Finished my Build now P0461 ISSUE - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

injector · 04-14-2013, 06:37 AM

Hi All,

I finished my Build and I'm really happy , but now I've a fuel level issue. My fuel gauge will jump around throughout the day, Zero , half and so on. Check engine with a p0461 code.. During my build we found that LPE dual pumps (electronic version) was not calibrated for ,hence fuel pressure drop. So we got it calibrated for.

I read somewhere that the calibration provided by LPE has some flaws in them and that was fixed by either by JRE or adm (Can't remember exactly). I've also seen a thread by bull a while ago and I believe he switched to squash system now.. So not sure if he got the chance to find a solution to fix this issue.

Any help would be appreciated.. My tuner uses EFI live so that is not a problem.

ADM PERFORMANCE · 04-14-2013, 07:05 AM

Quote:

Originally Posted by injector

Hi All,

I finished my Build and I'm really happy , but now I've a fuel level issue. My fuel gauge will jump around throughout the day, Zero , half and so on. Check engine with a p0461 code.. During my build we found that LPE dual pumps (electronic version) was not calibrated for ,hence fuel pressure drop. So we got it calibrated for.

I read somewhere that the calibration provided by LPE has some flaws in them and that was fixed by either by JRE or adm (Can't remember exactly). I've also seen a thread by bull a while ago and I believe he switched to squash system now.. So not sure if he got the chance to find a solution to fix this issue.

Any help would be appreciated.. My tuner uses EFI live so that is not a problem.

It is not a tune problem currently:

Start here:

http://www.ls2.com/boggs/dtcs/DTC%20P0461.htm

BigMatt · 04-14-2013, 07:19 AM

I remember a while ago somebody had this same problem and it turned out they didn't have their wiring correct.

mercedestech · 04-14-2013, 07:34 AM

Pay very close attention to all of the pins that get swapped into the new connector for the lpe fuel pump module. After installing mine I kept losing the fuel pressure sensor input to the module. I cant remember the exact code it was giving me, but the problem ended up being one of the female pins was spread and not making good contact. I found it by taking a male pin and checking all of the wires that had anything to do with the code I was getting by making sure each one felt snug when inserting the male pin. A pin drag test if you will. I crimped a new female pin on the wire with the issue and have been good since. Hope that helps. I had to go to the dealer for the new pin as it was part of the cars original wiring harness, but they didn't even charge me for it. The have hundreds of different pins organized in boxes in the shop for just this type of repair.

injector · 04-14-2013, 11:52 AM

Thanks guys.. Dropped it today will check the wiring first.. Feels to me like a wiring issue..never had this issue before... Hopes nothing major..

ADM PERFORMANCE · 04-14-2013, 12:43 PM

Quote:

Originally Posted by injector

Thanks guys.. Dropped it today will check the wiring first.. Feels to me like a wiring issue..never had this issue before... Hopes nothing major..

I want everyone on this board to know that the fuel level data does not go through the fuel pump control module. Fuel level Sensor data goes directly to the ECM. The only place that you can make a mistake is at the fuel level Sensor data wiring inside the tank outside the tank and at the connectors above the tank

mercedestech · 04-14-2013, 03:53 PM

Quote:

Originally Posted by ADM PERFORMANCE

I want everyone on this board to know that the fuel level data does not go through the fuel pump control module. Fuel level Sensor data goes directly to the ECM. The only place that you can make a mistake is at the fuel level Sensor data wiring inside the tank outside the tank and at the connectors above the tank

Thanks Andy. I didn't realize the fuel sensor wires went straight to the ecm. Looks like the OP is going to have to drop the tank again and recheck all of his connections.

injector · 04-14-2013, 04:39 PM

Quote:

Originally Posted by mercedestech

Thanks Andy. I didn't realize the fuel sensor wires went straight to the ecm. Looks like the OP is going to have to drop the tank again and recheck all of his connections.

I think so myself.Will get back with more details once done..

swiftkart · 04-15-2013, 11:32 AM

Double check that you didn't hit the fuel sensor slightly when putting it in the tank, I did and that pulled the very thin light weight electrical metering arm awat from it's contact so it would touch at one point and not at another, I throw the same code and about pulled my hair chasing it along with wiring and then pulled the pump and saw it, put a new sensor problem solved

ADM PERFORMANCE · 04-15-2013, 04:48 PM

Quote:

Originally Posted by swiftkart

Double check that you didn't hit the fuel sensor slightly when putting it in the tank, I did and that pulled the very thin light weight electrical metering arm awat from it's contact so it would touch at one point and not at another, I throw the same code and about pulled my hair chasing it along with wiring and then pulled the pump and saw it, put a new sensor problem solved

04-14-2013, 06:37 AM	#1
injector Drives: LS3 Join Date: Mar 2012 Location: Qatar Posts: 122	Finished my Build now P0461 ISSUE Hi All, I finished my Build and I'm really happy , but now I've a fuel level issue. My fuel gauge will jump around throughout the day, Zero , half and so on. Check engine with a p0461 code.. During my build we found that LPE dual pumps (electronic version) was not calibrated for ,hence fuel pressure drop. So we got it calibrated for. I read somewhere that the calibration provided by LPE has some flaws in them and that was fixed by either by JRE or adm (Can't remember exactly). I've also seen a thread by bull a while ago and I believe he switched to squash system now.. So not sure if he got the chance to find a solution to fix this issue. Any help would be appreciated.. My tuner uses EFI live so that is not a problem. __________________ Texas Speed & Performance Custom Built Forged 408 CID, PRC LS3 260CC,Fast Intake & NW 102 TB, Alky Methanol kit, ID850, LPE Dual pumps,,Melling HV oil Pump. D1SC 10PSI, Stage 2 Air Intake,Magnaflow Axle back, Mcleod clutch, Pedders XA coilovers and sway bars, HD bushings, Hurst shifter, ACS bumper and hood ports, DSS aluminum drive shaft, CSF radiator .

04-14-2013, 07:19 AM	#3
BigMatt 2010 Camaro 2 SS/RS M6 Drives: 2010 Camaro SS/RS Join Date: May 2009 Location: Clayton Delaware Posts: 1,218 View My Garage	I remember a while ago somebody had this same problem and it turned out they didn't have their wiring correct. __________________ Forged LS3, FED M311 heads, CAI Inc, ARH 1 7/8, Corsa Xtreme, Taylor Wires, MGW Shifter, Street slayer twin carbon clutch, Tick braided clutch line & speed bleeder, ZL1 Diff Swap, BMR Split drop, Sway Bars, Trailing Arms, Toe Rods, Pro bushing kit, Carslyle racing 15in conversion, Whipple, LPE dual fuel pumps, Rx catch can, Id1300x, Alky Control

04-14-2013, 07:34 AM	#4
mercedestech Drives: 2010 2SS/RS IOM,2013 Mercedes ML350 Join Date: May 2010 Location: Akron Posts: 507	Pay very close attention to all of the pins that get swapped into the new connector for the lpe fuel pump module. After installing mine I kept losing the fuel pressure sensor input to the module. I cant remember the exact code it was giving me, but the problem ended up being one of the female pins was spread and not making good contact. I found it by taking a male pin and checking all of the wires that had anything to do with the code I was getting by making sure each one felt snug when inserting the male pin. A pin drag test if you will. I crimped a new female pin on the wire with the issue and have been good since. Hope that helps. I had to go to the dealer for the new pin as it was part of the cars original wiring harness, but they didn't even charge me for it. The have hundreds of different pins organized in boxes in the shop for just this type of repair. __________________ 2010 Camaro 2SS/RS Whipple 2.9L, Rotofab CAI and coil covers, XS Power LT's and full 3" exhaust, Vengeance kaotic cam package (trunion kit,dual springs,titanium retainers,hardened pushrods,c5r chain,ls2 tensioner, melling oil pump) Mgw shifter, 160 deg Tstat, prosport gauges, LPE dual pump, FIC 60lb injectors, level 5 DSS Axles 1994 Z28 MSD optispark, K&N CAI, Magnaflow y pipe..Cat..and cat back. 1998 wheels, custom tune(sold ) 1993 Base V6 sold to buy Z28 1994 Purple Pearl V6...sold 1979 Base Car with inline 250ci 6 cyl! My first car in 1989!

04-14-2013, 11:52 AM	#5
injector Drives: LS3 Join Date: Mar 2012 Location: Qatar Posts: 122	Thanks guys.. Dropped it today will check the wiring first.. Feels to me like a wiring issue..never had this issue before... Hopes nothing major.. __________________ Texas Speed & Performance Custom Built Forged 408 CID, PRC LS3 260CC,Fast Intake & NW 102 TB, Alky Methanol kit, ID850, LPE Dual pumps,,Melling HV oil Pump. D1SC 10PSI, Stage 2 Air Intake,Magnaflow Axle back, Mcleod clutch, Pedders XA coilovers and sway bars, HD bushings, Hurst shifter, ACS bumper and hood ports, DSS aluminum drive shaft, CSF radiator .

04-15-2013, 11:32 AM	#9
swiftkart Drives: 2010 SS/RS LS3 M6 Join Date: Apr 2011 Location: Kansas Posts: 693	Double check that you didn't hit the fuel sensor slightly when putting it in the tank, I did and that pulled the very thin light weight electrical metering arm awat from it's contact so it would touch at one point and not at another, I throw the same code and about pulled my hair chasing it along with wiring and then pulled the pump and saw it, put a new sensor problem solved