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Chysler T&C 3.6 Pentastar coolant bleeding FOREVER #5327146 01/19/20 02:53 PM
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Silver Offline OP
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I did what I thought would be a simple radiator drain and fill and it's been bleeding out the bleeder screw now for over an hour. Radiator cap is tight, reservoir full and hasn't move at all during this time. Should I just let it keep running and venting? There's no leaks, it's been fine till I decided to do maintenance! Temp 230-240 with bleed screw loose.

2016 Town and Country

Last edited by Silver; 01/19/20 02:53 PM.
Re: Chysler T&C 3.6 Pentastar coolant bleeding FOREVER [Re: Silver] #5327159 01/19/20 03:26 PM
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Slick17601 Offline
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Did you rev the engine to try and move the are through?


2018 RAM Bighorn 5.7
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Re: Chysler T&C 3.6 Pentastar coolant bleeding FOREVER [Re: Silver] #5327162 01/19/20 03:37 PM
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KrisZ Online Content
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I would keep the radiator cap off as well. It should speed up the bleeding process. Make sure to keep an eye on the level in the radiator, not the overflow tank, and keep topping off until it stops dropping.

Last edited by KrisZ; 01/19/20 03:37 PM.

2015 Grand Caravan 3.6L - 35k miles.
2006 Mazda 3 2.0L - 186k miles
Re: Chysler T&C 3.6 Pentastar coolant bleeding FOREVER [Re: Silver] #5327169 01/19/20 03:56 PM
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When I rev it it just spews more, but it also climbs towards 240 so I wasn't comfortable revving it much.

I shut it off, took the radiator cap off (wasn't hot), put about 3 quarts in it until it filled up, put the cap back on quick and now the bleed valve either spews coolant, or nothing at all depending on whether the thermostat is open I guess. So I think I'm to a point where it's ok.

I guess I was bleeding a LOT of radiator empty space out through the bleed valve.

I think I may have messed up by not topping off the radiator with the cap off. When I first had the radiator full it kept burping coolant out. I let it run for a few minutes, came back out and put the cap on. When I did that I think I closed up a bunch of air in the radiator. I think what I should have done was make sure the radiator was full before I put the cap on.

Last edited by Silver; 01/19/20 03:59 PM.
Re: Chysler T&C 3.6 Pentastar coolant bleeding FOREVER [Re: Silver] #5327174 01/19/20 04:06 PM
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sloinker Offline
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Close everything up until you have temperature and then crack the bleed a few times over the course of about 10 minutes to get out the trapped air. Turn front and back heaters,(if equipped), to high temp and high fan. After this drive the vehicle for a few miles and park overnight. Make sure the overflow bottle is at high hot level before parking. Hopefully the replacement coolant matches the stuff you drained out.

Last edited by sloinker; 01/19/20 04:07 PM. Reason: Slipped in MOPAR juice.

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Re: Chysler T&C 3.6 Pentastar coolant bleeding FOREVER [Re: KrisZ] #5327186 01/19/20 04:28 PM
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eljefino Offline
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Originally Posted by KrisZ
I would keep the radiator cap off as well. It should speed up the bleeding process. Make sure to keep an eye on the level in the radiator, not the overflow tank, and keep topping off until it stops dropping.


If the cap were the high spot, they wouldn't need the bleeder.

I'd follow dodges instructions, but, barring that, warm it up with the cap off but slam the cap on when it starts overflowing from there. Then open the bleeder, get the air out, close it, and let everything cool, sucking coolant in from the overflow tank.

Let it cool, note the overflow tank level, top off if required, note level, repeat.

Go for a drive facing up the steepest hill you can find, and gun it in low gear.

Re: Chysler T&C 3.6 Pentastar coolant bleeding FOREVER [Re: Silver] #5327240 01/19/20 05:35 PM
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slacktide_bitog Offline
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The Lisle coolant funnel is awesome smile

Re: Chysler T&C 3.6 Pentastar coolant bleeding FOREVER [Re: Silver] #5327569 01/20/20 07:19 AM
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Trav Offline
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Time to buy a vacuum filler so you don't go through this again.


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