Duramax Diesels Forum Truck of the Week
  #1  
Old 07-14-2017, 09:01 AM
jojo jojo is offline
Gearhead
 
Join Date: Dec 2013
Location: Southern California
Posts: 58

Default Codes PO 0090/U1800

Codes will not clear/erase.

Has the computer or FICM failed?

Background: code PO 0090 had tripped and Truck would not start until code was cleared. Code PO 0090 would not clear after multiple attempts to clear and U1800 appeared on scanner.

I replaced cp3. Code will not clear
__________________
02 GMC CC/LB SLT 165,000
Federal, 30 over injectors, profab intake horn, MBRP down pipe, PPE boost, Air Dog II 165, S & B intake, 4 inch RBP exhaust, nicktane fuel filter adapter, Allison drivers side dipstick tube
Reply With Quote
  #2  
Old 07-14-2017, 09:04 AM
aashton1206 aashton1206 is offline
Hotrodder
 
Join Date: Sep 2015
Posts: 163
Default

New fpr


2004 Silverado Cali lb7, Airdog ll 165, fresh sticks at 325k, Rick Fletes Dsp 5 on v2, 33x12.5 nitto at on 20 inch American Racing 20x10 wheels, Stage 5 Built Transmission by Mike Cole with triple disc billet low stall converter, 4 inch Injen cold air intake, 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 axle dump, lbz cp3 pump, Dual Yellow Top Optimas, High Output Alternator, Cognito Pittman and idler w/ support kit, Cognito Upper Contol arms, Drilled and Slotted Rotors on all four Corners, FED Y Bridge, Shantz Custom Fab Traction Bars.
Reply With Quote
  #3  
Old 07-14-2017, 09:11 AM
Chevy1925's Avatar
Chevy1925 Chevy1925 is offline
don't know sh!t about IFS

 
Join Date: Oct 2009
Location: Phoenix Az
Posts: 13,474

Default

you need to check the wiring to the FPR, ohm it, check for voltage, etc. then test the FPR. you keep clearing the computers is probably causing the u1800
__________________
James

02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
Tailgate Crew Member #4
Reply With Quote
  #4  
Old 07-14-2017, 12:19 PM
jojo jojo is offline
Gearhead
 
Join Date: Dec 2013
Location: Southern California
Posts: 58

Default

What should the reading be on the voltage tester if system checks out good?
__________________
02 GMC CC/LB SLT 165,000
Federal, 30 over injectors, profab intake horn, MBRP down pipe, PPE boost, Air Dog II 165, S & B intake, 4 inch RBP exhaust, nicktane fuel filter adapter, Allison drivers side dipstick tube
Reply With Quote
  #5  
Old 07-17-2017, 01:08 PM
jojo jojo is offline
Gearhead
 
Join Date: Dec 2013
Location: Southern California
Posts: 58

Default

Sorry for not getting back to this sooner. Got busy with life.

Multimeter reads very little out of FPR output. 0.04, at best. Is there a fuse or relay that can be checked? I'm under the hood right now.
__________________
02 GMC CC/LB SLT 165,000
Federal, 30 over injectors, profab intake horn, MBRP down pipe, PPE boost, Air Dog II 165, S & B intake, 4 inch RBP exhaust, nicktane fuel filter adapter, Allison drivers side dipstick tube
Reply With Quote
  #6  
Old 07-17-2017, 02:06 PM
jojo jojo is offline
Gearhead
 
Join Date: Dec 2013
Location: Southern California
Posts: 58

Default

Correction. A reading of 0.04 from FPR harness connector, with key in on position.
__________________
02 GMC CC/LB SLT 165,000
Federal, 30 over injectors, profab intake horn, MBRP down pipe, PPE boost, Air Dog II 165, S & B intake, 4 inch RBP exhaust, nicktane fuel filter adapter, Allison drivers side dipstick tube
Reply With Quote
  #7  
Old 07-17-2017, 02:44 PM
jojo jojo is offline
Gearhead
 
Join Date: Dec 2013
Location: Southern California
Posts: 58

Default

Does the FICM control signal to the FPR?

I'm starting to believe that the FICM has failed.
__________________
02 GMC CC/LB SLT 165,000
Federal, 30 over injectors, profab intake horn, MBRP down pipe, PPE boost, Air Dog II 165, S & B intake, 4 inch RBP exhaust, nicktane fuel filter adapter, Allison drivers side dipstick tube
Reply With Quote
  #8  
Old 07-17-2017, 03:12 PM
aashton1206 aashton1206 is offline
Hotrodder
 
Join Date: Sep 2015
Posts: 163
Default

I pmed you giving an explanation


2004 Silverado Cali lb7, Airdog ll 165, fresh sticks at 325k, Rick Fletes Dsp 5 on v2, 33x12.5 nitto at on 20 inch American Racing 20x10 wheels, Stage 5 Built Transmission by Mike Cole with triple disc billet low stall converter, 4 inch Injen cold air intake, 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 axle dump, lbz cp3 pump, Dual Yellow Top Optimas, High Output Alternator, Cognito Pittman and idler w/ support kit, Cognito Upper Contol arms, Drilled and Slotted Rotors on all four Corners, FED Y Bridge, Shantz Custom Fab Traction Bars.
Reply With Quote
  #9  
Old 07-17-2017, 04:04 PM
jojo jojo is offline
Gearhead
 
Join Date: Dec 2013
Location: Southern California
Posts: 58

Default

Received and returned.
__________________
02 GMC CC/LB SLT 165,000
Federal, 30 over injectors, profab intake horn, MBRP down pipe, PPE boost, Air Dog II 165, S & B intake, 4 inch RBP exhaust, nicktane fuel filter adapter, Allison drivers side dipstick tube
Reply With Quote
  #10  
Old 07-17-2017, 09:55 PM
DAVe3283's Avatar
DAVe3283 DAVe3283 is offline
Heavy & Slow



 
Join Date: Sep 2009
Location: Boise, ID, USA
Posts: 2,468

Default

Why not post the explanation here where it can help others in the future? Not like there are any trade secrets around diagnosing a FPR.

Sent from my S60 using Tapatalk
__________________

Reply With Quote
  #11  
Old 07-18-2017, 04:23 AM
aashton1206 aashton1206 is offline
Hotrodder
 
Join Date: Sep 2015
Posts: 163
Default Codes PO 0090/U1800

Because we are in the secret itstheecmclubandyounotinvited club. Jojo needs a new ecm to regulate the few fpr.


2004 Silverado Cali lb7, Airdog ll 165, fresh sticks at 325k, Rick Fletes Dsp 5 on v2, 33x12.5 nitto at on 20 inch American Racing 20x10 wheels, Stage 5 Built Transmission by Mike Cole with triple disc billet low stall converter, 4 inch Injen cold air intake, 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 axle dump, lbz cp3 pump, Dual Yellow Top Optimas, High Output Alternator, Cognito Pittman and idler w/ support kit, Cognito Upper Contol arms, Drilled and Slotted Rotors on all four Corners, FED Y Bridge, Shantz Custom Fab Traction Bars.
Reply With Quote
Reply


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 03:53 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
vB.Sponsors