Question about 1994 GMC Safari

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What is an air pocket in the cooling system?how does it get there?

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Air pocket is air in the cooling system and it can get there from low coolant or someone draining and filling the system, but it should work its way out by fill radiator and running engine until thermostant opens, some newer cars are a little harder but this one is smiple. hope this helps.

Posted on Aug 30, 2010

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Air pockets in coolling system


Sometimes air pockets form in the cooling system when the coolant has been drained. The will result is engine overheating. This happens even after the coolant has been added and the cooling system appears to be full. Air can enter the cooling system after changing the water pump or lower radiator hose. This will affect the engine's ability to maintain proper operating temperature.
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Apr 16, 2016 | Cars & Trucks

1 Answer

Idle fluctuates


The computer enriches the fuel mixture and then leans it out to see fluctuation and changes at the oxygen sensor readings, these changes forth and back can often be noticed, also AC pumps cycle from time to time for short bursts just to keep them freed up i think. when the AC clutch kicks in the idle will also fluctuate, again it is normal to some degree. As for air pockets fill the cooling system there should be no air pockets at all nothing but coolant. Air does a poor job of drawing heat from the engine from the inside of a cooling system however it works well outside the cooling system.

Feb 15, 2015 | 2001 Lincoln LS

1 Answer

Mercedes-Benz e230 air pocket in cooling system


The shop is responsible for this. Driving it won't get the air out. There is a tool required to fill the cooling system and bleed out the air. If your 'mechanic' is really what he claims to be he should know that.

Apr 18, 2014 | 2005 Mercedes-Benz Mercedes Benz E320 Cdi

1 Answer

How can I bleed a air pocket on a 95 Toyota Camry do they have a bleeder valve if so where is it located


Air pocket in the cooling system i'm assuming?
Remove radiator cap when the engine has cooled down (verify by collapsing the upper radiator hose to make sure there is no pressure remaining) start the vehicle, turn your climate control to high fan, hottest temp. Add coolant to the radiator as needed. You should have good heat coming out of defrost when the cooling system is successfully bled out.

Jul 19, 2013 | Cars & Trucks

1 Answer

Why does my 2003 jaguar s type keeps overheating after I replaced the thermostat. I took i to the dealer and they told me everything checked out ok but told me to replace thermostat.


These cars are terrible for holding air pockets once the cooling system has been drained.
Run the heater on max and let the car cool, top off the coolant, and repeat the process several times. Also make sure the electric fan assy is functioning. There is a module on the side of the fan assy which occasionally fails. if the fan is working then you probably have air pockets in the cooling system.

Oct 07, 2010 | 2000 Jaguar S-Type

1 Answer

I have a 1999 Porsche 911 it overheats on side street but not on the freeway. All radiator fan works including engine fan. Any suggestion?


air pockets develop over time and what most people do not realise is that the cooling system of the car loses water through damp over time. when there is not enough water in the cooling system it pushes air through which rapidly heats up. on the highway higher speeds cool things down. but lower speeds not. open the waterbottle cap when the car is totally cooled off. not hot. never when its hot. this will create more air pockets in the cooling system. open the bottle cap and fill it up full. start the engine and add water. if you car has an aircon switch it on to full. this will push air pocket out off your cooling system. as bubbles blow out keep on filling water until cooling system is bled. good luck

May 07, 2010 | Porsche 911 Cars & Trucks

2 Answers

02 Infiniti I-35 3.5 heater air not hot enough...had system flushed and new themostat..vents and blower motor working fine.


Make sure that the radiator fan is going off like it is suppose too. Also, some vehicles have a shut off on the water inlet hose to by-pass the heater core for the A/C when it is running in the summer. This could be malfunctioning.

Jan 15, 2010 | 2004 Infiniti I35

1 Answer

The engine is overheating at a stop but then goes down when I hit the gas. I have no Heat in the car. The radiator is full of coolant.


You may have one of several issues. Overheating at a stop indicates an inoperative radiator cooling fan, The no heat issue is more than likely being caused by an air pocket left in the cooling system from the overheating. I would suggst verifyuing the operation of the cooling fans, and then check for any air pockets in the cooling system.

Dec 22, 2009 | 1996 Toyota Camry

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No Heat In My Honda Civic.


heater core maybe going bad

Feb 25, 2009 | 1994 Honda Civic

1 Answer

2002 nissan altima - doesn't have any heat


nissan altima notorious for air pockets in cooling system , bleed system well , make sure cooling system is topped off and retry , cheers .

Jan 12, 2009 | 2002 Nissan Altima

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