jQuery not supported.



K&N Filter causing problems

Bad performance and DPF, low power faults

K&N Filter causing problems

Postby mtank [OP] » Apr 01 2011, 12:06am

I have a 2007 GMC 2500 HD 4x4 with 6.6L DMax.
I installed a K & N Filter and almost immediately experienced problems. I had the DIC warning that the engine was producing low power, acceleration was about the same as a bicycle, and I had the particulate filter cleaning fault. My fuel mileage tanked down to about 7MPG.
Was under warranty so off to the dealer who was going to do the DPF "bake off" and they noticed the K & N filter. They wouldn't touch it and said to switch back to stock filter. Luckily I saved the stock filter and immediately reinstalled it. Problems went away and performance, fuel mileage, etc went back to normal.

What gives? Has anyone else experienced this? The DMax can run a K & N filter right??
Original Poster
mtank
Firing on 2 cylinders [L1]
Firing on 2 cylinders [L1]
Posts: 24
Topics: 3
Joined: Mar 26 2011, 2:25am
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: Florida
Year: 2007
Make/Model: GMC Sierra
Extra Info: HD 2500 6.6L 4x4
Group Membership:
Registered users

Re: K&N Filter causing problems

Postby koolz71 » Apr 03 2011, 1:51pm

First off welcome to the site. I havent heard of a filter causing that much havoc. But the dealer may think it has something to do with the oil residue from the filter causing issues maybe? You can try a dry filter. See if it gives you the same problems, Also try to take off the negative wire on the battery while you are doing the install. Let the computer reprogram itself.
Crap, my hampster fell off the wheel and it broke its leg.

Check out my blog



Image
User avatar
koolz71
Shifting into Sixth Gear! [L3]
Shifting into Sixth Gear! [L3]
Posts: 2370
Topics: 91
Images: 44
Joined: Mar 13 2010, 11:24pm
Years of membership: 4 years of membership4 years of membership4 years of membership4 years of membership
Location: ohio
Year: 2004
Make/Model: Chevrolet Silverado
Extra Info: Z71
Group Membership:
Registered users

Re: K&N Filter causing problems

Postby mtank [OP] » Apr 03 2011, 4:45pm

Thanks for the welcome koolz71.
I'll try your suggestion, I think you're on to something. The DPF warning boiled down to "There's more air coming in than exiting" based upon stored performance in the computer? The MAF fault was not due to an oily or dirty filter, I didn't oil it, I installed it new from the box. I took the MAF sensor out to look at it and it is as clean as can be. I think that boiled down to a large increase in mass air flow compared to previous performance. So, I'll give disconecting the batt a shot and see what happens. THANKS!
Original Poster
mtank
Firing on 2 cylinders [L1]
Firing on 2 cylinders [L1]
Posts: 24
Topics: 3
Joined: Mar 26 2011, 2:25am
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: Florida
Year: 2007
Make/Model: GMC Sierra
Extra Info: HD 2500 6.6L 4x4
Group Membership:
Registered users

Re: K&N Filter causing problems

Postby davidbarrett » Apr 03 2011, 5:08pm

Welcome to the site, Also another question arising from what koolz71 said, if you remove the negative wire from the battery, would you loose the security on the radio and if the answer is yes how do you find out what the code is and how do you put it back after you loose it. Sorry to jump in on another topic, but it was also a welcome to the site for mtank.
David Barrett
Image
User avatar
davidbarrett
4x4 Low Mode [L3]
4x4 Low Mode [L3]
Posts: 1708
Topics: 15
Images: 12
Joined: Oct 29 2010, 4:45pm
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: Ontario Canada
Year: 2010
Make/Model: Chevrolet Silverado
Extra Info: 2500 HD Ext cab
Group Membership:
How-to Authors
Registered users
Servicemen

Re: K&N Filter causing problems

Postby davidbarrett » Apr 03 2011, 5:09pm

Hey I just noticed I am running on 8 cylinders lol
David Barrett
Image
User avatar
davidbarrett
4x4 Low Mode [L3]
4x4 Low Mode [L3]
Posts: 1708
Topics: 15
Images: 12
Joined: Oct 29 2010, 4:45pm
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: Ontario Canada
Year: 2010
Make/Model: Chevrolet Silverado
Extra Info: 2500 HD Ext cab
Group Membership:
How-to Authors
Registered users
Servicemen

Re: K&N Filter causing problems

Postby koolz71 » Apr 03 2011, 10:44pm

you shouldnt get locked out of your radio..i think it will only require a code whenever the radio is disconnected. I have never had to enter in my security code...but thats my experience
Crap, my hampster fell off the wheel and it broke its leg.

Check out my blog



Image
User avatar
koolz71
Shifting into Sixth Gear! [L3]
Shifting into Sixth Gear! [L3]
Posts: 2370
Topics: 91
Images: 44
Joined: Mar 13 2010, 11:24pm
Years of membership: 4 years of membership4 years of membership4 years of membership4 years of membership
Location: ohio
Year: 2004
Make/Model: Chevrolet Silverado
Extra Info: Z71
Group Membership:
Registered users

Re: K&N Filter causing problems

Postby SteveB » Jun 30 2013, 8:10pm

Hard to figure. My '05 D'max had a K&N on it when I bought it with 50k miles. I just did the standard clean out and retreated it with K&N renewer and haven't had any problems. I get what I consider good mileage (16/17 in town, 19 hwy) and it pulled my 9500lb RV in the Georgia mountains better than I could have imagined.
SteveB
Newbie
Newbie
Posts: 4
Topics: 1
Joined: May 25 2013, 5:20pm
Years of membership: 1 year of membership
Location: Pensacola, FL
Year: 2005
Make/Model: Chevrolet Silverado
Extra Info: 2500HD Diesel
Group Membership:
Registered users

Return to Duramax 6600 6.6L V8 Diesel

 

  • Similar topics
    Replies
    Views
    Last post

Common search terms

think welcome installed same back bought miles dealer while another anyone fuel power engine causing filter problems thanks first right stock

It is currently Oct 20 2014, 6:54pm

  • Sponsor
Login  •  Register
SHOP TALK (Live Chat)
Duramax 6600 6.6L V8 Diesel Forum
Duramax 6600 6.6L V8 Diesel specific.
To create a new topic in Duramax 6600 6.6L V8 Diesel, click this button:
Previous topic Next topic
Sitewide News Sitemaps & Feeds

Who is online

Users browsing this forum: No registered users and 1 guest