Check engine light question
Thread Starter
Junior Member
Joined: Apr 2009
Posts: 44
Likes: 0
From: Jupiter
2003 C32 AMG
go to apeusa.com for the cm30 johnson pump. 145$ shipped. when i replaced mine i used siome rubber tubing froma bike tire and wrapped the pump. then i drilled 1 hole and tapped it were the original pump mounts and used the cm30 mount in the same location. i also drilled out the electrical plug from the old unit and soldered and heat shrinked the pos. and neg wires to it with a small 20k capacitor so as to not have to cut any factory wires. replaced old clamps with new ones and refill with a 50/50 mix of distilled water and m/b antifreeze. total time 2 hrs
be aware the new pump flows much more than the old. consider a code 3 or let heat exchanger so the flow wont back up at the intercooler inlet.
be aware the new pump flows much more than the old. consider a code 3 or let heat exchanger so the flow wont back up at the intercooler inlet.
I just want to thank you guys for helping me out. I wasn't sure the MB community would be, but it seems like everyone is here to help each other out.
MBWorld Fanatic!
Joined: Sep 2008
Posts: 3,152
Likes: 0
From: murfreesboro,tn
2003 porsche 996 turbo
http://www.letmotorsports.com/mb.asp...2&category=all link for let
having done some research on code 3 the results were not positive. so ill retract the code 3 nod and advise to try let or needswings
yes you can run the johnson pump in stock form by adding a larger h/e you are adding more coolant and allowing the flow from the new pump to slow down a bit and not being backed up at the intercooler inlet port
heres anaother example
http://www.needswings.com/Product.as...2-64a650383e72
custom applications
http://www.frozenboost.com/index.php...cf67e49eeb7950
having done some research on code 3 the results were not positive. so ill retract the code 3 nod and advise to try let or needswings
yes you can run the johnson pump in stock form by adding a larger h/e you are adding more coolant and allowing the flow from the new pump to slow down a bit and not being backed up at the intercooler inlet port
heres anaother example
http://www.needswings.com/Product.as...2-64a650383e72
custom applications
http://www.frozenboost.com/index.php...cf67e49eeb7950
Last edited by 320 dreamer; Apr 16, 2009 at 08:10 PM.
Thread Starter
Junior Member
Joined: Apr 2009
Posts: 44
Likes: 0
From: Jupiter
2003 C32 AMG
Well, the i/c pump has been replaced and so far, so good. The car runs great. No codes have popped back up ....yet. We'll see when I drive it tommorow and see what happens. Thanks to all those that have helped out! 
MBWorld Fanatic!
Joined: Feb 2004
Posts: 5,475
Likes: 5
From: City with Tall buildings!
C43/55,2k11 Volvo S60 T6AWD,2k Audi B5 S4,95 Eagle Talon Tsi AWD 500+awhp
So.... You recently acquired your car and you coincidentally get a check engine light soon after your purchase?
Depending on who you purchased the car from, the seller could well have had the same codes and cleared them prior to selling it to you. It's unfortunate, but there are dishonest people like that out there. Sometimes the error codes reappear immediately; however, sometimes the error codes take days (or longer) to reappear.
You scanned via OBDII and found P2027, P207E, P200B, and P2003.
Even though your car only has 51K miles, these codes may not necessarily be related to each other and you may have several issues to contend with.
P2027:
As alluded to by the earlier responses by the guys, this code indicates your implausible IATs and that could be due to a faulty sensor or (more likely) a dysfunctional charge air cooling (IC) pump. Easy fix.
P207E and P200B:
These codes suggest that the efficiency of your left and right primary catalytic converters is insufficient.
You said that you smelled fuel and you are not positive as to which converters are present / absent. Look at the schematic below for the catalytic converters and determine which ones have been removed (if any). If your 1o catalytic converters are absent, then it is not surprising that you have P207E / P200B error codes.
P2003:
Can be related to P0410. This can be a malfunction of the secondary air injection system which is obviously a component of the emissions system. Several components may be suspect in this case; however a common problem is the faulty air pump and / or the air pump relay. If it isn't these, there could be problems with the O2 sensors, misfiring, or the EGR system.
Depending on who you purchased the car from, the seller could well have had the same codes and cleared them prior to selling it to you. It's unfortunate, but there are dishonest people like that out there. Sometimes the error codes reappear immediately; however, sometimes the error codes take days (or longer) to reappear.
You scanned via OBDII and found P2027, P207E, P200B, and P2003.
Even though your car only has 51K miles, these codes may not necessarily be related to each other and you may have several issues to contend with.
P2027:
As alluded to by the earlier responses by the guys, this code indicates your implausible IATs and that could be due to a faulty sensor or (more likely) a dysfunctional charge air cooling (IC) pump. Easy fix.
P207E and P200B:
These codes suggest that the efficiency of your left and right primary catalytic converters is insufficient.
You said that you smelled fuel and you are not positive as to which converters are present / absent. Look at the schematic below for the catalytic converters and determine which ones have been removed (if any). If your 1o catalytic converters are absent, then it is not surprising that you have P207E / P200B error codes.
P2003:
Can be related to P0410. This can be a malfunction of the secondary air injection system which is obviously a component of the emissions system. Several components may be suspect in this case; however a common problem is the faulty air pump and / or the air pump relay. If it isn't these, there could be problems with the O2 sensors, misfiring, or the EGR system.
Member
Joined: Jul 2009
Posts: 125
Likes: 2
From: Marlton
'02 325 xi; '02 C32; '90 ZX; '08 CBR 6RR, '86 V45 Magna
Thanks for the response. I appreciate your input. Yah, it's "funny" how the codes popped up shortly after purchasing the car. I understand there are going to be issues with a used car I just wasn't expecting them already. I paid the car in full so if I have to spend a little cash to keep it up to par then so be it. I was even thinking about getting an aftermarket warranty, but am a little leary with all the fine print of some of those businesses. The new i/c pump is going in tommorow so we'll see if that's the fix. The pump was getting power, but you could tell by touching the pump it wasn't running. From the looks underneath the car it appears the 1o cats are removed. I'm also taking the car for an alignment as it has been lowered, but doesn't appear to have been aligned. Any other tips or suggestions? Being a newbie to MB world I appreciate all the feedback. Thanks!
Member
Joined: Jul 2009
Posts: 125
Likes: 2
From: Marlton
'02 325 xi; '02 C32; '90 ZX; '08 CBR 6RR, '86 V45 Magna
