Question about Cars & Trucks

Open Question

Air trapped in cooling system

Flushed heater core,had great heat for a wk.then cold-flushed it again,had heat for 2days.it overheated yesterday and there was no heat! whats the correct procedure for bleeding the air out?

Posted by on

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

HI, Vehicle had no heat and was overheating, so we had the heater core flushed - twice. Didn't help. We changed the heater core and thermostat. Now vehicle is still overheating. What else do we check?


You first make sure that the cooling system is completely bled/purged of any trapped air, that can cause both symptoms, it that is done and you are sure you have purged all the air out then the head gasket would be most likely leaking.

Feb 08, 2017 | 2011 Dodge Nitro

1 Answer

Front heat blowing out cool air. Just flushed the system yesterday and got the air out and still nothing


With the vehicle up to operating temperature feel of the heater hoses going to the front heater core. if only one hose is hot then you either have a plugged up heater core or an air bubble trapped in it not letting water circulate. You might try loosening the top hose and try to burp the air out of it. Of might have to remove the hoses and try to blow compressed air through it backwards to free up the blockage.

Nov 24, 2015 | Cars & Trucks

1 Answer

Air conditioning not blowing cold


may have air trapped in it still or thermostat is not working properly..

Jan 26, 2014 | Hummer Cars & Trucks

1 Answer

No heat


Air pocket is trap in the cooling system..

Put you car onto a pair of oil change ramp / or steep hill with radiator cap off (when cold).

Look for air bubbles to purge for the system.

Jan 13, 2014 | 1995 Ford Crown Victoria

1 Answer

Heater problems 2009 dodge nitro v6.


Possible, with rad cap off, let vehicle idle until coolant fan comes on then shut vehicle off for 30 minute cool down. Top up rad, install cap and drive and recheck heater operation and any overheating.

Jan 03, 2014 | Dodge Nitro Cars & Trucks

3 Answers

No heat , replaced radiator , water pump, rad. cap , hoses and flushed system twice.blows cool air.whats left?


Thermostat.? if you haven't? Do it first then try it. While the car is running for a while touch the heater hoses that lead to the firewall. if one is cold and one is hot? You have a blocked Heater core. Follow the hoses back to the engine. Unconnect them both. By using a garden hose flush out the heater core do one side and then reverse by doing the other hose Lots of junk will come out so be care ful. Mistake people make is "Flushing the system" That doesn't mean your flushing the heater core.
Seeing that you have done everything else it could be the thermostat which you didn't list or the heater core being clogged. When you finished installing the thermostat and flushing the heater core out. Replenish the coolant system . If you have a bleeder on the thermostat housing? use it . loosen it and top off the fluid until you see fluid comeout of the bleeder. The system being air bound would cause no heat..

Jan 10, 2011 | 2000 Buick LeSabre

1 Answer

1997, Mercury Villager, NO HEAT. Flushed radiator, flushed heater core. Has a rear heating system, is there an additional heater core and maybe a valve in the rear heating system?


you have air trapped in system. If you could hang van like a deer in a tee, you could get the air out. Go to a sho with evac/fill equipment and have them purge the air. You are about 3 qts short of full

go here too. read cooling system files.

http://groups.yahoo.com/group/villagerquest/

Nov 27, 2010 | 1997 Mercury Villager

3 Answers

My heater is not working in my 2001 honda civic. Is it my thermostat?


Does the heater blow cold air from the vents or do you mean the there is no airflow from the vents? cold air from the dash vents when the heater control valve is set fully hot could be an air pocket in the cooling system. The radiator sits slightly lower than the engine causing air pockets to get trapped in the engine when you replace the coolant. you'll have to purge the cooling system to restore flow to the heater core. No airflow (blower motor inop) this could be a bad blower motor transistor. pin test the blower motor circuit.

Jan 06, 2010 | 2001 Honda Civic

1 Answer

No heat thermostat isopening and closing andfanis working sometimes you get a little barley warm air then it goes back to cold air also ck. eng. light is on


Ck Eng light probably not related.
The heater core is clogged. A bottle of cooling system "quick flush" may be all you need ($6 AutoZone).
There is also a complete flush system, but requires that you splice into the heater hose (I installed it on my Taurus - works great!).

By the way, there is a heater core bypass hose. It is connected to the two heater core hoses near the firewall. You may want to remove the two "Tee" fittings and use a 5/8" hose splicer so that the flush passes through the heater core at full force. Put the Tee's back in place after the flush.

If you remove the tee fittings and don't flush, the heater will work, but the core may eventually start leaking.

Oct 02, 2009 | 2001 Ford Taurus

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

19 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts

yadayada
yadayada

Level 3 Expert

75822 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Randy Ohler

Level 3 Expert

14585 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...