ISX egr valve - TheDieselGarage.com
Thread Details Posted by Spike 64, this thread has received 11 replies and been viewed 23804 times.

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 12 (permalink) Old 10-04-2009, 03:56 AM Thread Starter
Senior Member
 
Spike 64's Avatar
 
Join Date: Dec 2008
Location: San Antonio Tx
Posts: 217
Points: 27,909
Thanks: 51
Thanked 77 Times in 23 Posts
Garage
ISX egr valve

My buddy heard that you can disable the egr valve on an (05) ISX by leaving it on ''test mode'',also it suppose to make it run better . Question is, anybody know how to set it?....Thank's

FRED
  • '04' Freighliner classic, W/Cat C15 BXS @ 475HP ,10spd, 3:70's
  • '07' 2500Goat,Auto,3:73's,Smarty jr, 315's
Spike 64 is offline  
Sponsored Links
Advertisement
 
post #2 of 12 (permalink) Old 10-04-2009, 01:11 PM
Wanna be door swinger
 
pullingtrucker's Avatar
 
Join Date: Dec 2008
Location: Fostoria, Ohio
Posts: 422
Points: 33,904
Thanks: 41
Thanked 56 Times in 47 Posts
Send a message via Yahoo to pullingtrucker
From what I hear a person just turns the trucks key into the run position (not starting it), lets the electronics cycle through their normal deal and then after that is completed just unplug the EGR harness at the EGR valve. Make sure they tape up both ends of the plug. This is all done easier with the engine cold since you have to digging around the EGR valve.

I have heard that this can throw a check engine light but that is all i know.

'06 379 Peterbilt with a C-15 MXS 550hp, 200gph FASS, high flow mufflers, fuel harness, shimmed fuel pump, crankshaft balancer, Bully Dog Big Rig downloader, Bully Dog exhuast manifold, Spinner II bypass filter , a big Detroit Radiator, custom built Lipe clutch, Schaeffer's synthetics in all boxes, and a 18 speed tranny.

'06 53' Utility 3000R with a Carrier unit hanging on the nose. Just a plain trailer with little frills.

Ridin Dirty Club #12
pullingtrucker is offline  
post #3 of 12 (permalink) Old 10-05-2009, 02:58 AM Thread Starter
Senior Member
Threadstarter
 
Spike 64's Avatar
 
Join Date: Dec 2008
Location: San Antonio Tx
Posts: 217
Points: 27,909
Thanks: 51
Thanked 77 Times in 23 Posts
Garage
Quote:
Originally Posted by pullingtrucker View Post
From what I hear a person just turns the trucks key into the run position (not starting it), lets the electronics cycle through their normal deal and then after that is completed just unplug the EGR harness at the EGR valve. Make sure they tape up both ends of the plug. This is all done easier with the engine cold since you have to digging around the EGR valve.

I have heard that this can throw a check engine light but that is all i know.
Thank's ,Ill tell him to try it.

FRED
  • '04' Freighliner classic, W/Cat C15 BXS @ 475HP ,10spd, 3:70's
  • '07' 2500Goat,Auto,3:73's,Smarty jr, 315's
Spike 64 is offline  
post #4 of 12 (permalink) Old 10-07-2009, 02:06 PM
Junior Member
 
CumminsISXpower's Avatar
 
Join Date: Aug 2009
Location: Illinois
Posts: 281
Points: 41,556
Thanks: 3
Thanked 39 Times in 30 Posts
It don't work you will get a derate situation!!!
CumminsISXpower is offline  
post #5 of 12 (permalink) Old 10-07-2009, 03:44 PM
Junior Member
 
m37charlie's Avatar
 
Join Date: Aug 2009
Posts: 60
Points: 18,008
Thanks: 1
Thanked 4 Times in 4 Posts
What I did on my 05 Mercedes 6.4L 902.912 is have a 1/4" plate made using the gasket as a template. I took the EGR cooler off and used the plate instead. I left the valve wired in, zip-tied to something, otherwise hooked up to nothing. No error messages or de-rate. The computer therefore can't know the EGR is gone.
If the system has a EGR temperature sensor on the tubing from the cooler to the intake then you might get an error message/derate doing this.

Charlie
Unimog U500/Unicat camper
m37charlie is offline  
post #6 of 12 (permalink) Old 10-07-2009, 06:35 PM
Junior Member
 
CumminsISXpower's Avatar
 
Join Date: Aug 2009
Location: Illinois
Posts: 281
Points: 41,556
Thanks: 3
Thanked 39 Times in 30 Posts
I work in a dealers shop,I see people daily trying to get around the egr valve,have yet to see one actaully effective with no codes,if you block it off you with have a egr temp code,and have a derate
CumminsISXpower is offline  
post #7 of 12 (permalink) Old 10-08-2009, 03:54 AM
Junior Member
 
Join Date: Jan 2009
Posts: 76
Points: 20,253
Thanks: 0
Thanked 2 Times in 2 Posts
Derate wouldn't be so bad. Probably wouldn't even notice a difference on the POS 2008 ISX that we bought.
rank is offline  
post #8 of 12 (permalink) Old 10-08-2009, 02:12 PM
Junior Member
 
CumminsISXpower's Avatar
 
Join Date: Aug 2009
Location: Illinois
Posts: 281
Points: 41,556
Thanks: 3
Thanked 39 Times in 30 Posts
What horsepower is the new one??
CumminsISXpower is offline  
post #9 of 12 (permalink) Old 10-11-2009, 02:26 PM
PB SHOP FOREMAN
 
domniman2002's Avatar
 
Join Date: Aug 2009
Location: NASHVILLE
Posts: 97
Points: 19,151
Thanks: 0
Thanked 13 Times in 11 Posts
sounds to me like the 08 model has been cut back...the new ones are running out great with the egr cooler internally leaking being the only real down fall that it has.....good engine for now.......ive been cert. on cummins for about 27yrs and this one seems to be the easiest one yet to diagnose and be mechanic friendly with the right insite software to work on them with. just make sure that the ecm code verisions stay up to snuff and it should run out good for you.
as far as bypassing the egr valve...i also am a dealership foreman and i would say that anything that the ecm is seeing a response back for that is not seen will cause a fc in the system, the turbo or inlet temp will probly cause a real problem with it. its there for a reason and am not sure why you would want to block it off anyways. hmm
domniman2002 is offline  
post #10 of 12 (permalink) Old 10-11-2009, 04:26 PM
Junior Member
 
m37charlie's Avatar
 
Join Date: Aug 2009
Posts: 60
Points: 18,008
Thanks: 1
Thanked 4 Times in 4 Posts
Quote:
Originally Posted by domniman2002 View Post
its there for a reason and am not sure why you would want to block it off anyways. hmm
The reason is to reduce NOx, but in pre-07 models it also increases particulate pollution.
Why block it off? No more soot buildup on turbo compressor blades, longer oil life, longer engine life, better fuel economy, no more leaky cooler that can seriously damage the engine with glycol in the oil. And lower particulate emissions.
Admittedly, in some engines EGR also serves another role: in the Ford/Navistar 6.4, if the turbo wastegate malfunctions and the turbo overspeeds, the EGR valve opens to allow extra pressure to flow the opposite of normal direction to bleed pressure away.
But IMHO it's there for only the first reason in a pre-07 engine.
I know nothing specific about the ISX but I do have some expertise re the Mercedes 902.912.

Charlie

Last edited by m37charlie; 10-11-2009 at 04:28 PM.
m37charlie is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the TheDieselGarage.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
24 valve head on a 12 valve? Hotrodx199 5.9L Cummins 12 Valve (1994-1998.5) 11 05-23-2009 11:02 PM
24 Valve 98-02 Valve Cover TLadd Whats Been Sold 2 04-17-2009 02:38 PM
Air shutoff valve and 3 way fuel valve '05Supersmoker Sled Pulling 2 02-04-2008 11:23 PM
cummins 60 lbs valve springs 12 valve imported_machine2 Whats Been Sold 0 05-07-2007 11:58 PM
1998 24-valve compared to 12-valve Michael 5.9L Cummins (1998.5-2002) 1 06-28-2006 04:22 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome