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Heater not working good

At 50 degrees the heat is barely warm.when blowing it blows out cool air

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  • 271 Answers

To warm your car, your car's heating system makes use of excess heat from the engine's internal combustion process. Diagnostic tools for car @http://www.obd2express.co.uk

Posted on Nov 02, 2012

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Posted on Jan 02, 2017

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dgjtex
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SOURCE: heater does not blow hot air, just cool air

You can put a higher temp thermostat and that should help, but it should at least have 170 degree air right now if it was working right. There are two other things you might check for, the diverter door make some sound when you switch from heat to cool and back, I can't tell you for sure if it is a manual, vacumn or electric but that would definitely cause it to blow cold air. There is also a valve which cuts off circulation to the heater core when your not using it. This valve will be in line with the heater hoses going to your heater core. I have seen some that were actually part of the heater core box. I feel pretty sure one of these will be your problem. Also if your car is low on coolant it would not heat properly. Hope this can help you!

Posted on Dec 15, 2008

  • 4 Answers

SOURCE: Heater on driver-side blows barely warm air other vents blow cold

the most probabale cause of this would be a disfunctional hear core if you replace your heater your heater will more than likley work the the way it's supposed to

Posted on Jan 18, 2009

  • 21 Answers

SOURCE: Heater

your blend doors are broken a common problem for the jeeps 1999-2004 e mail me at mrenc@msn.com and i will send you a link to a web site for a repair kit that will cost les than the 1200-1500 a dealer will charge to fix this

Posted on Dec 02, 2009

  • 161 Answers

SOURCE: Heater blows cool air instead of warm air

check your coolant level if it is low top it off. if it is full you may need to change your thermostat to get the temp back to normal. for the heat check the heater control valve to make sure it isn't stuck (heater control valve should be located against fire wall connected to heater hose.

Posted on Dec 07, 2009

  • 2 Answers

SOURCE: heater not working right in 1999 silverado

First check the coolant level if the engine is hot check the reserve jug on the firewall--if cold before start up remove the radiator cap and check coolant level add as needed. If the thermostat has been removed it needs to re-installed. It is possible that the heater hose(s) is stopped up. After letting it run for a period of time both heater hoses should be hot to the touch if they aren't something is restricting the flow of coolant the system needs to be drained and flushed. I have also see some vehicles form an air lock in the coolant system causing the same thing. It then needs to be (burped). This can be checked/done by removing the radiator cap while the vehicle is idleing and watching the water level in the radiator squeeze the upper radiator hose to see if the water/coolant level rises in the radiator. When you release the hose you may need to add some coolant this forces out the air. Hope one of these things. These are some of the cheapest fixes and if they don't work/help then you need to start looking at the heat control selector.

Posted on Dec 30, 2009

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Heater temp on high only bows luke warm air after driving. A/C works just fine.Plenty of cold air from it


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Heater not blowing enough heat


Check the thermostat and the water pump.

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Why would I not have heat? 2001 Dodge Ram 3500 truck. motor temp gets to 190 degrees after replacing faulty thermostat. but the heater don't blow hot air. blows cool to warm. everything moves and...


Stacey
sounds like your blower motor is OK so either the hot water is not getting through the heater core, or the air is not being routed across the heater core. If the hoses or core are blocked, that would do it or if an air door is not allowing the air to the core.

Hopefully it won't come to core removal, but this video should illustrate what is going on. There are also videos for unplugging the core. good luck

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Long time before heater blows warm air


That seems pretty normal, the heater works by blowing excess heat from the engine coolant. So the coolant has to be warmed completely for the heat to work, you can get a heater that plugs into your cigarette lighter that will heat the vehicle instantly.

Nov 12, 2013 | 2004 Chrysler Town & Country

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2008 Jeep Liberty-My heater was barely warm-blowing fine tho. Was told I had a plugged heater core and needed a new one. Had a new heater core put in and then my air conditioner stopped blowing cold air....


I woild be checking the vent controls as if the ac is working and the core was blocked then the air would be cool when the heat was selected but not changing Fixing the heater has resulted in a /c not being good enough to cool the air if the vent is not properly selecting. The point is that if the vent selection is not working properly (vacuum hoses) then the 2 faults will be related.

Oct 24, 2013 | Jeep Liberty Cars & Trucks

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1996 Honda Passport EX 3.0 Heater runs weak, the fan barely puts any air out, but I can hear it blowing. It also barely puts out warm air. With the temp. lever in cool it really blows. but as I slide it...


Is this a quantity of air problem or quality of the heat from the heater?
If its heat from the heater you need to first flysh and reverse flush your cooling system, includes radiator etc and use a good flushing agent first. Then replace heater water valve.
Refill and bleed out cooling system and get car up to temp.
When hot, feel pipes going into and out of heater matrix. On full heat they should both be roughly same temp, if not , replace matrix cos it must have collapsed.
Have yoy EML light checked at local garage using spec diagnostic tools.
Roger

Apr 24, 2017 | 1996 Honda Passport

1 Answer

When my car warms up the heater blows out warm but gradually gets cooler and cooler after about 10 min. It will stay cold ( about three degrees above outside temp.) It does this on cold days. And after you...


It may be the valve that controls the amount of water entering heating core but I'm wondering if your engine thermostat isn't stuck open. This is what controls the coolant temperature in your engine. It closes off while engine is off. It will remain closed after you start your car until the water warms to a certain temperature then it starts to open enough to keep your car at the proper operating temperature. If it stick open then it will take a lot longer for the engine to heat up and on smaller cars might never heat up enough for your heater. If you live in very cold climates such as where I live in Wyoming, we have to change to a higher degree thermostat so we have a good heater when it's 30 below zero.

Be very cautious here but one way you can check this is to put a piece of cardboard in front of your radiator and stop the airflow that cools your engine coolant. THIS WILL CAUSE YOUR CAR TO HEAT UP AND CAN CAUSE ENGINE DAMAGE IF IT OVERHEATS. Don't completely cover the radiator but if your heater warms up when you put the cardboard in front of radiator it's a good sign that your thermostat is stuck open and needs to be replaced.

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2001 pt cruiser


I recently had the same problem with my car. The solution for me was to remove the coolant lines going into the firewall(be sure to let it cool down first)and blow out the heater core with compressed air.I went from blowing barely luke warm air to awesome heat...good luck

Jan 14, 2009 | 2001 Chrysler PT Cruiser

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