Duramax Diesels Forum Truck of the Week
Prev Previous Post   Next Post Next
Old 08-16-2014, 10:57 AM
dbdoug dbdoug is offline
Join Date: Aug 2014
Posts: 1
Default P0087 low rail pressure need help

I have a 2003 GMC Sierra with LB7 . code P0087 will set when engine is warm and stopping at a traffic light, goes into limp mode till codes are reset. Engine seems to be down on power. The truck starts without any problems. I have changed the FRP Sensor and the FPR. I've removed fuel tank and inside was spotless. Replaced all hoses on low pressure side along with new filter and WIF sensor. checked for air leaks and tried adding a lift pump. When trying to command high fuel pressure the actual pressure doesn't change at all. Fuel pressure does go up as throttle increases and is slightly below desired pressure ( about 1,000-1,500 psi)
Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes

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

Forum Jump

All times are GMT -7. The time now is 05:49 PM.

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.