Question about 2000 Ford Taurus

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Heater blows cold when motor is idleing, Heater was flushed and water level is ok. workes good at highway speed

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You have a partially blocked heater core. This is not a repair for the average DIYer. Any radiator shop can repair it by rodding, or just buy a new one - they're less than $100 but a real job to get out. I'd take it to a professional or if you're game, pick up Chiltons for 2000 Taurus and give it a go.

Posted on Feb 21, 2010

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2014 challenger 60.000 km no heat just cold air


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Jul 03, 2016 | 2014 Dodge Challenger

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In cold weather heater will not blow warm air unless at idle stopped. when at highway speed blows cold air


check and make sure the radiator is full of antifreeze take off the radiator cap and top off the radiator then take your hand and cover the hole where the cap goes and squeeze the top radiator hose a few times to help it go down that way if there is a air pocket somewhere it will help push it out when you thank your done top off again and replace the cap and try

Jan 27, 2014 | 2003 Ford Focus

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Heater blows cold


if water temp ok sounds like not enough hot water getting to heater core maybe cooling system flush will help

Jan 04, 2014 | Cadillac DeVille Cars & Trucks

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2000 dodge stratus. Heater only works at idle, when driving at high speeds, heater blows cold and thermostat gauge goes to cold. Back flushed heater core, new thermostat any ideas?


I'd say you have a faulty thermostat, be it new or not. If your temperature gauge goes to cold as your engine is taking you down the highway, the thermostat is not doing its job. The temperature should never come down to below normal until engine is shut off...

Dec 03, 2013 | 2000 Dodge Stratus

1 Answer

2005 Chevrolet Silverado heater blows cold air when idling. When truck is running, heater works normal.


Sounds like the coolant level is a bit low. I have also seen a water pump problem do this. It is rare
but I have seen it. You can also remove the heater core hoses from the heater core and flush it back and forth a few times with the water hose. The dexcool sometimes causes a bit of a restriction. It can solidify if it hasn't been flushed. Flushing the cooling system every 2 years helps alot.

Paul

Dec 14, 2010 | Chevrolet Silverado 1500 Cars & Trucks

2 Answers

2004 impala..The heater blows cold air when at idle or when i stop at a stop sign. When I am driving the heater is blowing hot air. the antifreeze level is OK and the engine is at operating temp. Any...


A couple of things come to mind. One is the thermostat is hanging open. The other is the cooling fans are running when they shouldn't. With the car idling, open the hood and see if the fans are blowing. Do you have a temperature gauge in the dash? Should be reading about 200 degrees all the time. Maybe a little less at highway speeds but not below 190 degrees.
The other thing is the heater core may be plugged. Have you changed the anti-freeze and flushed the system recently? Added any StopLeak to the radiator?
Also... if the heater temp controls are activated by vacuum (I'm not sure on your model), you may have a leaky vac hose to the heater control panel.
Could be any of these and could something else. I tried to hit the obvious ones... :)

Good Luck.

Nov 23, 2010 | 2004 Chevrolet Impala

1 Answer

Heater only blows cold air when idleing but blows hot air when driving at highway speeds. coolant level is fine.


you have air trapped in cooling system. Go to a shop that uses evacuate & fill equipment and have them flush system and burp air. SHould cost about $65. Make sure they have evac/fill equipment

Feb 28, 2010 | 2006 Nissan Altima

1 Answer

2005 nissan altima heater blows cold air when stopped and blows hot air when going down the highway. What could be the problem?


Check your coolant level. If it is low, what you describe will happen. Water pump works faster as rpm's increase, managing to get hot coolant to heater core (highway speeds). At idle, pump is not working fast enough to get the coolant to the heater core.

Feb 09, 2010 | 2005 Nissan Altima

1 Answer

04 civic heater blows cold air at idle


you should have hot water on all rad. hoses when the motor is running at a norm. temp. the water is not going through the heater core like it should. you have cutoff valve bad low water are a stopped heater.try a hoter thermostat if none of the above are true.

Jan 18, 2009 | 2004 Honda Civic

3 Answers

Heater blows cold air when idle


Sounds like you may have a partially plugged heater core. You could flush this out separately, from flushing radiator & engine block. Diconnect heater hoses going to your heater core and clamp off, so not to loose coolant from engine. Now hook up separate hose to one side of heater core pipe and flush out with typical garden hose. Repeat procedure on both heater core inlets. Reconnect original heater hoses and test difference. You may have to add an additional litre of antifreeze. If this don't work i suggest changing heater core. Good luck.........Ron.

Jan 03, 2009 | 2000 Jeep Grand Cherokee

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