Billy - Typically you won't get any warning that your IC Cooling Pump is on the fritz with the exception of an unexplainable (but extremely noticeable) loss of horsepower from the SRT's supercharged engine. Then, when you least expect it, the power has returned, but only for a minute or so. When the clutch of the S/C keeps engaging/disengaging, the most common culprit is the overheating of the S/C which is normally caused by no coolant flowing through the inter-cooler because the pump has failed. Since this cooling system is basically separated from the engine coolant system (joined only at the overflow tank), you can continue to drive the car with no harm to the engine nor to the S/C, but you will have dramatically decreased HP. Those of us that have the supercharged Xfires really enjoy the ~330HP that a fully functioning SRT engine (or the SLK32 ) can deliver and we can pick up on the loss of H/P rather quickly

RL

 

It's really hard to miss the supercharger not kicking in, you'd know if you were afflicted by it. For me, sometimes it'd get up and go when I put my foot in it and other times it'd sit back (the RPM would shoot up, it'd feel like it was going to go) but it just didn't. I believe that when I started noticing this it hadn't gone out completely, as it seemed extremely sporadic even in a short period of time that I don't believe it could have cooled down in. I noticed it most on the interstate and tested it there, got up to about 70 mph and planted my foot... it'd go from 70-100 really quickly then I'd do it a few more times and eventually the supercharger would fail to kick in... it did get progressively worse. If you're having these issues be sure to check the fuse, #13 on the SRT-6 but I'm not sure what it is on the SLK32. If you really want to find out if it's working, feel to see if it's running. Take the car out and get it up to 2500 RPM, the intercooler pump stays on after this point until the car is turned to the ON/OFF position. I'm not sure where the pump is on the SLK32, I believe it's behind the front passenger tire well but it looked harder to reach than the SRT6's.

Edit: RL67037 beat me to it by a long shot! The pump seems to be the most common issue, sometimes the fuses blow and this should always be the first assumption as it's the cheapest, and every now and again it'll be the thermostat. There are NO WARNING LIGHTS OR CODES.

 

Hey guys. I'm looking to replace my pump, read this thread, but I am still confused as to what the nomenclature is on the stock/original pump... Could somebody steer me straight?

Best regards -- Bob

 

Ok, I am also trying to sort all of this information out. I am leaning towards the purchase of the Bosch pump as it will be the most direct fit/replacement. After seeing RL67037's post on the Bosch 010 pump I am gearing towards that one on Amazon. However, on Amazon (part# Bosch 0 392 022 010) is referenced as an auxiliary water pump. These are two different pumps (intercooler vs auxiliary water pump)??? The (part# Bosch 0 392 022 002) is listed as an intercooler pump. Just looking for some clarification.

 

El Jefe - that is the exact pump I bought


You'll be good as long as no one has already changed the pump and modified the bracket/connector before you got there. Even though they call it an "Aux Water Pump", it's for the inter-cooler on our cars.

RL

EDIT: Also if you decide to go with the 002 pump - the inlet and outlet ports are different lengths (longer) than what is on the OEM pump, so you will have to modify the hoses if you go with that one. Additionally, the Mercedes guys are saying this pump (the 002) is also crap and I think it was the original pump for the 02/03 SLK 32s.

 

Bosch 0 392 022 003 is the stock pump. I would go with the Bosch 0 392 022 010.

 

Archaic - I am going to have to respectfully disagree on this. I just did this change out about a month ago and used the pump from Amazon and it was a identical match to the 003 that I removed, including the wiring. I tried to order from NeedsWings but he was only carrying the 003 at the time and hadn't started stocking the 010 yet. When I asked Rob at NeedsWings about the 010, he hadn't heard about them yet - we actually exchanged several emails about the pros and cons of the Bosch 003, the 010 and the Johnson. Since I don't have the tools to do modifications, I went with the 010 since it required no mods to the bracket or the connector.

RL

 

Haha, I'd already edited that post because I realized that I was wrong after I went back and re-read your first post. I've also corrected this information on my original post. Hopefully this makes things a little more clear for people who are having the same issues.

 

Bob - from what I have found on my searching on this is that by the time our cars were coming out in 2005, Bosch was selling the 003 pump which I found installed (and failing) on my car. That being said, Rob at NeedsWings told me he has been selling the 003 pumps for several years and has had no complaints from the buyers. I have no idea what is different about the 003 pumps that came originally on our cars (that fail) and the 003 pumps that he sold that were rock solid. Anyway, he is now carrying the 010 pumps, which is the latest revision of these pumps from Bosch and is an identical replacement to what is installed. NeedsWings has them as well as Amazon - they are the same pump if they end with 010. Your choice on who you purchase from if you need one. I installed a 010 about a month ago and I have no idea how long it will last, but the guys on the Mercedes Benz forums say this 010 pump is supposed to be more robust than the previous iterations. Only time will tell.

Thanks

RL

 

Roger that!

 

Thanks for the timely response!! New pump ordered from amazon...... Bosch 0392022010

 

I was at my local shop this week dealing with another srt6 issue (second fuel pump and filter in the last 30 days) and looked into the IC pump (already had the original changed out at 30k by dealer) and we were digging into the MB history on the slk32 and MB did no less than four updates to the pump part number during the production run + after production stopped. His contact at MB indicated it was a large issue and it got to the point that they were nearing recall levels at one time (although no recall was ever launched).

Bosch does not list the 003 on their site, just an 002 and 010 with the 010 having a slightly higher flow rate at the same pressure values. So it may be possible that the 003 was pulled in favor of the 010.

 

Well just got the Benz part at the shop and can confirm the 010 is indeed the specd replacement part

 

yes sir, that is the sign......it's not pumping... LOL...
Here goes...there is a sensor that measures temp. If the pump fails the sensor will not let the s/c kick on due to heat build up from the pump not pumping enough coolant So, when you first start out, the car is cool, everything is perfoming just fine. Once the temps come up, and the pump isn't pumping enough, the sensor will shut down the s/c. If you are on it, it will nose dive because the boost is lost. Temps come down, s/c kicks back on, and away you go. Now imagine this happening every 10 seconds or so, while you are WOT... She is a bucking a horse. First on, then off...until you quit and let it cool down...It will run, but not have the power....

There will be no codes thrown, or any real warning...just these symptoms..

 

Can someone help me locate a CONNECTOR for the Bosch 0 392 022 003 or the Bosch 0 392 022 010 pump (which uses the same connector). I contacted Rob at needswings and talked to him over the phone and he does NOT have the connector. Not sure how Archaic was able to obtain one as he stated above.

thanks.

 

Random

Not really sure what your set-up currently is. Has your I/C pump ever been replaced, and if it has, did it get replaced with a Bosch pump or a Johnson pump?

If, in fact, you still have the original pump in your car, and you order a Bosch 010 pump, you will not need a new connector. If you order a Johnson CM30 to replace your OEM pump, you will need a connector for the Johnson pump, which Needswings normally provides with the Johnson pump.

If, on the other hand, the pump that is currently installed on your car is a (replacement) Johnson pump and you are replacing it with a Bosch 010, then you will need a connector for the Bosch. I have heard (but not proven) that these connectors can be found at Radio Shack. Might be best to take the pump into RS and see if they can match it up.

Give us a bit more information on your current set up and I'm sure someone will chime in to help you out.

RL

 

Yeah I don't have stock connect which fits the 010 pump that's why I'm looking. Right now I'm using the 002 which I'd like to replace with the 010.

 

Hmmm...a 002 Bosch pump? Not really the norm on the Crossfire - sounds like someone has been in there before you. If you have a 002, then your hose sizes and lengths may not fit the 010. From my research, the SRTs normally came out with a 003. These pumps are used on the Mercedes SLK32 and maybe some Fords (Mustangs, Lighting...) as well as other brands, so a search on some other forums might be helpful, or even contacting a dealership. As you might have noticed, the Chrysler dealerships are not very helpful when it comes to Crossfires since they haven't been made in almost 5 years - the service departments don't know much about them. In a case like this, it's best to find a product that still uses what you need and try to buy the part for that car/truck.

Another thing you might try is this site

www.TheCrossfireShop.com

I think he parts out wrecked Crossfires, so if he has access to a wrecked SRT, he might be able to cut off the OEM connector and send it to you. Just a thought.

Sorry couldn't be of more help - good luck on your search!

RL

 

Just finished my 2nd pump replacement. The 010 was used by the Chrysler dealer back in 2006 so it looks as if that pump is indeed the most current. I got 100,000 miles on the first 010 before I started to experience some loss in performance and cooling ability.

 

I have four SRT6 right now. I am very reluctant to cut off a plug and damage a perfectly good SRT6 harness.