2002 Isuzu Rodeo Question Major MPG Drop

Tiny
MWSSCOT1
  • MEMBER
  • 2002 ISUZU RODEO
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 121,000 MILES
I recently changed my spark plugs & Connectors. I also changed my O2 sensor. My fuel milage has dropped to 12 mpg. New I used to get 20 mpg. Is there any suggestions as to how to get better mpg's? Check Engine Light was on, but now has been off for a couple of weeks.
Wednesday, August 19th, 2009 AT 2:05 PM

1 Reply

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
I am assuming you are talking about highway mileage? That vehicle was rated at 15 city, 19 highway. Always start with tire pressure, low tires are a major cause of poor mileage. Since it has been tuned up, the engine should be running smoothly, so it may not be the problem. Has any other work been done to it?
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Thursday, August 20th, 2009 AT 7:42 AM

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