horrible fuel mileage!!! :confused: - Ford Powerstroke Diesel Forum
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post #1 of 21 Old 09-12-2009, 11:24 PM Thread Starter
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horrible fuel mileage!!! :confused:

i have a 1999.5 f250sd 194,000 miles. my truck ever sense i put the rebuilt turbo in and up pipe gaskets im getting 13.2 mpg empty no trailer. i dont have a heavy foot. and i dont let the rpm usually get above 2200 rpms. i recently have cleaned my airraid air filter and changed the fuel filter. nothing seems to help. i dont hear any boost leaks anywere and my boost gauge reads up to 25 psi what should i check im stumped.
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post #2 of 21 Old 09-12-2009, 11:42 PM
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if your not running a programer or a chip i dont think thats too far off.... maybe a little low. honestly the last thing i did to help mpg's was a new set of steer tires.

2002 f350 7.3 4x4 mbrp 4''turboback/foil delete/napa6637filtermod/autometers/ts 6 pos chip
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post #3 of 21 Old 09-12-2009, 11:47 PM Thread Starter
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i have a ts perfromace chip. and the guy i got it from said 75hp is economy mode that what i run in. and my tires are half tread and are 285/75/16
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post #4 of 21 Old 09-12-2009, 11:48 PM
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what were you getting b4? i havnet been able to get above 15mpg. plus half my driving is city.

2006 Ford F250 CCSB FX4 6.0

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post #5 of 21 Old 09-12-2009, 11:51 PM Thread Starter
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15-16 city 18-19 higway before my old turbo took a crap
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post #6 of 21 Old 09-12-2009, 11:59 PM
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what boost are you pushing? do you have gauges?

2006 Ford F250 CCSB FX4 6.0

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post #7 of 21 Old 09-13-2009, 12:02 AM Thread Starter
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im pushing 3-5 at 65-70mph and 60mph 1-2 psi and max pressure is about 25-28
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post #8 of 21 Old 09-13-2009, 12:10 AM
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got me buddy id expect more than that myself.

2002 f350 7.3 4x4 mbrp 4''turboback/foil delete/napa6637filtermod/autometers/ts 6 pos chip
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post #9 of 21 Old 09-13-2009, 12:11 AM Thread Starter
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more boost or more mileage
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post #10 of 21 Old 09-13-2009, 12:53 AM
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what was the reason for the rebuilt turbo? was there any parts that didnt get replaced or did you change the wheel on it?

2006 Ford F250 CCSB FX4 6.0

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1997 F350 CCLB 2WD 7.3
1999 F350 CCLB 4WD 7.3
2003 F350 CCLB FX4 6.0



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