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    Another 3.9 overheat question after 12 hours of searching past posts

    Well last weekend I managed to change the degas bottle. Bled the system and it ran fine all week. Still waiting on the rest of the parts. But yesterday on a five minute drive the gauge went from normal to pegged out in about 2 seconds flat. Got car pulled over and opened hood. Degas cap was...
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    Another 3.9 overheat question after 12 hours of searching past posts

    My other train of thought was that it had only overheated twice in two weeks and now that I have opened up the system it is overheating everytime that I am not bleeding it correctly. But in every post it tells to follow it to the letter but there is no sort of troubleshooting if you encounter a...
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    Another 3.9 overheat question after 12 hours of searching past posts

    well in a perfect world I would love to put the jag housing and a brand new degas in it for her but thats a lot of coin in one shot. Will just have to see what she says. And from what I've read the dorman degas is junk so I can't advise her to go that route.
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    Another 3.9 overheat question after 12 hours of searching past posts

    so with air purged a cracked plastic will cause catostrophic temps after a 15 second load of 2,000 rpm. blows my mind. Guess plastic and hot liquid is just a recipe for problems. I will let my friend know. Thanks again.
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    Another 3.9 overheat question after 12 hours of searching past posts

    Thank you for your time. I guess what Im not understanding is why isn't the system just acting as an air pump when I try to bleed it? Im getting no air out at all during the bleeding process. only coolant. I would feel much more comfortable in replacing all of those parts at someone elses...
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    Another 3.9 overheat question after 12 hours of searching past posts

    I have not replaced any plastic. Is a low milage car and I figured any leaks from plastic would have shown up in pressure test. My train of thought was that if there was air entering the system that I would be seeing it quite a bit in the bleeding process. It is not my vehicle so I was trying...
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    Another 3.9 overheat question after 12 hours of searching past posts

    Hello all. Working on 2001 ls 3.9L. After an intermittent overheat issue I had mechanic pressure test system. He advised system was good and quoted 600 for a thermostat install. Decided to replace myself. Issue has come with the bleeding process: From the bleeding process linked in many forums...
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