Bif powell

This was preceded a few days ago by a message on my instrument cluster about "SOS call Shop" something like that. I assumed that this was telling me that my service interval was up, but maybe it's something else?...

As for the pump, it was holding out well for the last 20k miles or so and then yesterday, I went to pass someone, the engine made noise like it wanted to go but...no go Could it be something else and related to the SOS message I got previously?

The sad part is that I would like to replace it with a higher performing part and maybe do a separated reservoir and bigger heat exchanger, but my S4 is completely torn apart taking up my entire garage (pulling the motor and tranny for a stasis rebuild/stage 3+) so I think I'm going to just have to bite the bullet at the stealership

For you guys that have done this, how big a job is it to just replace the pump?...maybe I can do it out on the drive-way? Do I have to take the bumper off?

jacek9478

Bif! It took me aprox 1.5 hrs to do it.
It is very easy swap.
Follow directions from 1Fast write up and You will be fine.
Good Luck.
Jack

loudandheard

Before anyone tells you to do a search, which you should. Check out this thread about a cheap alternative to going to the dealer to get your pump fixed. Seeing how you are mechanically inclined, putting on the replacement should be a piece of cake. Also, I don't believe you have to take off the bumper. They should make that thread a sticky for all the members, apparently the pumps are very limited in their life span.
https://mbworld.org/forums/c32-amg-c55-amg-w203/146457-1fastc32-s-cheep-intercooler-pump-replacement.html

rlee02135

the Johnson CM30 pump should be a easy swap.

m3_eater

Bif, this is an easy repair and you can do it in your driveway. No sweat for someone doing a stage 3 Audi in their garage!

Code3 Performance

Its kinda tight if you just take off the wheel, and do it from the back. After working on the HE project, I realized how easy it is to take the bumper off. With the bumper off, its a 10 minute job. I can get the bumper off in about 10 minutes now. If I do any more pump work, which I will be in the future, I will just take the bumper off instead of busting up my hands.

Eurocharged Rick

i installed my new CM30 pump yesterday without removing the bumper...took an hour with me taking my time, very easy to do...

Bif, if you want my old pump, which is working fine, i just wanted to upgrade, you can have it...just pay for shipping and i will get it shipped out asap...

let me know if you want it...

Fifth Ring

Quick question. When you take off the old pump hoses, what amount of fluid leaks out? Do you just let it run out, or do you plug the hoses? When installing the new pump, do you need to do anything to ensure that the pump does not run dry? Is there a priming process?

I've mentally replaced my pump a few times already, and this is the step that is still mysterious to me.

(Ford Lightning (Bosch) pump is waiting in the wings, prewired and ready to go.)

m3_eater

On mine, I just put a small bucket underneath and let the lines drain into it. It's not that much fluid, perhaps 1/3 to 1/2 gallon. As long as the container is clean and so is the fluid that was drained, you can simply return it to the overflow reservoir when done. The pump does not require priming - it's plug & play.

My favorite piece of advice in the original tutorial thread is to use vice grips to release the hose clamps and leave them in place while you put the new pump in. Makes the whole job faster, because a good deal of your effort is just getting the clamps released in such tight quarters.

Eurocharged Rick

on mine, because i have the seperate reservoir on my car, i lost almost 2 gallons...

one thing to note: on my 2002, i had to rev the car up to like 4,000rpms in order to get the pump to start pumping fluid... i did this to make sure i got all of the air out of the system and that the reservoir was full before the first drive...

Code3 Performance

Definitely purge the system after you get everything back together. Let the car idle until you hear the pump start working, and you will see the fluid start to get low, as well as air bubbles being worked out. Simply keep adding fluid until it stays full. Often times, more air bubbles will work there way out after the first drive. Just make sure to check it again and fill if needed. Its a simple process.

Magician

I have a Ford Lightning one for sale. Brand new in Box. easy to install

Bif powell

1fast, absolutely. I'll PM you!

FrankW

any preferred coolant brand guys?

Eurocharged Rick

water and Redline water wetter...

FrankW

thx

just got my CM30 today. might as well drain and put in new fluids.

360_iti

For those of you who have taken the bumper off, was there any fitment issues when you put it back? I’m just afraid it might loosen a bit after you do it a few times.

Code3 Performance

I have taken the bumper off more times than I care to count. It still fits like a glove

Eurocharged Rick

it will not loosen up, it is just a pain to get it lined up just right by yourself, it is pretty easy to do with someone helping...

Eurocharged Rick

pump shipped out today, enjoy John...i hope it serves you well!

splinter

It’s encouraging how you are so willing to help a fellow enthusiast.

Kudos to 1FASTC32.

Bif powell

No lie there

I think I'm going to have this coincide with my head-light swap and just take the bumper off. Eventually I'll do a bigger HE and it's probably good to have this procedure under my belt anyways

Thanks for the tips - and free inter-cooler pump

Eurocharged Rick

no worries, i am always glad to help someone out if it within my power to do so...

m3_eater

I suggest the OEM coolant (the orange stuff). The other brands (the green stuff) cause seals to go bad and subsequent coolant leakage into your intake. This is no joke - STF to find the threads with pictures!

m444

Mine has OEM Mercedes coolant and it's green. That's what it came with, that's what the Mercedes dealer used.