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Bad Gas Mileage on new to me 850 T5 850 1997

posted by  trirod on  Thu Aug 30 08:44 CST 2007
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last visit: Sat Mar 21 11:18 CST 2009
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A few months ago I replaced my 89 240 wagon with a 97 850 T5 wagon. I was expecting to get a similar gas mileage with my 850 as I got with my 240, but it's actually a lot less. I used to get about 25 mpg in mixed city/highway driving on my 240, but I get a little under 20 mpg with my 850. Admittedly the 850 is an auto vs. a stick for the 240, but I am still disappointed with the mileage.

I have replaced the plugs, cap and rotor. There are no check engine lights. The engine gets up to temperature quickly and stays there so I think the t-stat is fine (although I will change that soon anyway).

I wondered if my O2 sensor might be going bad, but I think that would trigger a CEL?

Any thoughts on what else I could check?

Thanks
Rod






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New Bad Gas Mileage on new to me 850 T5 [850][1997]
posted by  trirod  on Thu Aug 30 08:44 CST 2007 >


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