Coolant Loss again - quick poll please!
Thread Starter
Senior Member
Joined: Nov 2006
Posts: 259
Likes: 0
From: Ottawa, Ontario
C32 AMG - in Pewter
Coolant Loss again - quick poll please!
The I/C pump on my C32 was replaced 2 months ago. I noticed a coolant loss at that time which I hoped was addressed with the pump replacement. Unfortunately, I noticed that starting about a week or so ago, I was quickly loosing coolant again - about 1/8 inch level loss per day. Level is now about 1" below where it should be, fault code will come up soon 
. I have read many post but hoped that a quick poll could help me and others.
Coolant Loss:
==========
1. Mileage - 40k
2. Coolant color at that time - yellow-beige or greenish color
3. Reason - specify one of the following: (still unknown in my case)
--a. I/C core leak - coolant goes into air intake path, color traces and clogging
--b. Transmission line leak in Radiator - coolant in transmission, tranny issues
--c. Leaking faulty I/C pump
--d. Other
4. Required Repair - tbd in my case
5. Other symptoms, besides coolant level change - like unusual transmission behavior...
Please post if you had to deal with coolant loss, seems it is not uncommon.
. I have read many post but hoped that a quick poll could help me and others.Coolant Loss:
==========
1. Mileage - 40k
2. Coolant color at that time - yellow-beige or greenish color
3. Reason - specify one of the following: (still unknown in my case)
--a. I/C core leak - coolant goes into air intake path, color traces and clogging
--b. Transmission line leak in Radiator - coolant in transmission, tranny issues
--c. Leaking faulty I/C pump
--d. Other
4. Required Repair - tbd in my case
5. Other symptoms, besides coolant level change - like unusual transmission behavior...
Please post if you had to deal with coolant loss, seems it is not uncommon.
Last edited by gkstar; Jan 20, 2007 at 06:43 PM.
MBWorld Fanatic!
Joined: Dec 2005
Posts: 1,239
Likes: 1
From: San Jose, CA
ML63
The I/C pump on my C32 was replaced 2 months ago. I noticed a coolant loss at that time which I hoped was addressed with the pump replacement. Unfortunately, I noticed that starting about a week or so ago, I was quickly loosing coolant again - about 1/8 inch level loss per day. Level is now about 1" below where it should be, fault code will come up soon . I have read many post but hoped that a quick poll could help me and others.
Coolant Loss:
==========
1. Mileage - 40k
2. Coolant color at that time - yellow-beige or greenish color
3. Reason - specify one of the following: (still unknown in my case)
--a. I/C core leak - coolant goes into air intake path, color traces and clogging
--b. Transmission line leak in Radiator - coolant in transmission, tranny issues
--c. Leaking faulty I/C pump
--d. Other
4. Required Repair - tbd in my case
5. Other symptoms, besides coolant level change - like unusual transmission behavior...
Please post if you had to deal with coolant loss, seems it is not uncommon.
. I have read many post but hoped that a quick poll could help me and others.Coolant Loss:
==========
1. Mileage - 40k
2. Coolant color at that time - yellow-beige or greenish color
3. Reason - specify one of the following: (still unknown in my case)
--a. I/C core leak - coolant goes into air intake path, color traces and clogging
--b. Transmission line leak in Radiator - coolant in transmission, tranny issues
--c. Leaking faulty I/C pump
--d. Other
4. Required Repair - tbd in my case
5. Other symptoms, besides coolant level change - like unusual transmission behavior...
Please post if you had to deal with coolant loss, seems it is not uncommon.
Newbie
Joined: Aug 2006
Posts: 21
Likes: 0
From: Cheshire, UK
2002 C32 AMG Peugeot 205 Rally car. Honda VFR Vtec
It's in at the dealers at the moment for a full investigation into the coolant loss. VERY similar problems. I loose approx 10mm water from the expansion tank per day, and put in approx 1l of coolant per week.
I had the coolant pump replaced in October and a couple of weeks later had the "coolant low" warning. It's been in twice since with coolant loss problems, pressure tested to no avail. No signs of external loss.
Now I've finally got MB to take the car in for investigation at their cost.
Hopefully I should know soon.
Cheers
Mark
Thread Starter
Senior Member
Joined: Nov 2006
Posts: 259
Likes: 0
From: Ottawa, Ontario
C32 AMG - in Pewter
Thanks for sharing!
Do you know what they did to diagnose and narrow it down to this problem? I would suggest it to my dealer.
Will they be replacing the intercooler core with the same type or an improved design that will not corrode in the future? I read rumors that since recently, they use improved replacement I/C cores.
Do you know what they did to diagnose and narrow it down to this problem? I would suggest it to my dealer.
Will they be replacing the intercooler core with the same type or an improved design that will not corrode in the future? I read rumors that since recently, they use improved replacement I/C cores.
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MBWorld Fanatic!
Joined: Sep 2002
Posts: 2,923
Likes: 3
Mercedes Benz
Low coolant: (7 months ago)
- clogged intake runners
- leaking intercooler
- repaired under warranty
You might want to press for new o2 sensors or cats since coolant in the combustion chamber can foul both very quickly. If you have had the issue for quite some time I would for sure ask for that to be done. One forum member here was able to have this done.
- clogged intake runners
- leaking intercooler
- repaired under warranty
You might want to press for new o2 sensors or cats since coolant in the combustion chamber can foul both very quickly. If you have had the issue for quite some time I would for sure ask for that to be done. One forum member here was able to have this done.
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