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Help with poor gas mileage

  #1  
Old 08-30-2013, 12:34 PM
Junior Member
Thread Starter
Join Date: Aug 2013
Posts: 1
Angry Help with poor gas mileage

Hi All,

I am thrilled to join a group of intelligent car owners. I hope to measure up. I have a 2004 Volvo S-80 Turbo with 120K miles. I just had the plugs changed and am still getting very poor mileage (13 mpg in the city)
The car runs great and rides like a dream but I can't live with such poor mileage. I use 87 gas and always have. Any suggestions?
Thanks,

Bruce G
 
  #2  
Old 08-30-2013, 07:01 PM
Senior Member
Join Date: Sep 2012
Location: Kapiti Coast. Wellington. NZ
Posts: 645
Default

Tried getting your fault codes read with an OBD11 reader?
May show a related cause.
Might be an o2 sensor needs replacing.
Try running her on a tank or 2 of 91.
Computer may be telling her to run a little richer using only 87.
 
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