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11-27-2012, 02:52 PM
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#1 (permalink) |
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Diesel Technician
Join Date: Mar 2010
Location: Morenci, MI
Posts: 290
iTrader Score: 0 reviews
Michigan Oil Burners Member |
De-fueled yesterday???
My 2005 LLY de-fueled on me the other morning twice. I currently have a bad stepper motor on the Tach so it can read 2x-3x actual RPM's at times. Would the High RPM on the Tach cause the truck to de-fuel?
Story: OK, I was running about an hour late to make it to the woods for opening day of gun season in Ohio. (slept through my alarm) Got 10 miles from the house and realized that in my hunting gear, that I have been using for bow hunting, I did not have my hunter orange vest. The first time it did it was when I was accelerating around a corner and got on her a little hard. She stuttered, I left off the gass and got back into it and she took off. Then I was running around 80 and accelerated to pass someone and it de-fueled again. Let off the accelerator and she picked right back up and took off. The CEL came on but went out later in the day, I have not had the chance to pull a code yet, will do that tomorrow. (currently wife has truck as I'm working on my girls car this evening)
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2005 2500HD CCSB LTZ 4x4  Diablo Sport Predator (80 HP); A.R.E fiberglass tonneau; 265/75/16 Hankook Dynapro ATM; Stock 16" AL Rims Powder Coated Black; Stock Bumpers Powder Coated Black; Black Tie; Pump Rub Upgrade (Merchant Auto); UniGoose Goose Neck Hitch; LBZ MP & Custom Intake Tube; EGR Blocked (No finger stick FE9); PCV Re-route; Parrot CK3100 Bluetooth; 4-HI Headlight Mod; Nictane filter adapter, New Style Tow Mirrors, Recon NNBS Smoked Cab Lights. Cat GONE Front Pipe - w/ stock exhaust |
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11-27-2012, 04:16 PM
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#3 (permalink) |
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Diesel Master
Join Date: Jul 2009
Location: Riverside, CA
Posts: 1,724
iTrader Score: 1 reviews
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It seems the first step is to change the fuel filter. I had a similar problem with only 500 miles on the filter. Replaced the filter and problem was solved. When I inspected the filter if was full of a very thick fuel. I must have got a bad load of fuel....never had a problem since....
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2005 HD2500 Silverado 2WD EC LB (FE9 - Federal Emissions) 85K miles Goodyear Wranglers 265/70R/17, LBZ mouthpiece upgrade, BD Exhaust, MBRP DP, Banks Ram-Air with SuperScoop ,4" SS Corsa Exhaust System w/gutted kitty, Amsoil Dual Oil Bypass Filtration, Aux Radiator (Engineer 837) installed, Allison extra capacity Tranny pan, MagHytec Rear Diff Cover, Synthetic Fluids ...Mike L tranny cooler) 2008 Towing Mirrors with Leveling MOD, PCV reroute, Fumoto Valve, Mad Jacks fuel fiter access door. Running 2% BioDiesel with Optilube XPD,TTS dual lift pumps with Nictane Aux Fuel Filtration installed. Firestone Air Bags, 5 tunes from Nick, controlled by my Edge/Insight And the best part of all, no payments and title in hand  WWW.DMAXSTORE.COM Member #5 of the OIL is OIL association. |
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11-27-2012, 04:57 PM
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#4 (permalink) |
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Diesel Technician
Join Date: Mar 2010
Location: Morenci, MI
Posts: 290
iTrader Score: 0 reviews
Michigan Oil Burners Member |
I'm leaning towards the filter issue also. Its due to be changed this weekend when I do my oil.
Never had it happen before so it freaked me out a little.
__________________
2005 2500HD CCSB LTZ 4x4 Diablo Sport Predator (80 HP); A.R.E fiberglass tonneau; 265/75/16 Hankook Dynapro ATM; Stock 16" AL Rims Powder Coated Black; Stock Bumpers Powder Coated Black; Black Tie; Pump Rub Upgrade (Merchant Auto); UniGoose Goose Neck Hitch; LBZ MP & Custom Intake Tube; EGR Blocked (No finger stick FE9); PCV Re-route; Parrot CK3100 Bluetooth; 4-HI Headlight Mod; Nictane filter adapter, New Style Tow Mirrors, Recon NNBS Smoked Cab Lights. Cat GONE Front Pipe - w/ stock exhaust |
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11-29-2012, 01:37 PM
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#6 (permalink) |
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Diesel Technician
Join Date: Mar 2010
Location: Morenci, MI
Posts: 290
iTrader Score: 0 reviews
Michigan Oil Burners Member |
Pulled the code it was a P0700?
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2005 2500HD CCSB LTZ 4x4 Diablo Sport Predator (80 HP); A.R.E fiberglass tonneau; 265/75/16 Hankook Dynapro ATM; Stock 16" AL Rims Powder Coated Black; Stock Bumpers Powder Coated Black; Black Tie; Pump Rub Upgrade (Merchant Auto); UniGoose Goose Neck Hitch; LBZ MP & Custom Intake Tube; EGR Blocked (No finger stick FE9); PCV Re-route; Parrot CK3100 Bluetooth; 4-HI Headlight Mod; Nictane filter adapter, New Style Tow Mirrors, Recon NNBS Smoked Cab Lights. Cat GONE Front Pipe - w/ stock exhaust |
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11-29-2012, 01:47 PM
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#7 (permalink) | |
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Diesel Laureate
Join Date: Feb 2005
Location: Monroeville, PA USA
Posts: 11,907
iTrader Score: 0 reviews
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The output of the tachometer (ie...needle position) has no feedback to the PCM. In other words, your failed stepper motor in the tachometer will NOT result in any codes or faults to the PCM.
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11-29-2012, 03:50 PM
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#8 (permalink) |
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Diesel Specialist
Join Date: Jun 2008
Location: Southern Arizona
Posts: 859
iTrader Score: 0 reviews
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You need a code reader than can see the transmission codes that set the P0700. P0700 tells you the transmission has stored codes.
When you get them post in the Allison forum.
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Check Six, Bud Member #28 of the OiO association. "Creeps and idiots cannot conceal themselves for long on a fishing trip." John Gierach '05 2WD YF5/NC8 2500 LLY/Allison LS Crew Cab Long Bed: OBDLink ScanXL w/GM PIDs, EGT/Boost Gauges, PCV, EGR, Finger's Stick, Radiator Water Mister, LBZ Mouth Piece + Fram Air Hog + Tx CAI, 4" Exhaust, 4300K 35W HID Low Beams + Auto Headlight Delay, GM Frame Beaming Mounts, Aux 55W Backup Lights, Taurus Fans, Earl's Trans Cooler///Repair Work -- #2 #7 harness kit, FICM, Wiiring harness bracket insulation, rear axle hub seals, new ISS/Green Bearing, Shocks, pitman/idler arms, Water Pump, Serpentine Belt/Idler Pully Bearings, Injectors #1, #5///150K Miles |
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