Diesel Bombers

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-   Chevy/GMC Duramax 04.5-05 LLY (https://www.dieselbombers.com/chevy-gmc-duramax-04-5-05-lly/)
-   -   Power Problem (https://www.dieselbombers.com/chevy-gmc-duramax-04-5-05-lly/29554-power-problem.html)

b_r_a_d_79 07-20-2009 03:02 PM

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?

2500HeavyDuty 07-20-2009 09:37 PM

im guessing its an lly?

could be an over boost code

b_r_a_d_79 07-21-2009 08:40 AM

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

2500HeavyDuty 07-21-2009 05:27 PM

i hear there is a hidden overboost code on the lly's, fixing it dont know till i play with one

b_r_a_d_79 07-22-2009 11:07 AM

would it possiblly be the waste gate going bad

2500HeavyDuty 07-22-2009 04:39 PM

there is no wastegate on the lly, the vanes in the turbo act as one by controlling boost

b_r_a_d_79 07-23-2009 12:14 AM

i was always told it was an electronic wastegait

madmatt01 07-23-2009 02:38 PM

very rare but i had a couple where the vanes were stuck inside and the ring was rusted to the housing

b_r_a_d_79 07-24-2009 12:28 AM

could that give me an idea by watching the boost

2500HeavyDuty 07-24-2009 04:21 PM

and if vane postion does not meet desired


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