I have an 03 lb7 with 122xxx on it. I just had a 4inch exhaust, egr delete, fass fuel pump, s&b intake, and efi live installed this week. I picked it up yesterday and it runs great, after about 45 miles of driving my check engine light came on. Code is p0089 fuel pressure regulator performance. With the light on it still runs great, Is it still safe to drive? And any ideas where I should start looking? This is my first diesel so I'm pretty new. Thanks in advance guys.
Check engine light after new mods
- Thread starter Dave69
- Start date
Sounds like fuel pump pressure is set too high or too low. I forget which one that code is
Sent from my SAMSUNG-SGH-I747 using Tapatalk
Sent from my SAMSUNG-SGH-I747 using Tapatalk
Turn you lifter pump pressure down to 7psi. If it is alrighty at its min then you need to cut 2 coils from the regulator spring and turn the pressure up to 7.
2004 Silverado Cali lb7, Airdog ll 165, fresh sticks at 325k, custom tuning on v2 by Rick Fletes, 33x12.5 nittos at on 20 inch American steal wheels, modded factory air box, Profab Intake Horn, Batmo Wheel, Turbo port and polish, Full EGR Removed w/ fed belt, 3.5 inch MBRP Downpipe, Full five inch MBRP Exhaust, 10mm lbz cp3 pump, Dual Yellow Top Optimas, High Output Alternator, Cognito Pittman and idler w/ support kit, Cognito Contol arms, Drilled and Slotted Rotors on all four Corners, Custom Y Bridge.
2004 Silverado Cali lb7, Airdog ll 165, fresh sticks at 325k, custom tuning on v2 by Rick Fletes, 33x12.5 nittos at on 20 inch American steal wheels, modded factory air box, Profab Intake Horn, Batmo Wheel, Turbo port and polish, Full EGR Removed w/ fed belt, 3.5 inch MBRP Downpipe, Full five inch MBRP Exhaust, 10mm lbz cp3 pump, Dual Yellow Top Optimas, High Output Alternator, Cognito Pittman and idler w/ support kit, Cognito Contol arms, Drilled and Slotted Rotors on all four Corners, Custom Y Bridge.