allowing coolant to travel in to heater core.

Jan 05, 2010 | 2000 Chevrolet Silverado 1500

1 Answer

Heater blowing cold both sides


Does it blow warm air when you drive the car? If so its the water pump.

Could also be air in the coolant system

Also have the cylinder head pressure tested to rule out a hblown head gasket
Hope this helps

Regards
Steve

Dec 11, 2008 | 2005 Chevrolet Impala

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