High fuel consumption

1996 JEEP GRAND CHEROKEE
162,972 MILES • 4.0L • 6 CYL • 4WD • AUTOMATIC
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SRAMAN
  • MEMBER
  • 13 POSTS
Since I got my vehicle at the beginning of the year. I noticed it used up quite a lot of gas. I figured straight six, four wheel drive it might be normal. But then fuel consumption has gotten worse. I have also noticed lately it takes a lot of power to accelerate. Now my gas gauge is not moving from empty.
Nov 29, 2017 at 12:34 PM
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MHPAUTOS
  • ✓Experienced Mechanic
  • 31,937 POSTS
Check general tune. check plug gaps, ignition leads, air and fuel filters, fuel pressure and scan for codes. get a live data read and check O2 sensor operation. failed o2 sensors will default to full rich and this is a fairly common problem.
Nov 29, 2017 at 1:46 PM
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