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12-01-2012, 07:01 PM
| eBay Motors #1 (permalink) |
| DuramaxForum n00b  Join Date: Nov 2012
Posts: 11
| Changed Fuel PRV Engine still has minor surging Changed FPR on cp3 this afternoon engine idle in gear is much smoother now but every now and then idle still drops then picks back up when I let off the brake @735 rpm norm idle is around 680 any thoughts or ideas? Thanks surge is between 635 to 735. Last edited by IA DMAX; 12-01-2012 at 08:41 PM. |
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12-01-2012, 07:11 PM
| eBay Motors #2 (permalink) |
| Senior Member  Join Date: Aug 2011 Location: Jersey
Posts: 744
| I thought Fprv was on the fuel rail not on the cp3.
__________________ 2006 Chevy Silverado ..LBZ..mbrp 5" turbo exhaust (no muffler or cats) modified stock air intake, EFI by Kory Willis, Big Dipper stage IV trans, Precision ML, Pump rub fix, Alligator trans lines, Autometer guages, Airdog II-165, Ready Lift leveling kit, 285/75 Nitto Dune Grappler, Bilstein shocks, Cognito idler and pitman arm braces, PPE tie rod sleeves, fingerstick, blocker plate, pvc reroute,air intake regulator blocked, Banks boost tube, All Amsoil fluids |
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12-01-2012, 07:14 PM
| eBay Motors #3 (permalink) |
| DuramaxForum n00b Join Date: Nov 2012
Posts: 11
| Its the solenoid that regulates fuel pressure three t-25 screws hold it on the CP3 |
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12-01-2012, 07:30 PM
| eBay Motors #4 (permalink) |
| Duramax Forum Supporter   Join Date: Feb 2011
Posts: 1,547
| Isnt that the regulator? The one on the rail is pressure relief. I think they are two different things. |
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12-01-2012, 07:50 PM
| eBay Motors #5 (permalink) |
| DuramaxForum n00b Join Date: Nov 2012
Posts: 11
| Yes it's the regulator FPR on the CP3 fuel pump |
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12-02-2012, 03:20 AM
| eBay Motors #6 (permalink) |
| DuramaxForum n00b Join Date: Nov 2012
Posts: 11
| Bump ^^ |
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12-02-2012, 05:47 AM
| eBay Motors #7 (permalink) | |
| DuramaxForum Enthusiast Join Date: Sep 2010 Location: Maritimes, Canada
Posts: 3,830
| Quote:
Yes, they are.... FPR = Fuel Pressure Regulator (on CP3) FPRV = Fuel Pressure Relief Valve (on fuel rail) OP, please fill out your sig so we know what truck you have and any mods. That being said if it's an LLY try ice picking your injectors and reinsulating the FICM harness at the alternator bracket.
__________________ 2005 Silverado EC/SB, LLY, 4WD, EFI DSP5 V2 (Idaho Rob at ATP), Edge CTS w/ EGT probe, LML Exhaust Manifold, PPE shimmed FPRV, Banks LBZ air cleaner, Profab intake, LBZ Turbo Mouthpiece, Kennedy twin lift pumps w/ megafilter, Corsa 304 SS Exhaust, Mike L tranny cooler, EXAXT Steering System, Redhead Power Steering Box w/ Amsoil PS fluid, Green Torsion Keys, Allison Deep Pan w/ Suncoast Filterlock and Transynd ATF, Bilstein 5100's (Norcal), Cognito UCA's, 17" NBS alloy rims, 265/70R17 Michelin LTX M/S2's, Pioneer AVH-P3200BT, CubbyCam Backup Camera, Pop & Lock Power Tailgate Lock, Extang Solid Fold Tonneau Cover, Tekonsha P3 Brake controller, Alphatherm AT-38OD Washer Fluid Heater Last edited by MTL_Dmax; 12-02-2012 at 05:49 AM. | |
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12-03-2012, 04:20 PM
| eBay Motors #8 (permalink) |
| DuramaxForum n00b Join Date: Nov 2012
Posts: 11
| Updated sig
__________________ 04 lb7, edge insight CTS monitor, 4" Mbrp straight pipe exhaust, edge cts EGT probe, S&B cold air intake, PPE Boost Increase Valve, Lb7 recalibrated ECU (5tunesDURAMAX Tuner Chicago), FASS 95 gpm fuel system. Stock injectors new 9, 000 miles ago. New FPR installed 12-02-12. |
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12-03-2012, 04:22 PM
| eBay Motors #9 (permalink) |
| DuramaxForum n00b Join Date: Nov 2012
Posts: 11
| Also transmission rebuildt and 3 disc billet torque converter installed
__________________ 04 lb7, edge insight CTS monitor, 4" Mbrp straight pipe exhaust, edge cts EGT probe, S&B cold air intake, PPE Boost Increase Valve, Lb7 recalibrated ECU (5tunesDURAMAX Tuner Chicago), FASS 95 gpm fuel system. Stock injectors new 9, 000 miles ago. New FPR installed 12-02-12. |
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12-03-2012, 05:13 PM
| eBay Motors #10 (permalink) |
| Duramax Forum Supporter  Join Date: Nov 2012
Posts: 290
| what is ice picking your inj mean
__________________ 2005 crew cab,Cowl hood,,Vision19.5 wheels,Afe blade runner,Afe cold air intake ,mbrb duals,,edge cts, EFI Live by Kory Willis from mrmanners,egr delete,pcv ReRoute,PPE’s Performance Silicone Hoses GM DRW club member 146 2010 tahoe wifes ride 2013 forest river wolfpack 30ft toyhauler |
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