LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

How do bleed the cooling system......

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Old Apr 27, 2003 | 11:22 PM
  #1  
irocdreamer's Avatar
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From: Austin, TX
How do bleed the cooling system......

I replaced the coolant sensor for the temp gauge last weekend, when we did I lost a lot of coolant out of the hole. After we replaced it I added more coolant. Well now the car runs a bit hotter so I think it has air in the system. How do I bleed the system?
Old Apr 28, 2003 | 12:05 AM
  #2  
Jay Z28's Avatar
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Joined: Nov 2000
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From: Champaign, IL, US
The way I've always done it was to run the car until it warmed up, then open up the bleed screws on the coolant lines by the thermostat. Once coolant starts flowing out of those lines, close them off and you should be good. Some people also turn their heater on full blast, but I don't think that is entirely necessary.

-Jay
Old Apr 28, 2003 | 12:24 AM
  #3  
ZLT195's Avatar
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Posts: 177
read this

and

this

You can use the search funtion for, Bleeding coolant system or something along those lines to get your answer.

Z~

Last edited by ZLT195; Apr 28, 2003 at 12:27 AM.
Old Apr 28, 2003 | 01:10 PM
  #4  
Janny's Avatar
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I've found that this works well.

Remove theromostat, and fill block.

Open vent nearest th thermostat and fill rad slowly till coolant comes out.

Close first vent open second, and keep topping rad up till coolant comes out of it.

Close second vent.

Finished.

No muss, no fuss, just go slow.
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