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I've got a SL55 AMG 2003 model. It recently developed a problem: If I push it a bit too hard, it loses most of its power for like 1-2 mins. I assume it switches off the kompressor for whatever reason. It happens if I push it over 120 mph or do it a few times a row close to 100 mph. It seems to happen more often with hot weather.
I assume that this costs a small fortune and I'd rather figure out how bad the problem is. Anyone has any ideas?
IC pump would be first guess. There is a diy with step by step instructions stickied in the forum. Also a ton of YouTube videos. Just type in m113k IC pump upgrade and you’ll be able to read all about it.
The problem started after I changed the pully on the supercharger from original to 83,5mm. I have not changed/modified the IC pump. Have no idea what is going on. Maybe an idea to start With the IC pump mod then?
Issue 1 - RESOLVED - During the test drive I was sure at one point I put my foot down and there was very little power, I mentioned it to the seller who tried to make me think it was in my head until it happened again. The issue was this, after 2/3 stong pulls I would give it some and the car seemed to perform like a 2.0ltr non-turbo - 90% power loss. After a few mins of normal driving and trying again it would work again. From other online I was pretty certain it was the Intercooler Pump and a build-up of heat causing the ecu to reduce power to preserve the engine. So this was changed for the newer Bosch one. On removal it seems it had never been changed, and after testing was found to be completely dead. New pump in and all the power is back plus some! happy days!
Pretty sure this is your issue, I got the new Bosch pump on amazon at £111 next day.
hi, I have a SL 55AMG 03 I recently replaced the ic pump with the upgraded Jonson CM 30 pump. It has definitely improved the problem of the supercharger cutting out but has not eliminated the problem. It still happens but just not as frequent. Does anybody have any idea on what this could be thank you
sounds like the car going into limp mode due to excessive heat, If you modify the supercharger to make more power without upgrading the colling to the SC you will have this problem repeatedly. My car had a bad supercharger coolant pump, the upgeaded "010" pump is an easy diy, no electrical mods, plug and play. Look to VRP for a selection of cooling mods to upgrade the cooling to the supercharger. There are other companies that also make mods but for the new person to this platform their selection is easy to peruse and straightforward.
sounds like the car going into limp mode due to excessive heat, If you modify the supercharger to make more power without upgrading the colling to the SC you will have this problem repeatedly. My car had a bad supercharger coolant pump, the upgeaded "010" pump is an easy diy, no electrical mods, plug and play. Look to VRP for a selection of cooling mods to upgrade the cooling to the supercharger. There are other companies that also make mods but for the new person to this platform their selection is easy to peruse and straightforward.
thank you for the advice I have not upgraded the supercharger for modified the car anyway other than changing the icPomp to the Jonson one, as I seen online, it was recommended. I also have the Bosch 010 pump as I bought both in case one did not work. I just didn’t know if there was another common problem, a sensor or something like that.
also, I don’t think the vehicle is going into limp mode as there is no engine, warning, lights or anything. If you back off the throttle for a couple of minutes the supercharger kicks back in
Coolant pump failed. Hook the car up to Xentry, go to motor electronics, and try to activate it. Most likely you will feel nothing because the pump is dead. No codes, no check engine light. The joys and mysteries of a Mercedes.
Coolant pump failed. Hook the car up to Xentry, go to motor electronics, and try to activate it. Most likely you will feel nothing because the pump is dead. No codes, no check engine light. The joys and mysteries of a Mercedes.
thank you very much I thought it was a cooling problem. Do you know the part number for the pump? Thanks
hi, I have a SL 55AMG 03 I recently replaced the ic pump with the upgraded Jonson CM 30 pump. It has definitely improved the problem of the supercharger cutting out but has not eliminated the problem. It still happens but just not as frequent. Does anybody have any idea on what this could be thank you
thank you very much for the advice so it’s looking like one of two problems possibly both water pump and heat exchanger. This is the first sl55 have owned and this is all quite new are they?
easy repairs, or is this a major job?
thank you very much for the advice so it’s looking like one of two problems possibly both water pump and heat exchanger. This is the first sl55 have owned and this is all quite new are they?
easy repairs, or is this a major job?
Coolant pump failed. Hook the car up to Xentry, go to motor electronics, and try to activate it. Most likely you will feel nothing because the pump is dead. No codes, no check engine light. The joys and mysteries of a Mercedes.
hi, when you say coolant pump when I type in coolant pump on eBay, there are two types a mechanical pump and an electric pump. I am sure the electric pump is the one I’ve changed the Jonson CM 30. Do you think it is the mechanical pump that has failed on this time?
The CM30 is junk. Don't use it. Bosch 010 is far superior. There's 2 electric pumps, one for the supercharger coolant, and the other handles the HVAC stuff I believe.
You can split the cooling system, and look at replacing the IAT sensor. which may or may not help. If the car is legit heat soaking then the supercharger is disengaging as a safety measure. This isn't implausible if its been exceptionally hot in your area.
[QUOTE=herpderp;8817607]The CM30 is junk. Don't use it. Bosch 010 is far superior. There's 2 electric pumps, one for the supercharger coolant, and the other handles the HVAC stuff I believe.
You can split the cooling system, and look at replacing the IAT sensor. which may or may not help. If the car is legit heat soaking then the supercharger is disengaging as a safety measure. This isn't implausible if its been exceptionally hot in your area.
[/QUOTE
I have the feeling that the Jonson pump is not working correctly, but I have a new Bosch pump 010 I think I’m going to put this on and see how it goes. Hopefully that solves the problem.
I have the feeling that the Jonson pump is not working correctly, but I have a new Bosch pump 010 I think I’m going to put this on and see how it goes. Hopefully that solves the problem.
You are asking the supercharger to do more then stock. This means more heat is added to the intake charge. OEM charge cooling is barely adequate at stock boost.
Charge coolant is best when not mixed with engine coolant as MB did. Do this mod.
It needs more ability to get heat out. Add a heat exchanger in front of the stack. Search... this is has been done many times.
The Bosch charge coolant pump will be enough.
You are asking the supercharger to do more then stock. This means more heat is added to the intake charge. OEM charge cooling is barely adequate at stock boost.
Charge coolant is best when not mixed with engine coolant as MB did. Do this mod.
It needs more ability to get heat out. Add a heat exchanger in front of the stack. Search... this is has been done many times.
The Bosch charge coolant pump will be enough.
thank you very much I will look into having another heat exchanger. In the meantime I’m changing the pump back to the Bosch
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