Posted: Thu Jun 03, 2010 2:48 am Post subject: Just changed Thermostat. Bleeding questions!
So I changed the thermostat and ran some heavy duty coolant line to bypass the TB. It was a PITA to change. If my friend wouldn't have showed up with his stubby wrenches I never would have gotten it done. But don't know if I bled the system right. I filled radiator, let car warm up, let the thermostat kick in a few times, then turned it off and popped the radiator cap and saw and heard the air rush out of the radiator into the resovoir and into the atmosphere. I repeated this a couple times, and then drove it for a few, and repeated the popping the cap deal. And the last time I popped it fluid came out instead of just air so I think i am good. I know this wasn't the best way to do the bleeding, but I have never done it before and it seemed to work. But bow I have coolant everywhere in my engine bay!!!lol time for a hose and some degreaser! But let me know if you think I should do something else to bleed it. thanks.
yes, there are two bleeder valves on the 3.4, one on the thermostat housing (the part you had to take off to get to the t-stat) and the other one is at the top of the t-stat bypass pillar that comes off the water pump.
Coolant flows front to back (left to right) in the engine so bleed the bypass pillar first then once the t-stat is open, bleed the housing bleeder.
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