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1990 Volvo 240 Question: Just bought a 1990 240 DL sedan and I'm not impressed with the gas mileage.

 

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Zami, 2.3L 4 Cylinder, Waterport, NY, November 22, 2012, 16:48
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Have read it may be the o2 sensor. Does anyone know how much that might cost to have looked at? or any other suggestions?

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    your.mechanic November 23, 2012, 09:17
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     Master

    possibly $100 to hook up a scope to your o2 sensor and verify operation...or just buy and replace it for $150 or so.

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