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Diesel Fuel Economy and chips

363 messages,  Last post on Aug 15, 2008 at 6:14 PM

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What is this discussion about? Ford F-250 Super Duty, Chevrolet Silverado 2500HD, Dodge Ram Pickup 2500, Ford F-350 Super Duty, Chevrolet Silverado 3500, Dodge Ram Pickup 3500, GMC Sierra 2500HD, GMC Sierra 3500, Fuel System, Performance Mods, Fuel System, Diesel, Fuel Efficiency (MPG), Truck

#135 of 363 The Importance of Fuel Lift-Pump Supply Pressure by heathdiesel Mar 01, 2006 (11:33 am)
The light-duty diesel trucks by GM all feature a lift pump designed to deliver fuel from the fuel tank to the injection system. Their importance to the overall operation of the engine cannot be overstated. Without proper lift pump pressure and delivery flow, the injection system in these trucks will not be able to function properly.   Testing lift pump pressure is a relatively easy task and one, which should be done periodically to assure that the lift pump is healthy.   Heath Diesel produces fuel pressure test gauge kits for the 6.5 diesel and these are listed below.   GM 6.5 Diesel The GM 6.5 turbo-diesel engine found in the ’92-’00 truck, Suburban and step van is supplied by a frame-rail mounted electric lift pump. This pump is powered by a relay when the engine’s starter in engaged and by an oil pressure switch while the engine is running. It is designed to supply the fuel injection pump at a pressure of approximately 7 psi at idle. The more important fuel supply pressure reading, though, is that measured while the vehicle is being driven.   The Heath Diesel Power fuel pressure test gauge kit for these 6.5 vehicles is connected to the fuel filter drain cock which is located near the thermostat housing at the front of the engine. The drain cock features an outlet nipple onto which a drain tube is installed. The HDP Fuel Pressure Test Gauge (Part #HDP1456), features a specially sized hose, which is slipped onto the nipple of the drain cock after the drain hose is removed.   The HDP test gauge is taped onto the exterior surface of the windshield for viewing while the vehicle. While driving, fuel pressure should not go below 2 psi and should, more ideally, be in the range of 2.5-3 psi.   Heath Diesel Power supplies a Heavy-Duty Version of the Factory Electric Lift Pump (Part #HDP1300). Heath Diesel Power also supplies the relay and oil pressure switches used in these vehicles here.   Feel free to contact Heath Diesel Power with any questions you may have regarding issues you are experiencing with your vehicle. We are always happy to help.   - Bill Heath
#136 of 363 6.0 powerstroke warrenty claims vs. chips? by mphines Mar 01, 2006 (1:39 pm)
whats the normal process w/ a chip{d} truck before service dept. visits. do you remove programming and what if truck is disabled how has ford been w/warranty coverage?? Replies to this message: imafordfan (Mar 02, 2006 7:58 pm)
#137 of 363 Re: 6.0 powerstroke warrenty claims vs. chips? [mphines] by imafordfan Mar 02, 2006 (7:58 pm)
Replying to: mphines (Mar 01, 2006 1:39 pm) My local dealership rejected a blown engine under warranty and said they handed the guy a bill for $15,000+++.   They said the chip caused the engine to blow, and Ford will not honor the warranty.   Ford's current computer isn't smart enough to know if/when a chip was installed, once it's been removed. The tech told me that Ford is changing their software to recognize and record a change to the program.   What's really funny, is that the dealership sells "Chips and Programmers" in their parts department!!!   TJ
#138 of 363 2004 duramax 2500 by red454 Mar 03, 2006 (6:17 pm)
OK So lets have it. End all be all best chip for my truck. Please
#140 of 363 .... by red454 Mar 05, 2006 (4:31 pm)
Bueller.....Bueller.........bueller......
#141 of 363 Re: Diesel Fuel Economy and chips [pickupwbb] by victorydave Mar 08, 2006 (1:08 am)
Replying to: pickupwbb (Mar 30, 2005 12:27 pm) Be very carefull with 6.0 litre diesel chips > You will void your warranty and yes ford can find it! The engine is so close to max as delivered you may pop it! I know some will write and say "I have no Problems with mine" don't buy it! If ya have'ta put a air cleaner kit and a cat back exhaust system NO CHIP! Warranty is still void but it will run somewhat better. Oh Yeah! Keep it under 2000 RPM's (around 1800) will reward you with the best Fuel Economy. When the Turbo kicks in it drinks like GW Bush.
#142 of 363 MPG 2006 Silverado 4X4 HD CC DuraMax Bullydog by frankoduramax Mar 12, 2006 (7:38 pm)
I just installed a Bully dog chip, economy/tow setting and a aFe high flow air filter. I also have 265-75 16 tires, and the chip allowed me to adjust the size, which corrects MPG, speed , etc.. I am getting MIXED 16.5MPG, 22MPG 60MPH on the freeway. The 16.5 is a 3 tank average. The truck runs HARD. I do tow, but only about 4000 - 5000lbs TOTAL. Love the truck, no problems, and the install of the bullydog was EZ, but read the directions THROUGLY. Going to add a 4 inch SS Muffler next and see how that goes. FYI, FrankoDuraMAx
#143 of 363 MPG 2005 F250 4x4 cc by alcowgirl Mar 27, 2006 (10:24 pm)
I'm looking to purchase a 2005 F-250 to use for everyday driving and pulling a 3 horse trailer. This truck has a AFE air filter, a modified exhaust, and Ford manual locking hubs. What mpg might I anticipate? Also, please explain the locking hubs advantage and usage. Replies to this message: bullrider (Mar 29, 2006 3:07 pm)
#144 of 363 Re: MPG 2005 F250 4x4 cc [alcowgirl] by bullrider Mar 29, 2006 (3:07 pm)
Replying to: alcowgirl (Mar 27, 2006 10:24 pm) hey there alcowgirl,I don't know if you have had any luck but what size of engine do you have first. also it is hard to say what your mileage would be due to the modified exhaust. you would have to check fuel mileage with a fuel fill on high way and fuel fill in town. then you'll get a est, on what it is. then when you pull your trailer it will be less gas mileage too. for your 4X4 do you have shifter in the vehicle or button to activate 4X4? DO NOT DRIVE 4x4 on dry pavement it will wear out your bearings. if you read your manual it will tell you everything you need to know about use of 4X4.good luck.I HAVE A 2000 F250 7.3L AND I pull a 4 horse trailer like its not even there.

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