Question about 2003 Chevrolet Malibu

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Bleed coolant system

HOW TO BLEED THE COOLANT SYSTEM CORRECTLY TO GET ALL AIR POCKETS OUT OF LINES AND RADIATOR/HEATER CORE AND LINES

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Old methos id to leave the raditor cap off and squeeze the coolant hoses to get the air out.

Posted on Feb 05, 2010

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Posted on Jan 02, 2017

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3l diesel . hilux .pressure in radiator


bleed any air out by loosening off the highest hose ( heater hose )
run with the heater open (on) to move any air out of the heater core
normally not problem with toyota but worth the check first

it could be a head gasket or cracked head
have a compression test done to determine the problem

Jan 02, 2017 | Cars & Trucks

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05 grand prix........if it need new heating core, what will bleeding the radiator do...


Bleeding air out of the system will purge also air out of heater core. Sometimes you may need to add a "flushing tee" (available from an autoparts store) to get some trapped air out of system.

If the air is not removed, if an air pocket is in the heater, you get no heat because coolant cannot move through at an adequate rate to be useful. In other areas it can cause hot spots in the engie that lead to cracked heads, blown head gaskets, or an engine that does not run well.

Feb 12, 2012 | 2005 Pontiac Grand Prix

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When are are trying to release air pockets to the heater core what and where are the valves. 1999 Chyrler Seabring JXI V6 2.5


You don't need to bleed the coolant systems in 1999. Fill the radiator and fill the overflow to a point mid way between the cold and full lines. Warm up the engine until the fans cycle on and off. Let engine cool down and check level in the overflow. Add as needed and keep a watch for a couple of weeks. Any air in the system will be pushed out of the radiator into the overflow bottle. When the engine cools down it pull coolant from the overflow back into the radiator.

Mar 01, 2011 | 1999 Chrysler Sebring

1 Answer

Replaced thermostat and flushed out heater core 3 times 3 times it was cloggged, flushed system twice got good radiator flow and ther very hot just heat like luke warm one line in to core hot one oming out...


If the heater core is not damaged or leaking ie: if you don't see coolant on the INSIDE of your windshield or coolant on the floor inside the car then chances are you may just need to BLEED the radiator.

remove radiator cap

Fill coolant resovoir to the cold line if the engine is cold from sitting overnight.

Start engine with cap off

Wait till engine gets hot

While waiting you will see a big gurgle of air bubbles come out and the coolant level will drop

Fill the radiator with more coolant to compensate.

When the fans come on and it stops gurgling air install the radiator cap

You are done

Watch the coolant level for the next few days and top off in the resovoir as needed to keep it filled.

Your heat should be very hot now providing you installed the correct oem thermostat correctly.

Hope this helps

Mar 31, 2010 | 2001 Kia Spectra

1 Answer

Im getting no heat in my 1999 Pontiac Grand Am, I just replaced the lower and upper in take gaskets due to them leaking and the thermostat, I have bleed the system numerous times and I was told that I have...


Put your heater temperature control in the max position on(this opens the valve for coolant flow through the heater core). Top off the radiator and the coolant resevoir. Make sure the cap is on tight and bring the engine up to operating temperature. Shut off engine, allow to cool, and top off the radiator again. Repeat these steps until you are sure it will not take anymore coolant. Drive the car at speed for 5 or 10 miles and recheck again when cool. It takes awhile to work air out of the system with multiple openings of the thermostat.

Jan 04, 2010 | 1999 Pontiac Grand Am GT

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2002 Hyundai Elantra, thermostat, radiator, and fluid has been


the solenoid that opens the hot water into the coil is not opening

Dec 31, 2009 | 2001 Hyundai Elantra

1 Answer

Heater not working


The Navigator has rear air, so coolant lines run to a heater core in the rear. It will help if you elevate the front of the truck on a set of ramps or incline. Turn the heat for both front and rear. Run the truck and add coolant as needed until all the bubbles come out of the coolant tank. You can tell when you get coolant to the rear when hot air blows from the vents. By raising the front of the truck you allow the the air in the lines to bleed to the front.

Jun 22, 2009 | 2001 Lincoln Navigator

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No Heat In My Honda Civic.


heater core maybe going bad

Feb 25, 2009 | 1994 Honda Civic

1 Answer

2000 expedition heat problem


first of all I would make sure the car has proper amount of coolant and you are right it is very possible you have an air pocket in the system also ask your self did you change the thermastat after you did the heater core when the car is cold make sure there is coolant at the cold mark on the reservior bottle because you might not have enough coolant then start the car and get it up to temp and if the coolant goes not go up to the hot mark when the car gets to temp you do not have enought coolant just keep adding coolant and you will see the bubble after the thermastat opens

Jan 02, 2009 | 1999 Ford Expedition

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