What a difference a pump makes. IAT pics....
Senior Member
Joined: Apr 2006
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From: Henderson, NV
2006 E55 AMG
MBWorld Fanatic!
Joined: Jun 2004
Posts: 2,596
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From: Moscow, Russia
E55K
jakpro already has the evo cooling kit, it just happened to be wired wrong. wiring the pump on continuously for him has DEFINITELY improved his iat's. if you can wait a week, i'll do some data logging with the oem pump wired similar to jakpro's and let you know if there's any difference.
OK...I will wait...thanks but dont forget to do it
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Joined: Sep 2002
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From: West
2005 E55 Wagon
jakpro already has the evo cooling kit, it just happened to be wired wrong. wiring the pump on continuously for him has DEFINITELY improved his iat's. if you can wait a week, i'll do some data logging with the oem pump wired similar to jakpro's and let you know if there's any difference.
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Joined: Jun 2006
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'03 E55, Range Rover Sport Supercharged, Ducati 748R
here's a quick update.
i wired a manual override switch to turn on the rad fan and the i/c pump. ambient temps were 85*f.
this is only with a few minutes of test time so there really isn't enough info acquired to offer any real conclusions yet...well except one, an aftermarket cooling kit is a necessity (at least in desert climates like az). HURRY UP VRUS!
it appears that manually running the fan and oem i/c pump do offer a slight reduction in iat's. with measurements taken at near identical engine loads, throttle positions, and mph, i'm seeing average reduction in iat's of 7-10*f with one run 22* lower!?!? however, i can still reach high peak iat's in the 160's range if i stay in the throttle so it's still no where near as effective without an aftermarket heat exchanger.
so my preliminary conclusions are not to go out and wire your oem pump to run continuously just yet. i'll get some more data and post my interpretations as time permits.
i wired a manual override switch to turn on the rad fan and the i/c pump. ambient temps were 85*f.
this is only with a few minutes of test time so there really isn't enough info acquired to offer any real conclusions yet...well except one, an aftermarket cooling kit is a necessity (at least in desert climates like az). HURRY UP VRUS!
it appears that manually running the fan and oem i/c pump do offer a slight reduction in iat's. with measurements taken at near identical engine loads, throttle positions, and mph, i'm seeing average reduction in iat's of 7-10*f with one run 22* lower!?!? however, i can still reach high peak iat's in the 160's range if i stay in the throttle so it's still no where near as effective without an aftermarket heat exchanger.
so my preliminary conclusions are not to go out and wire your oem pump to run continuously just yet. i'll get some more data and post my interpretations as time permits.
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Joined: Aug 2005
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CLS55 06 (K4, LSD), Range Rover Sport 06, Bentley Flying Spur 07
The shop which installed my kleemann mods had changed the settings in the ECU to make the pump start running at 20C. They said this would help during the takeoff. Also they have told me that the i/c pump has been upgraded by mercedes 3 times since the cls came out and that I need to get the latest one, which came out in Jan, this year. So I guess that's what everyone should do.
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Joined: Jan 2007
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From: Kuwait
CLS55 2006, CLS 63S 2015
The shop which installed my kleemann mods had changed the settings in the ECU to make the pump start running at 20C. They said this would help during the takeoff. Also they have told me that the i/c pump has been upgraded by mercedes 3 times since the cls came out and that I need to get the latest one, which came out in Jan, this year. So I guess that's what everyone should do.
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Joined: Oct 2006
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From: Caribbean/Florida/Colorado
E-ZGO 53hp., 1999 E 430 sport, 2004 E 55, 2008 Tahoe LTZ on 24"s
The shop which installed my kleemann mods had changed the settings in the ECU to make the pump start running at 20C. They said this would help during the takeoff. Also they have told me that the i/c pump has been upgraded by mercedes 3 times since the cls came out and that I need to get the latest one, which came out in Jan, this year. So I guess that's what everyone should do.
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Joined: Aug 2005
Posts: 264
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CLS55 06 (K4, LSD), Range Rover Sport 06, Bentley Flying Spur 07
Just go to the dealer and say that your s/c turns off, and you've been told its due to a bad i/c pump. They should replace it without a problem.
Thread Starter
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Joined: Jan 2004
Posts: 7,092
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From: Salt Lake City (but not Morm)
2003 E55 & 2014 GL550
Just go to the dealer and say that your s/c turns off, and you've been told its due to a bad i/c pump.
Just stay on um. They'll swap it out.
MBWorld Fanatic!
Joined: Jun 2004
Posts: 2,596
Likes: 1
From: Moscow, Russia
E55K
here's a quick update.
i wired a manual override switch to turn on the rad fan and the i/c pump. ambient temps were 85*f.
this is only with a few minutes of test time so there really isn't enough info acquired to offer any real conclusions yet...well except one, an aftermarket cooling kit is a necessity (at least in desert climates like az). HURRY UP VRUS!
it appears that manually running the fan and oem i/c pump do offer a slight reduction in iat's. with measurements taken at near identical engine loads, throttle positions, and mph, i'm seeing average reduction in iat's of 7-10*f with one run 22* lower!?!? however, i can still reach high peak iat's in the 160's range if i stay in the throttle so it's still no where near as effective without an aftermarket heat exchanger.
so my preliminary conclusions are not to go out and wire your oem pump to run continuously just yet. i'll get some more data and post my interpretations as time permits.
i wired a manual override switch to turn on the rad fan and the i/c pump. ambient temps were 85*f.
this is only with a few minutes of test time so there really isn't enough info acquired to offer any real conclusions yet...well except one, an aftermarket cooling kit is a necessity (at least in desert climates like az). HURRY UP VRUS!
it appears that manually running the fan and oem i/c pump do offer a slight reduction in iat's. with measurements taken at near identical engine loads, throttle positions, and mph, i'm seeing average reduction in iat's of 7-10*f with one run 22* lower!?!? however, i can still reach high peak iat's in the 160's range if i stay in the throttle so it's still no where near as effective without an aftermarket heat exchanger.
so my preliminary conclusions are not to go out and wire your oem pump to run continuously just yet. i'll get some more data and post my interpretations as time permits.
