i'm working on a car and it's still over heating.

10

Asked by Oct 16, 2016 at 02:26 PM about the 2001 Pontiac Sunfire SE Coupe

Question type: Maintenance & Repair

i have a friends 2001 Pontiac sunfire in my shop, with a 2.2.
it slowly over heats while idling. I've already changed the water pump and the
thermostat, i'm stumped. the fans kick on, and it seems to draw coolant fine
when i add it, but its losing it through the overflow tube with the cap on.

6 Answers

16,850

How are you bleeding air from the system ?

16,850

Also there is a couple of more things to check out. Is the radiator or if the A.C condenser sets in front of radiator is it clogged with dirt and bugs restricting air flow across the coils or cooling ports in engine block clogged clean with a good cooling system flush.

10

Ive just been letting the air burp itself out of the burp tank/radiator cap

56,855

Pull the cooling system down into a vacuum. Then refill it. The instructions with the tool will explain how. That way you can be 100% sure all the air is out. HTH. -Jim

10

Would i just rent a vacuum at a auto store?

1 out of 1 people think this is helpful.
56,855

You can probably do that. The vacuum tool I have needs to be hooked up to an air compressor. The compressed air creates a venturi which pulls the cooling system into a vacuum. HTH. -Jim

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