Question about 2002 Chevrolet Malibu
Pump went bad put on new one and a superstat thermostat started boiling over after new stuff on ,bled air out of system still same thing.antifreeze too expisive to bleed everyday some air comes out then solid fluid close bleeder ,,good for while then boils over again. even put on new tank and cap
I guess you have either the 3.4 or the 3.5 with the very common GM intake manifold like. . I do hundreds in my garage
Posted on Oct 29, 2012
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Posted on Jan 02, 2017
SOURCE: 1999 Malibu Overheating
i would take the radiator to a radiator shop and have it flow tested sometimes they are hard to bleed the air out i usually hook my coolant pressure tester up and push the air out
Posted on Sep 22, 2008
Alot of times, the symptoms you describe could indicate that you have a lower intake gasket leak. Sometimes it is difficult to diagnose because the temp guage only reads the temp at a specific point and that does not reflect the temp at all points in the motor. I agree with the first suggestion that you shoud run your finger underneath the water pump pulley to see if the weep hole is leaking but it is more likely that you are sucking in air pockets through your intake gasket. Check the valley underneath your air inlet (on the top of the motor) for coolant. And also, green (glycol) based coolant has been known to damage aluminum radiators.
Posted on Oct 17, 2008
Sounds like your head gasket has a leak. I would also check your dip stick. If there is coolant mixed with the oil also. Then it is your head gasket.
Posted on Feb 03, 2009
SOURCE: Help with cooling system!!
OK, firstly The basis that a cars cooling system runs on is very simple. The system is a pressurized cycle that moves the coolant around, along with the heat, and is slowest in the radiator to allow heat to escape. If the system is not pressurized then the cycle will not work properly and coolant will not move.
If there is air in the system this can create what would seem like a blockage. 'bleeding the system is not the answer especially if you are using the drain on the radiator. That drain is only for draining fluid not air.
If air blockage is the problem then what you do is open the system at the highest point possible. this is usually a hose at the top of the radiator or something, whatever is easiest. Then find the other hose attached to the radiator, lower, higher makes no difference. then simply squeeze the second hose. this will 'burp' the air out do this for a while until all that happens is fliud is pushed out repeatedly.
then reattach the top hose and top up the radiator, and go for a drive.
If this doesn't fix the problem then air is not the problem.
Posted on Jun 11, 2009
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