crappy gas mileage

General discussion forum about the 240sx, and a great place to introduce yourself to the board!
Two40SX
Posts: 39
Joined: Mon Jul 29, 2002 12:12 pm

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i just had a cat put on with all new piping and a new muffler but my gas mileage only at about 17.7 mpg. that sucks. could it be the o2 sensor maybe? if so how much is that gonna run me??? any help is appreciated.


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Get240DiZzY
Posts: 993
Joined: Tue Aug 27, 2002 12:05 pm
Car: Rallying. My 240. Not at the same time though.
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Look at other threads before making your own. There is another gas mileage one around with all the answers.

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1dollar240
Posts: 646
Joined: Wed Jul 24, 2002 1:46 pm
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An O2 sensor should only be about 15-20 bucks for the one that you have to splice the wire. For one that just plugs in it costs a little more: about 35 .


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