bad intercooler pump symptoms?
Thread Starter
MBWorld Fanatic!
Joined: Mar 2002
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From: South Florida
STS,FGT,12C,P85D,M4
bad intercooler pump symptoms?
do the intercooler pumps go bad altogether? or can they go slowly or have decreased abilities?
about two weeks ago in 96 degree weather I ran the car from 40-120mph and the supercharger shutdown, car had no power for about 5 minutes, then everything was fine....
the other day, in cooler weather, 85 degrees, I ran it from 40-120mph and it shut down again...
does this point to the IAT's and bad cooling? the car is fine with shorter sprints, 0-80mph, etc.... but longer sprints with more load and the car dies powerwise...
thanks!
about two weeks ago in 96 degree weather I ran the car from 40-120mph and the supercharger shutdown, car had no power for about 5 minutes, then everything was fine....
the other day, in cooler weather, 85 degrees, I ran it from 40-120mph and it shut down again...
does this point to the IAT's and bad cooling? the car is fine with shorter sprints, 0-80mph, etc.... but longer sprints with more load and the car dies powerwise...
thanks!
MBWorld Fanatic!
Joined: Jun 2005
Posts: 1,406
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From: Mia
2005 E 55
do the intercooler pumps go bad altogether? or can they go slowly or have decreased abilities?
about two weeks ago in 96 degree weather I ran the car from 40-120mph and the supercharger shutdown, car had no power for about 5 minutes, then everything was fine....
the other day, in cooler weather, 85 degrees, I ran it from 40-120mph and it shut down again...
does this point to the IAT's and bad cooling? the car is fine with shorter sprints, 0-80mph, etc.... but longer sprints with more load and the car dies powerwise...
thanks!
about two weeks ago in 96 degree weather I ran the car from 40-120mph and the supercharger shutdown, car had no power for about 5 minutes, then everything was fine....
the other day, in cooler weather, 85 degrees, I ran it from 40-120mph and it shut down again...
does this point to the IAT's and bad cooling? the car is fine with shorter sprints, 0-80mph, etc.... but longer sprints with more load and the car dies powerwise...
thanks!
Senior Member
Joined: Jul 2006
Posts: 259
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From: SF Bay Area
06 E55 SOLD, 89 300 SE 375,000 miles
Yeah they can either simply fail all together or over time. I just had mine replaced, and I could slowing over time feel the power going away, until final failure.
Get the thing in and have it replaced if under warranty with the new upgraded bosch unit.
Get the thing in and have it replaced if under warranty with the new upgraded bosch unit.
Member
Joined: Jun 2006
Posts: 233
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From: Bay Area, CA
E55
The symptom is high IAT prompting the ECU to shut down the supercharger. I had the same symptom and for a while. I was consistantly testing the power and doing WOT at different time with different settings (traction control on or off, manual, S, C, on the roll, off the line, etc) to see if there is power or not. LOL Sometimes it's fast sometimes it's a dog and usually right after one WOT it's down. When the dealer replaced my IC pump with the new version all is good. I think I am going to throw in my Johnson pump that has been sitting in the closet for almost a year now.
The root cause is usually a bad IC pump but not always the case. Another root cause may be that the standard intercooler setup is not sufficient and the IC pump is functioning as it was design and functioning properly. If it is the second case because there is substantial mods done, then improving the intercooling system is the solution not throwing in another stock IC pump into the stock insufficient intercooling system.
The root cause is usually a bad IC pump but not always the case. Another root cause may be that the standard intercooler setup is not sufficient and the IC pump is functioning as it was design and functioning properly. If it is the second case because there is substantial mods done, then improving the intercooling system is the solution not throwing in another stock IC pump into the stock insufficient intercooling system.
Thread Starter
MBWorld Fanatic!
Joined: Mar 2002
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From: South Florida
STS,FGT,12C,P85D,M4
I've been at the same mod level for over a year with no issues until now. I'll take it to RENNtech for their intercooler upgrade kit and report back. I wasn't sure if the pump issues was a yes/no it's working or not deal....
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From: Portland, Oregon
2019 Jeep Trackhawk, 2002 CLK55, 2014 911 Carrera
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Junior Member
Joined: Aug 2019
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2006 S55 AMG
I took my S55 out to check IAT's last week because it seemed like it was down on power at the top end. Here's my IAT's were getting over 200F! But manifold pressure still stayed positive, so the supercharger wasn't disengaged even above 200F. That's downright scary that they let it get that high from factory. So I ordered the upgraded Bosch 010 pump and installed it yesterday and also split the system while I was at it. Power is all back and then some! IAT's never rose above 125F, even with back to back pulls. Much better.
Junior Member
Joined: Nov 2001
Posts: 70
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From: Porter Ranch, Ca.
W210, W164, W220, W222
I took my S55 out to check IAT's last week because it seemed like it was down on power at the top end. Here's my IAT's were getting over 200F! But manifold pressure still stayed positive, so the supercharger wasn't disengaged even above 200F. That's downright scary that they let it get that high from factory. So I ordered the upgraded Bosch 010 pump and installed it yesterday and also split the system while I was at it. Power is all back and then some! IAT's never rose above 125F, even with back to back pulls. Much better.
Junior Member
Joined: Aug 2019
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2006 S55 AMG
No, I did not. I also don't plan on doing any racing with it other than the occasional drag race, so the way it's wired up works fine for me as is so far. We'll see after I take it to the track if I change my mind or not.
Senior Member
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From: East Coast, USA
Mercedes CLS 55 AMG
The pumps run non-stop as soon as the supercharger engages the first time. The supercharger goes on clutch at 1-3 MPH and reengages accordingly, but the pump runs continuously until the engine is turned off. Lot of work for not much benefit.
Junior Member
Joined: Nov 2001
Posts: 70
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From: Porter Ranch, Ca.
W210, W164, W220, W222
And since I have a fixed pulley, theoretically speaking my ic pump engages upon startup perhaps? Maybe not worth the time and effort to hardwire my pump.
Senior Member
Joined: Aug 2015
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From: East Coast, USA
Mercedes CLS 55 AMG
It's been a while. I know there's a magnetic clutch engagement signal. If you've done away with the magnetic clutch, and it engages at all, it should conform to the same rules. There's a separate signal in the ME to engage at 40% engine load as well. If you're interested I can pull up the actual function from the ME for you.
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This is 100% correct. (and verified)
Junior Member
Joined: Nov 2001
Posts: 70
Likes: 10
From: Porter Ranch, Ca.
W210, W164, W220, W222
It's been a while. I know there's a magnetic clutch engagement signal. If you've done away with the magnetic clutch, and it engages at all, it should conform to the same rules. There's a separate signal in the ME to engage at 40% engine load as well. If you're interested I can pull up the actual function from the ME for you.
Senior Member
Joined: Aug 2015
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From: East Coast, USA
Mercedes CLS 55 AMG
Dme
Sorry. BMW forum refer to it as DME (digital motor electronics), and I’ve stuck with that. Mercedes folks usually question DME so I’ve dropped the acronym to ME (motor electronics). Motor electronic control unit is probably the most appropriate term which would be MECU?
all referring to the computer for the engine.
all referring to the computer for the engine.
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From: Portland, Oregon
2019 Jeep Trackhawk, 2002 CLK55, 2014 911 Carrera
FYI, you can also get the pump to turn on by quickly stabbing the throttle to WOT while in park. When the pedal hits the WOT button on the floor it turns the pump on, and it will stay on. I used to do this while sitting in the staging lanes at the dragstrip.
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2005 E55 AMG
ATI Super Damper. Check out his info on the link below.
https://stumptownbenz.com/custom-ati...-for-the-m113/
https://stumptownbenz.com/custom-ati...-for-the-m113/
MBWorld Fanatic!
Joined: Jun 2014
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From: Portland, Oregon
2019 Jeep Trackhawk, 2002 CLK55, 2014 911 Carrera
ATI Super Damper. Check out his info on the link below.
https://stumptownbenz.com/custom-ati...-for-the-m113/
https://stumptownbenz.com/custom-ati...-for-the-m113/
