jpohl402

Code 3 unit....
Could someone please tell me how to bleed air out of the lines/system ?
Thanks in advance.....

izzyz28

There is a rubber cap over a nipple on one of the intercooler lines. Remove the front engine cover and you'll see it. Connect a piece of hose(clear works best) to the nipple and start the car/connect the pump to 12 volts, whatever you need to do to get the pump to run. When there are no more bubbles coming out it's bled. When I installed my CM30 I bled it twice a couple days apart, just to make sure.

shardul

iTrader: (1)

well said, it will only take a minute or 2 to bleed the whole system

Blacksport350

I actually let mine run for 10 minutes or so the last time a bleed it and also tapped the lines with a plastic screwdriver handle. It kept purging small air bubbles for quite a while as opposed to belching out a couple of large ones.

This is a major disadvantage of the closed circuit IC cooling system in the E55. All other blown AMG cars self bleed the IC system by actively circulating the IC and engine cooling circuits to the coolant reservoir. The downside with that is raised temps in the IC cooling circuit. You can't win.

alltrac

i never did this when i installed mine....whats the best way to turn on the pump manually...besides climbing underneath the car?

izzyz28

You'll have to climb under the car if you want to turn it on manually. As far as I know the IC pump is on all the time except for cold starts, so I drove around for a while, turned the car off, installed the hose, and started the car. If you want to make sure it's running, slowly slip the hose off while the engine is running and you'll see a decent amount of coolant coming out. Remember, it's a closed system(non-pressurized), so you will NOT see coolant shooting out the end of the hose. It simply flows through the circuit and the hose is simply used to raise the level of the bleeder slightly.

alltrac

ok...i see...but then when the coolant flows out, how do you refill? I didnt do the install myself...i just watched, but i know the air bleeding wasnt done.

alltrac

anyone?

prodigymb

to refill you just add some to the reservoir. take that cap off and run a clear hose to the reservoir, poer up the pump and watch it flow. you shouldnt lose much coolant in this process, just a bit that will come out when you take the cap off. you can also put a vice grip right below that bleed nipple to circulate all of the coolant in the system out into the reservoir......that is what mercedes dealer system advises.

alltrac

u are talking about the regular coolant reservoir....correct? Where is this bleed valve u talk about?

prodigymb

if you are looking under your hood...
passenger side, in front of the supercharger. there are two hard metal lines right next to each other, one has a rubber cap on it with a clamp. that is the bleed nipple, uncap it and put a clear hose on it, route the hose to the expansion tank. use a vice grip to block off the rubber hose right after the bleed nipple, power up the pump and you will see coolant flowing to the expansion tank.

TopGun32

you r right..

i have switched my HE twice and tested IAT's for 2 summer now. The best way I found to bleed the system was to turn on the heater A/C and let it run while driving on the freeway for a few minutes.... this way the coolant and IC system and A/C HE all get to mix and end up at the reservoir.

I have not separated my IC system from my coolant lines.

prodigymb

A/C ?

You run the heater or the air conditioner?