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getting horrible MPG

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Old Dec 7, 2010 | 02:31 PM
  #1  
rtralabama's Avatar
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From: Carlisle, PA
Year: 2000
Model: Cherokee
Engine: Inline 6
Default getting horrible MPG

so i went through a little over a 1/4 tank of gas in 45 miles! i probably gonna get like 180 for a full tank! i have a 4" lift on. 32s. thats about it. idk why MPG is around 10
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Old Dec 7, 2010 | 03:18 PM
  #2  
xjmuddigger's Avatar
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From: DIRTY SOUTH
Year: 1991
Model: Cherokee
Engine: 4.0 ho
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ur O2 sensors may be bad,that can hurt mpg,or they might just need to be clean and a good air filter will help as well,u can use lucas injector cleaner,that will help unless u already use it
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Old Dec 7, 2010 | 03:23 PM
  #3  
TrekkerJmm's Avatar
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From: N.J. Shore Area
Year: 1994
Model: Cherokee
Engine: l6 HO
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Originally Posted by xjmuddigger
ur O2 sensors may be bad,that can hurt mpg,or they might just need to be clean and a good air filter will help as well,u can use lucas injector cleaner,that will help unless u already use it
X2 on the O2 (before catalytic converter) sensor. I'm getting around 10mpg and I know mine is factory from 94. I asked for it for X-mas from my daughter its about $45-55 for it...Tj
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Old Dec 7, 2010 | 03:47 PM
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From: Forest, VA
Year: 1999
Model: Cherokee
Engine: 4.0 I6
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did u drive in the city or highway? how fresh is your tuneup? what gears are you running? how heavy is your right foot? what kind of maintenance have you done recently? how many miles on the motor? auto or manual? have you adjusted your drum shoes?
btw, when the temperature drops to freezing, the pressure in the gas tank drops and the gauge reads different. and also, the colder the air, the more gas the engine sucks.

Last edited by Tural; Dec 7, 2010 at 04:01 PM.
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Old Dec 7, 2010 | 05:13 PM
  #5  
rtralabama's Avatar
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From: Carlisle, PA
Year: 2000
Model: Cherokee
Engine: Inline 6
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Originally Posted by Tural
did u drive in the city or highway? how fresh is your tuneup? what gears are you running? how heavy is your right foot? what kind of maintenance have you done recently? how many miles on the motor? auto or manual? have you adjusted your drum shoes?
btw, when the temperature drops to freezing, the pressure in the gas tank drops and the gauge reads different. and also, the colder the air, the more gas the engine sucks.
mainly city. idk how fresh the tune up is i havent taken it to a shop since i got it. 3.55. i try not to go above 2000 rpm when accelerating. changed oil 500 miles ago, new sparkplugs. 67,000. auto. havent adj drum shoes.
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