P0191 06 2500 LBZ, HELP. - Diesel Bombers



Chevy/GMC Duramax 06-07 LBZ Discussion of Chevy and GMC Trucks with LBZ Duramax Turbo Diesel Engines

Reply
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 02-01-2013, 04:23 PM
Diesel Fan
Thread Starter
 
Join Date: Feb 2012
Location: Washington State
Posts: 39
Default P0191 06 2500 LBZ, HELP.

I have an 06 Duramax with a P0191 code and goes into limp mode intermittenly while drivng. P0191 isnt a code set while the vehicle is running, Ive tested the 5V reference circuit and its good, but like I said its intermitten. Vehicle runs good until limp mode. No power loss till then, the FRP sensor and the Fuel Pressure Regulator on the pump have been replaced. Tested continuity of all circuits for FRP sensor and no shorts per Alldata. Could the High Pressure pump be bad and not set codes, like a lack of fuel volume? No aftermarket mods or programming. 102k miles. Brand new fuel filter. Where is the check valve for bleed down of the fuel rails on this system? Is it in the pump, or is that the Regulator on the pump?
Any ideas or has someone run into this before?
thank you.
Eric
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
09 GMC sierra 2500 leveled!? Nathanator Chevy/GMC Duramax 07.5 -10 LMM 0 08-30-2015 04:51 PM
1999 2500 rear differential swap to 2002 2500 gasser differential DirtyDiesel58 24 Valve 2nd Gen Dodge Cummins 98.5-02 0 06-08-2015 12:50 AM
6.5L Stall Problems Above 2500 rpm InheritedDiesel Chevy/GMC 6.2L and 6.5L 11 04-12-2015 05:35 AM
2002 Dodge Ram 2500 - Less Is More Diesel Bombers General Diesel Related 0 12-29-2014 11:20 AM
DT430 Power Package for LBZ duramaxtuner 06-07 LBZ Performance 1 12-10-2014 03:00 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 12:16 AM.