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How do I bleed both coolant systems once split?

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Old 07-04-2015, 09:51 AM
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2015 Jeep Grand Cherokee, 2005 E55
How do I bleed both coolant systems once split?

I just split cooling with the FTP engine tank. From what I know, I can bleed the s/c - h/e system through the stock bleeder valve. But how do I bleed the motor - radiator side of the system?
Old 07-04-2015, 10:19 AM
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I think you may just assume that now your engine coolant system is self bleeding, since you have separated it from the high point that is the intercooler lines.

A more important question is, how are you bleeding your split system? Unless your pump runs all the time, (early MY cars), you'll have to jump power to it, or activate via STAR.

(I guess you could try to drive with a hose from the bleed point into your tank, but that would be a little tricky)
Old 07-04-2015, 10:24 AM
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Well the pump runs when the car is above 2000 rpms. But it looks to me like the pump only circulates the intercooler side of the system. I can bleed that side through one of the upper ic lines. But I'm not sure how to bleed the system from the stock coolant reservoir.
Old 07-04-2015, 10:39 AM
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Originally Posted by mda0303
Well the pump runs when the car is above 2000 rpms.

I don't think that's ever been confirmed, but there's still a good chance that the pump will run. You can just try it I guess.
Again, I think you can assume that the other side of the system will bleed itself. Just drive around, and keep an eye on the temperature.
Old 07-05-2015, 04:00 PM
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How do I bleed both coolant systems once split?

If you split the intercooler, and permanently connect the bleed hose to the new split reservoir, then the Ic system is then a self bleeder. I have mine setup that way and it works great. Search and you'll find some posts.
Old 07-05-2015, 04:09 PM
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Originally Posted by JoeNobody
If you split the intercooler, and permanently connect the bleed hose to the new split reservoir, then the Ic system is then a self bleeder. I have mine setup that way and it works great. Search and you'll find some posts.
Do you have any pics of your setup? Sounds interesting. Never heard of that.

Does anyone have any facts about how the IC pump turns on? Some say its on all the time some say it activates when supercharger is engaged.

Does the year matter? Any hard facts?
Old 07-05-2015, 04:12 PM
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Well once the system is split, I don't think there is anything BUT the IC pump to circulate fluid on that side. So if fluid is coming out of the normally capped bleeder then the pump would have to be on right?
Old 07-05-2015, 09:47 PM
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When the engine is hot and you kick the throttle a little when driving...the pump will come on and normally stay on. Then just come back to your garage or where ever and run a small hose from the cap in the line and run it {the hose} into the reservoir.
I always know when my pump is on because I have a small led light wired in that is on the dash......light on ...pump running. The pump will never turn on if I drive real easy but as soon as I give it more than 30-40 percent throttle it comes on and will stay on.
Old 07-26-2015, 07:40 PM
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I just did my cooling split. I was just starting to wonder why I wasn't getting any coolant flowing at the bleeder valve on the upper IC pipe til I read this thread. Looks like I'll have to run it a bit harder since I was logging 115-120 degrees at idle on the intake temps and I got a little discouraged. I revved it a little above 2k for 5-10sec and the temps dipped for a brief moment downto 110. Definitely some air in the lines tho.

Last edited by Wasabiz55; 07-26-2015 at 07:43 PM.
Old 05-28-2017, 06:18 AM
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E55 AMG V8 Kompressor 2004 E 55 AMG Type: 5,439 cc (5.439 L; 331.9 cu in) Supercharged V8 Powe
Originally Posted by Wasabiz55
I just did my cooling split. I was just starting to wonder why I wasn't getting any coolant flowing at the bleeder valve on the upper IC pipe til I read this thread. Looks like I'll have to run it a bit harder since I was logging 115-120 degrees at idle on the intake temps and I got a little discouraged. I revved it a little above 2k for 5-10sec and the temps dipped for a brief moment downto 110. Definitely some air in the lines tho.
Sød u ever for that solved?
Bleeding by jumping ic pimp fuse
Old 08-11-2018, 07:27 AM
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E55 AMG V8 Kompressor 2004 E 55 AMG Type: 5,439 cc (5.439 L; 331.9 cu in) Supercharged V8 Powe
Correct method to bleed after split

Originally Posted by SuperChargerE55
Sød u ever for that solved?
Bleeding by jumping ic pimp fuse
just realized I never replied to you sorry for that.
First please remember when all you do is giving the IC it's own refill point ok so when bleeding after split do it into the new tank not over in the old.
I always just jump the pump at fuse easy in the trunk fuse in the side it is the relay that sits at the bottom there is nothing after the pump relay easy to find. Works every time and no key in ignition but be careful not to damage use both hands

let pump run 20min before I was fully happy and with a new super highflow pump damn that is good stuff

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