Mechanics

CHEVROLET MALIBU HEATER PROBLEM

2003 Chevrolet Malibu • 108,000 miles

Where can I find the intake and out flow hoses to the heater core to flush it. It might be clogged. I just done a complete a full gasket change on the gm 3100 engine. Amd now my car keeps over heating. Trying to figure out how to burp the lines and if that font work. How do I flush the heater core. Wheres the hose kocation. Or diagram.
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Pmannin
January 21, 2013.



Did you torque the head bolts the correct torque and torque pattern?

Saturntech9
Jan 23, 2013.
Yes I did 44 ft lbs and a second time at 95 degrees.

Tiny
Pmannin
Jan 23, 2013.
There is no bleeding procedure for this car let's try this remove the thermostat and let's see if it still overheats?I had a grand am with a quad four engine put in a brand new thermostat in it. The engine was overheating only one radiator was getting hot and the radiator fan was blowing cold air from the radiator. Removed the thermostat and it didn't overheat hot air out of the radiator and both hose got hot. Put in another thermostat and it worked.

Saturntech9
Jan 23, 2013.
Ok will do. I called autozone today amd they said something about getting air out of my lines by rumning the car with the radiator cap off. Is that true. I will keep u posted.

Tiny
Pmannin
Jan 23, 2013.
I looked up your car on my Mitchell on demand for coolant replacement and refill it just says fill the coolant let it run and add coolant as needed as the air works its way out. Running it with the cap off can be dicey that hot coolant doesn't blow all over you when it gets hot. Keep me posted on what you find.

Saturntech9
Jan 23, 2013.
Ok I put the thermo in with factpry gasket. No over heat but shit no heat out of heater. And also the hose that runs to the water pump is hot so is the hose from the radiator. To thermostat

Tiny
Pmannin
Jan 23, 2013.
Alright we fixed one problem at least. When its hot see if both heater hoses going into your heater core at the firewall are both too hot to hold?

Saturntech9
Jan 23, 2013.
No both hoses a just barley warm.

Tiny
Pmannin
Jan 25, 2013.
Are the hoses kinked?There is no heater control valve on that car. Is the heater core clear and not plugged?

Saturntech9
Jan 25, 2013.
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