How do I bleed both coolant systems once split?
Thread Starter
Junior Member
Joined: Jun 2015
Posts: 62
Likes: 0
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?
Senior Member
Joined: Aug 2014
Posts: 380
Likes: 1
2006 E55 AMG
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)
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)
Thread Starter
Junior Member
Joined: Jun 2015
Posts: 62
Likes: 0
2015 Jeep Grand Cherokee, 2005 E55
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.
Senior Member
Joined: Aug 2014
Posts: 380
Likes: 1
2006 E55 AMG
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.
MBWorld Fanatic!
Joined: Dec 2011
Posts: 1,226
Likes: 24
Mercedes
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.
MBWorld Fanatic!
Joined: Nov 2007
Posts: 3,681
Likes: 39
From: San Diego
E55
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?
Thread Starter
Junior Member
Joined: Jun 2015
Posts: 62
Likes: 0
2015 Jeep Grand Cherokee, 2005 E55
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?
Trending Topics
MBWorld Fanatic!
Joined: Jul 2014
Posts: 3,331
Likes: 586
2005 e55 AMG
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.
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.
MB World Stories
The Best of Mercedes & AMG
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
Junior Member
Joined: Aug 2012
Posts: 46
Likes: 2
CLS55
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; Jul 26, 2015 at 07:43 PM.
Senior Member
Joined: Sep 2011
Posts: 384
Likes: 13
From: Sweden
E55 AMG V8 Kompressor 2004 E 55 AMG Type: 5,439 cc (5.439 L; 331.9 cu in) Supercharged V8 Powe
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.
Bleeding by jumping ic pimp fuse
Senior Member
Joined: Sep 2011
Posts: 384
Likes: 13
From: Sweden
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
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
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
