david m
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• Laredo, TX, USA |
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• Registered on 2/5/2005 |
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• 31 posts |
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 Posted:10/3/2005 21:52 |
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I posted a thread, MPG?, dated 9/11/05, asking others about their mpg. Thanks for all the responses. As you may already know, I experienced a significant increase in fuel consumption. I am currently experiencing 11.5 mpg in town (hand calculated). I used to get about 15 in the city. Has anyone had this experience? If so, what could it be? The only thing done at the dealership was a CPS replacement. I have not experienced a power loss. I changed the fuel filter, air filter, and even cleaned the Exhaust Back Pressure tube with a some carb cleaner.
When the dealer changed the CPS, the tech ran a diagnostic test of the injectors, crankcase pressure, etc. and all was normal. |
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CHPMustang
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• Plano, TX, USA |
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• Registered on 7/24/2002 |
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• 1,800 posts |
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 Posted:10/4/2005 10:47 |
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Could be a poorer fuel quality possibly??
You normally run your tank to empty before you fill up?
Have you performed any in-tank or pre-pump upgrades?
Bill
Bill
2002 Excursion XLT-P 4x4 7.3L Powerstroke Diesel
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david m
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• Laredo, TX, USA |
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• Registered on 2/5/2005 |
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• 31 posts |
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Posted:10/4/2005 13:02 |
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I usually fill the tank when it reaches the 1/4 tank mark. I have not performed any in-tank or pre-pump upgrades. My father gets better mileage from his Suburban.
Since it's under warranty, I'll try the dealership and let you know if they find anything. And if I keep getting this mileage, I may just have to sell this vehicle.
Thanks, |
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david m
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• Laredo, TX, USA |
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• Registered on 2/5/2005 |
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• 31 posts |
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Posted:10/4/2005 13:06 |
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I almost forgot to mention that I have been using same fuel station for 1.5 years. |
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CHPMustang
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• Plano, TX, USA |
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• Registered on 7/24/2002 |
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• 1,800 posts |
• 1
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Posted:10/4/2005 15:21 |
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Our stock fuel systems are subject to alot of air molecule ingestion from the fuel sloshing in the tank to air leaks in the fittings leading up to the fuelpump.
Air making it to the injectors will kill your mileage and reduce the life of the engine overall.
Dealer will most likely say change your fuel filter and your engine is running within spec to get you outta there 
Bill
2002 Excursion XLT-P 4x4 7.3L Powerstroke Diesel
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Douglas Dircks
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• New Richland, MN, USA |
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• Registered on 11/13/2003 |
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• 118 posts |
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Posted:10/16/2005 22:59 |
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Kind of getting sick of paying up to 91 cents per gallon more than 87 octane gasoline for lousy diesel fuel. 203K miles on 99 F250 work truck and up until the last few months was getting around 15-16 mpg and I'm now seeing 12-13 mpg. Thinking it's bad quality diesel fuel!
00 Excursion Limited 4x4 PSD 265/75/16 Ravo's Centerline rims Python 871XP
99 F250 x-cab short bed XLT 4x4 PSD 295/75/16 American Racing rims Viper 550 ESP stainless steel MAAP nerf bars Putco four piece grill inserts bumper poles and mud flaps air bags triple pillar pod Autometer Ultra Light fiberglass tannue cover and topper programmed pcm pulling 22 psi
99 F350 crew cab long bed drw Lariat 4x4 PSD 255/85/16 Python 871XP AIS fold down fifth wheel ball |
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CHPMustang
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• Plano, TX, USA |
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• Registered on 7/24/2002 |
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• 1,800 posts |
• 1
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Posted:10/17/2005 09:41 |
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| Quote: | | Kind of getting sick of paying up to 91 cents per gallon more than 87 octane gasoline for lousy diesel fuel. 203K miles on 99 F250 work truck and up until the last few months was getting around 15-16 mpg and I'm now seeing 12-13 mpg. Thinking it's bad quality diesel fuel! |
Alot of owners have been reporting their mileage going to junk,I'll have to agree with lesser quality fuels for sure.
Bill
2002 Excursion XLT-P 4x4 7.3L Powerstroke Diesel
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E. Long
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• Subscriber since 1/1/2001 |
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• Atlanta, GA, USA |
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• Registered on 1/23/2001 |
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• 2,229 posts |
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Posted:10/17/2005 11:26 |
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| Quote: | | Quote: | | Kind of getting sick of paying up to 91 cents per gallon more than 87 octane gasoline for lousy diesel fuel. 203K miles on 99 F250 work truck and up until the last few months was getting around 15-16 mpg and I'm now seeing 12-13 mpg. Thinking it's bad quality diesel fuel! |
Alot of owners have been reporting their mileage going to junk,I'll have to agree with lesser quality fuels for sure. |
I think I'm lucking out. I must be the only one with mileage that's improving!  I figured since I was paying more for diesel, it MUST be better quality! 
-Eric
'67 Galaxie 500 - 390 FE, .030" over, FE to AOD adapter, disc brake conversion. The Daily Driver.
'00 Excursion - 7.3L PSD, LANDYOT Gen-II Radius Rods, Factory Tech Valve Body, 200K+ miles and going |
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CHPMustang
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• Plano, TX, USA |
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• Registered on 7/24/2002 |
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• 1,800 posts |
• 1
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Posted:10/17/2005 12:18 |
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| Quote: | | Quote: | | Quote: | | Kind of getting sick of paying up to 91 cents per gallon more than 87 octane gasoline for lousy diesel fuel. 203K miles on 99 F250 work truck and up until the last few months was getting around 15-16 mpg and I'm now seeing 12-13 mpg. Thinking it's bad quality diesel fuel! |
Alot of owners have been reporting their mileage going to junk,I'll have to agree with lesser quality fuels for sure. |
I think I'm lucking out. I must be the only one with mileage that's improving! I figured since I was paying more for diesel, it MUST be better quality! |
No you're slowing down Eric 
Bill
2002 Excursion XLT-P 4x4 7.3L Powerstroke Diesel
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Tantrum
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• Bergen County, NJ, USA |
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• Registered on 7/26/2005 |
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• 52 posts |
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Posted:10/24/2005 23:43 |
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Im suspecting mine is droppping with the last two tanks of fuel I put in. My trip meter has dropped which I didnt pay much attention to because I know its not very accurate, however I never reset it, so it should be consistant, albeit consistantly wrong but consistant.
Ill have to go through my Wright Express bills and see whats going on.
BTW I run my tank to empty and then fill it up. I cant see leaving a 1/4 tank is going to make any difference.
2005 PSD Limited 4x4 |
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