05 s55 IC pump upgrade to 010
I pulled the old pump out and yellow coolant came out which is what was in the car when I bought it. However, I did a complete or so I thought coolant system flush. I used the new blue coolant from Mercedes.
My questions are:
Why was the coolant still yellow in my IC system but blue in my main cooling system? And Why can I not hear the pump running as im under the car? I let the car get to operating temp and all, pump got warm but hoses were not. If the pump was running then its the most smooth and quiet pump I have ever had.
I appreciate any feedback.
Chris
Can you still get at the new pump’s connector? Maybe you can verify the new pump is working too. Then at least you know those work and “should have been recirculating” coolant.
I think you are inferring that the pump is not getting turned on for some reason, which would leave stale coolant. So probe the pump connector from the ECU to measure for 12V power to the pump.
I don’t know the IC coolant flow well enough to advise on that. Is it possible it does not share its coolant with the engine’s coolant and has its own separate loop through the radiator?
I will have to check to see if the pump is getting power. I don't know if the old pump worked or not so ill have to check that too. I have never had the supercharger shut down due to temperatures, but then again I don't drive the car hard or often.
I'm not even at 57k miles yet so its hard to believe the old pump stopped working, but then again it is original. Do you happen to know where the fuse/relay may be hiding?
I thought this system was tied into the main cooling system, but I too am not very familiar with this system. I can't find a video or much information on it either. If I can't figure it out then I may take it to a shop as diagnosing possible electrical issues are beyond my scope of knowledge.
Chris




maw
Last edited by maw1124; May 22, 2021 at 11:03 AM.
With the cooling system not being split to my knowledge and driving the car, it makes me wonder why the coolant didn't mix in. I will check it out when I get home from work as long as the wife doesn't yell at me for spending to much time with my new mistress in the garage.
I cannot even find a diagram for the fuse and relay layout and location. If I cannot figure it out ill take it to my local shop who specializes in German cars.
Chris




maw
The new pump must be working as I checked yesterday after running the car and pulling the IC pump hose the coolant was blue. The pump must not run all the time. My guess is when air intake temperature is higher.
Either way I 'm on to my next project, accumulators, pulsation damper, leaky fuel pressure regulator and fuel filter.
Chris
Last edited by CaptainR; May 23, 2021 at 12:40 PM.
Trending Topics




The new pump must be working as I checked yesterday after running the car and pulling the IC pump hose the coolant was blue. The pump must not run all the time. My guess is when air intake temperature is higher.
Either way I 'm on to my next project, accumulators, pulsation damper, leaky fuel pressure regulator and fuel filter.
Chris
Cheers,
maw
The Best of Mercedes & AMG




maw
Last edited by maw1124; May 23, 2021 at 09:06 PM.
You are very proficient with these cars... placing the transmission in comfort mode, does that soften the suspension or just adjust shifting and 2nd gear start?
I read through my owners manual and couldn't find any info.
Chris




You are very proficient with these cars... placing the transmission in comfort mode, does that soften the suspension or just adjust shifting and 2nd gear start?
I read through my owners manual and couldn't find any info.
Chris
Enjoy,
maw
Chris
Enjoy,
maw
Any thoughts or input on W220 S65 IC pump, preventative or upgrade consideration? Just did ABC pump, pulsation damper, accumulators, seat pump, trunk pump and struts, combar and some sundries. Also wondering about a frayed coax cable. Noticed it when messing with the combar issues. It runs from the radio to the back but I don’t want to mess with the whole harness. Is there somewhere I would find a cable for that?
Frank




Your car should be running well right now, based upon the above. As for the radio harness, I've stayed away from disassembling my interior as well, e.g., to run a microphone for the Mobridge BT system. I use it for music only. So I have no idea where any radio wires run. Re-wiring this car is not something I'm into. If anything I'll put in better speakers with the correct impedance, but that's using the same wiring infrastructure.
Sorry I couldn't be more helpful.
Cheers,
maw
Last edited by maw1124; Jun 10, 2021 at 10:20 AM.
Your car should be running well right now, based upon the above. As for the radio harness, I've stayed away from disassembling my interior as well, e.g., to run a microphone for the Mobridge BT system. I use it for music only. So I have no idea where any radio wires run. Re-wiring this car is not something I'm into. If anything I'll put in better speakers with the correct impedance, but that's using the same wiring infrastructure.
Sorry I couldn't be more helpful.
Cheers,
maw
Cheers.




How does the car feel after those services @Krazyleg?
maw
How does the car feel after those services @Krazyleg?
maw
That issue creates something of a hum or a drone under hard braking where the front end dips and the suspension is put under load. That extra “push” on the suspension generates that sound. It is present at around 2000-2500 rpm both on the deceleration and return acceleration then it subsides. My sense is it is related to the nitrogen filled bladder, no more bladder talk. Ultimately not a big deal but I feel better about correct. Putting that aside, what an amazing experience driving a vehicle of this magnitude. There’s just nothing like it on the road other than my CL which might have been slightly superior. Do you know of any source for rebuilt valve blocks?
My last issue is a frayed coax cable at the rear roof line by the center rear window. Benz wants you to replace the whole wiring harness. I’m not going that route. I have to find someone that can address that issue. Any thoughts?
cheer
Frank
I was lucky that mine were not fused together. Have you tried soaking the area with pb blaster, liquid wrench? Worth a shot.
I was lucky that mine were not fused together. Have you tried soaking the area with pb blaster, liquid wrench? Worth a shot.
Thank you
Grateful Frank




Cheers,
maw



