Chevy/GMC Duramax 04.5-05 LLY Discussion of Chevy and GMC Trucks with LLY Duramax Turbo Diesel Engines

Power Problem

Thread Tools
 
Search this Thread
 
Old Jul 20, 2009 | 03:02 PM
  #1  
b_r_a_d_79's Avatar
Thread Starter
|
Diesel Fan
Joined: Mar 2009
Posts: 61
Likes: 0
Default Power Problem

Ive been working on this guys truck and its the sickest truck ive ever rode in.when its taking off it takes about 5 seconds to come on top of its self. sometimes it falls on its face just driving down the road. it keeps throwing a super/turbo charger boost control module code. it has efi live tune, cold air, and egr blocker. we cleaned the air filter replaced feul filter checked the injectors and i checked the play in the turbo theres no play. any ideas?
 
Reply
Old Jul 20, 2009 | 09:37 PM
  #2  
2500HeavyDuty's Avatar
Super Moderator
Joined: Oct 2007
Posts: 14,872
Likes: 764
From: Houston, Tx
Default

im guessing its an lly?

could be an over boost code
 
Reply
Old Jul 21, 2009 | 08:40 AM
  #3  
b_r_a_d_79's Avatar
Thread Starter
|
Diesel Fan
Joined: Mar 2009
Posts: 61
Likes: 0
Default

it is an lly and its not throwing an over boost code and it doesnt sound like its over boosting i watched the boost cuz i thought the same thing. the boost didnt do anything weird it hit 29 lbs
 
Reply
Old Jul 21, 2009 | 05:27 PM
  #4  
2500HeavyDuty's Avatar
Super Moderator
Joined: Oct 2007
Posts: 14,872
Likes: 764
From: Houston, Tx
Default

i hear there is a hidden overboost code on the lly's, fixing it dont know till i play with one
 
Reply
Old Jul 22, 2009 | 11:07 AM
  #5  
b_r_a_d_79's Avatar
Thread Starter
|
Diesel Fan
Joined: Mar 2009
Posts: 61
Likes: 0
Default

would it possiblly be the waste gate going bad
 
Reply
Old Jul 22, 2009 | 04:39 PM
  #6  
2500HeavyDuty's Avatar
Super Moderator
Joined: Oct 2007
Posts: 14,872
Likes: 764
From: Houston, Tx
Default

there is no wastegate on the lly, the vanes in the turbo act as one by controlling boost
 
Reply
Old Jul 23, 2009 | 12:14 AM
  #7  
b_r_a_d_79's Avatar
Thread Starter
|
Diesel Fan
Joined: Mar 2009
Posts: 61
Likes: 0
Default

i was always told it was an electronic wastegait
 
Reply
Old Jul 23, 2009 | 02:38 PM
  #8  
madmatt01's Avatar
Newbie
Joined: Jul 2009
Posts: 9
Likes: 0
From: orange ca
Default

very rare but i had a couple where the vanes were stuck inside and the ring was rusted to the housing
 
Reply
Old Jul 24, 2009 | 12:28 AM
  #9  
b_r_a_d_79's Avatar
Thread Starter
|
Diesel Fan
Joined: Mar 2009
Posts: 61
Likes: 0
Default

could that give me an idea by watching the boost
 
Reply
Old Jul 24, 2009 | 04:21 PM
  #10  
2500HeavyDuty's Avatar
Super Moderator
Joined: Oct 2007
Posts: 14,872
Likes: 764
From: Houston, Tx
Default

and if vane postion does not meet desired
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
burndiesel
24 Valve 2nd Gen Dodge Cummins 98.5-02
10
Feb 7, 2023 01:15 AM
sweetv8s10
12 Valve 2nd Gen Dodge Cummins 94-98
3
Oct 7, 2014 09:47 PM




All times are GMT -5. The time now is 03:06 AM.