I just got home from a 1410 mile trip. I drove home from Stamford, CT. It was a good trip, but encountered some problems on my way.
The first problem that I encountered was "check engine" light while I was sitting in the truck eating a sandwich. I do not have a tuner on my truck yet, and it was about 8p.m. so I really had no choice but to continue on. I filled up with fuel and noticed that my mpg had dropped from 20.7 down to little over 19.
I chose to take it easier, dropping my speed from 70 to 65. I filled again and my mileage dropped again to abut 15. At this point I am becoming concerned.
I drove for another 200 miles to see what the mileage would be again. Filled up with fuel and noticed no big change so I decided to contact a local dealership. I asked if they could check the diagnostic code..."yes, we would be happy to." LOL
I take it in, checking p0401 and p0404 is what it checked. The tech said that he would clear those, saying that they are EGR and it really had nothing to do with mileage. However, he did say that the fuel filter needed changed, evidently it was pulling only 6 inches of vacuum and should be pulling 9 inches.
Guess what the cost was? 135 bucks. Wow!! And I had just read several threads in here about that very thing. Though, stupid me, I kept thinking, "I just got this truck, it won't have any problems. I don't need to pack a fuel filter."
So, anyway, on I went. I got home safe and sound. I have been away from the house for a little while and am spending time playing with my little ones and their mom.
I filled up tonight because I was anxious to see what kinda mileage I would be getting with the new fuel filter installed. To my dismay, it is about 19. I figured it would be higher than that. I am kinda puzzled at the whole situation because when I first got the truck and put a few hundred on it, it checked in at 20.some-odd MPG.
I just looked at the pictures of the soot build up at This is why you block your EGR
This is first on the list for sure. It may not help with mpg, but just looking at the pics are evidence enough. BTW, I looked at my oil levels as well tonight. The oil looks like it has been sitting in the engine a while: plenty black and not very viscous.
Does anyone have any suggestions on mileage. Or am I dreaming. Shouldn't I be doing better on mileage?
__________________ 2006 Chevy 2500 HD LBZ RCLB 4x4 K&N CAI, Stanadyne Performance, Monroe Reflex (a less expensive version of the Rancho 9000), Mobil 1 Full-Syn 5w-40 (9-06-08) Window Tint and Deflectors
iPod blasting anything from Metallica and Led Zep to Jazz Rule #1: No Country/Western or Rap allowed Rule #2: No Smoking Cigarettes in My Truck
Hmm See 20 MPG that you got before and 19 MPG that you where getting when you got home are actually pretty close to the same. The difference in 1-2mpg could be you had the truck idling for 30minutes more than before!
The one possibilty I'd see is if you where traveling and got fuel at various locations you could have gotten bad fuel. Id let it got for a few, maybe 5 tanks of gas? Then get the fuel filter changed again.
__________________ Jason 2006 Silverado Shortbed Crew Cab LBZ Escalade handles, Line-x, Painted bumpers and towing mirrors, Tinted Front Windows & Tail lights 4 Kicker 10in Subs & Punch 250amp in 2 custom boxs. Autometer Ultralite II Pyro & EGT gauges with pillar pod MBRP Turbo Back stainless exhaust (Straight piped), AFE Stage II Intake, PPE Hot+2 285/75/16 Nitto Terra Grapplers on Gear Alloy wheels Lost Kitty Reward if found!! 1999 Ford F-550 Powerstroke Tow Truck-Wrecker **Jerr-Dan Bed, S&B Intake
Does anyone have any suggestions on mileage. Or am I dreaming. Shouldn't I be doing better on mileage?
Straight pipe it,check tire pressure,keep it under 2000 rpm when possible,and get that tuner,that and the exhaust are the 2 most imp mileage helps...
__________________ MINE2006 GMC 2500HD4x4 sb cc LBZ!Got a couple lil mods,more to follow
[color="Blue"]02 GMC 1/2 ton,2wd,5.3 power{Mama's ride}
87 SS Monte Carlo 77k[orig!]
78 Malibe [2dr.]350/350 WORK RIG:03 YukonXLHypertech tuned!!310k miles! The left lane is used to pass,so get over,or we'll run over ya asssss!!1996 Impala SS on the way!!!
that is kinda my thought as well. I really need to get some money in this thing (tuner and exhaust, etc.) before I start crying too much.
Thanks for the encouragement.
__________________ 2006 Chevy 2500 HD LBZ RCLB 4x4 K&N CAI, Stanadyne Performance, Monroe Reflex (a less expensive version of the Rancho 9000), Mobil 1 Full-Syn 5w-40 (9-06-08) Window Tint and Deflectors
iPod blasting anything from Metallica and Led Zep to Jazz Rule #1: No Country/Western or Rap allowed Rule #2: No Smoking Cigarettes in My Truck
__________________ MINE2006 GMC 2500HD4x4 sb cc LBZ!Got a couple lil mods,more to follow
[color="Blue"]02 GMC 1/2 ton,2wd,5.3 power{Mama's ride}
87 SS Monte Carlo 77k[orig!]
78 Malibe [2dr.]350/350 WORK RIG:03 YukonXLHypertech tuned!!310k miles! The left lane is used to pass,so get over,or we'll run over ya asssss!!1996 Impala SS on the way!!!
__________________ 2006 Chevy 2500 HD LBZ RCLB 4x4 K&N CAI, Stanadyne Performance, Monroe Reflex (a less expensive version of the Rancho 9000), Mobil 1 Full-Syn 5w-40 (9-06-08) Window Tint and Deflectors
iPod blasting anything from Metallica and Led Zep to Jazz Rule #1: No Country/Western or Rap allowed Rule #2: No Smoking Cigarettes in My Truck
19 is nothing to be ashamed of!!That mpg is not bad at all for a stocker,I bet once you get ya mods straight,you'll see an increase..
__________________ MINE2006 GMC 2500HD4x4 sb cc LBZ!Got a couple lil mods,more to follow
[color="Blue"]02 GMC 1/2 ton,2wd,5.3 power{Mama's ride}
87 SS Monte Carlo 77k[orig!]
78 Malibe [2dr.]350/350 WORK RIG:03 YukonXLHypertech tuned!!310k miles! The left lane is used to pass,so get over,or we'll run over ya asssss!!1996 Impala SS on the way!!!
Speaking of MPG, I just did my first trip with my new Banks Intercooler. Just with the intercooler, got an extra 100 km out of a tank. There expensive, but wont take long to pay for itself... Just a thought
__________________ Eric
2007 Chevy 2500HD CC/SB LBZ
Banks Ram Air Intake, Banks Dual Monster Exhaust with 4" MBRP cat delete pipe , Banks Intercooler,
Banks Ottomind6, Power PDA, 285 BFGoodrich M/T, HID Hi/Low/Fog
Auto Meter Tranny temp, pyro and boost on pillar pod.
Also, if you are using the on board computer (DIC) to see what your mileage is.....you might want to start hand calculating it just to see what it really is. Some people get lucky and it matches, but the majority of us get different results by hand calculating. Miles divided by gallons of gas = truth.
__________________ RIDE: 07 Chevy CC LBZ / 6 Speed LIFT: Ready Lift Leveling Kit STARTER: VIPER 2 Way w/ Turbo Timer ADD ONS: H1 Halo Projector headlights, Back up Camera, Dee Zee running boards, Chrome Billet Grill, ExTang Solid Fold Tonneau Cover, Line of Fire w/reverse, custom bug shield/vent shades, TomTom GPS TIRES/WHEELS: 265/75-16 Grabber AT2 Tires on 16x8 ATX series Teflon Coated Wheels EXHAUSTS: BANKS Monster Dual Exhaust, EGR blocked & CAT removed with MBRP replacment pipe. CAI: BANKS Ram Air PROGRAMMERS: BANKS 6 Gun PDA w/Speed Loader --STACKED-- with Quadzilla Stealth 2
yep, that is the way that I do it, my truck doesn't have that computer. Besides that, I wouldn't trust it if it did. I learned to do it the right way when i was a kid and have done it ever since.
__________________ 2006 Chevy 2500 HD LBZ RCLB 4x4 K&N CAI, Stanadyne Performance, Monroe Reflex (a less expensive version of the Rancho 9000), Mobil 1 Full-Syn 5w-40 (9-06-08) Window Tint and Deflectors
iPod blasting anything from Metallica and Led Zep to Jazz Rule #1: No Country/Western or Rap allowed Rule #2: No Smoking Cigarettes in My Truck
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Got a couple lil mods,more to follow
310k miles!
Linear Mode
