SL55/63/65/R230 AMG: Intercooler upgrade
MBWorld Fanatic!
Joined: May 2007
Posts: 1,200
Likes: 0
From: Irvine, CA
Car Whore
Its to to start introducing complete replacements for the stock intercooler instead of addons. Many peoples warranties are now running out so I think it might be a more viable product
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Super Member
Joined: Oct 2006
Posts: 579
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From: Toronto, ON
Bentley Flying Spur, CL550
It'll definitely make a noticable difference. After changing mine out, I haven't experienced the 'supercharger shut-off' yet. Just last night I took it to 160 on the freeway and could've kept going(limiter removed). Before the pump swap my car would 'die' anywhere between 120 and 140 due to heat soak.
Change the pump out. You won't be disappointed.
Change the pump out. You won't be disappointed.
Thread Starter
Senior Member
Joined: Jun 2007
Posts: 325
Likes: 4
2016 s65 Coupe, 2024 GLE53C, 2020 S560
I ordered the pump and had it overnighted so I can this all fixed before track days this week. I will let you know how it works. I want to do the 160 thermostat but PTE has not responded yet.
Junior Member
Joined: Aug 2008
Posts: 22
Likes: 0
From: Sylvania, OH
SL55 AMG (03); SL500 (98); BMW535 (08); Landrover LR2 (07)
Intercooler Pump
I have just replaced the IC Pump with the much recommended Johnson CM030 unit and it hasn't fixed my problem. I was therefore wondering if anyone could suggest any new ideas.
My problem is that if I do a fast run from stand still and then come to a stop, when I try to pull away agin, there's a drastic reduction in power.
Is it possible that the IC pump isn't getting electrical power? Does the IC Pump only run after the Supercharger gets hot or does it run all the time.
My problem is that if I do a fast run from stand still and then come to a stop, when I try to pull away agin, there's a drastic reduction in power.
Is it possible that the IC pump isn't getting electrical power? Does the IC Pump only run after the Supercharger gets hot or does it run all the time.
MBWorld Fanatic!
Joined: Dec 2005
Posts: 1,653
Likes: 5
From: Ann Arbor
'03 SL55
I have just replaced the IC Pump with the much recommended Johnson CM030 unit and it hasn't fixed my problem. I was therefore wondering if anyone could suggest any new ideas.
My problem is that if I do a fast run from stand still and then come to a stop, when I try to pull away agin, there's a drastic reduction in power.
Is it possible that the IC pump isn't getting electrical power? Does the IC Pump only run after the Supercharger gets hot or does it run all the time.
My problem is that if I do a fast run from stand still and then come to a stop, when I try to pull away agin, there's a drastic reduction in power.
Is it possible that the IC pump isn't getting electrical power? Does the IC Pump only run after the Supercharger gets hot or does it run all the time.
As far as your bigger question goes, its hard to say. When my pump failed I couldn't even complete a single 1/4 mile run on the dragstrip without the supercharger shutting off. Based on that experienced I'd guess that your getting some cooling but it's hard to say whether there's a defect (e.g. faulty thermostat, obstruction in the cooling line, etc.) as opposed to simply overwhelming the system.
Have you tried running your car with a datalogger attached to the OBDII port? That will give you some hard data on how quickly your IATs rise when you accelerate.
Junior Member
Joined: Aug 2008
Posts: 22
Likes: 0
From: Sylvania, OH
SL55 AMG (03); SL500 (98); BMW535 (08); Landrover LR2 (07)
Thanks for the feedback.
When I installed the Johnson Pump, I had to cut the OEM plug off the end of the wire and make up a junction to the simple tails that came on the new pump.
What I'm thinking of doing is hooking up a 12V lamp to the same pair of wires and running it into the car so that I can see if the pump is getting power when I accelerate hard once or twice. At least this will confirm that the thermostat is telling the pump to run. Assuming this works OK, then I guess the next thing to look for is an air blockage of some sort.
Another blog told me to 'bleed' the pump after installation. Once I filled the expansion tank up, I simply eased one of the hoses to the pump off the nipple and when I saw water coming out I put it back on.
Any ideas of where the thermostat is located if this proves to be the culprit?
When I installed the Johnson Pump, I had to cut the OEM plug off the end of the wire and make up a junction to the simple tails that came on the new pump.
What I'm thinking of doing is hooking up a 12V lamp to the same pair of wires and running it into the car so that I can see if the pump is getting power when I accelerate hard once or twice. At least this will confirm that the thermostat is telling the pump to run. Assuming this works OK, then I guess the next thing to look for is an air blockage of some sort.
Another blog told me to 'bleed' the pump after installation. Once I filled the expansion tank up, I simply eased one of the hoses to the pump off the nipple and when I saw water coming out I put it back on.
Any ideas of where the thermostat is located if this proves to be the culprit?
Last edited by phackett; Nov 30, 2008 at 12:12 PM.
