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1997 Saturn SC1 Question: Why would my Gas mileage be cut in half, Went from 400 miles on a tank of gas

 

Question

winsman, 1.9L 4 Cylinder SOHC, Selma, NC, January 22, 2012, 17:47
 Rookie

Changed out fuel filter, Oxygen sensor, Crankshaft position sensor, to no avail, gas milage is still below normal. What next? Also deaccelerates when climbing hills. And acts like it has no power.

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  • Answer #1

    January 22, 2012, 18:27
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     Master

    sounds like you have a clogged cat converter.

    Roy

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    winsman, January 22, 2012, 19:01
     Rookie

    But it's not getting hot.

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    mastertech6371, January 22, 2012, 19:15
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     Master

    does not have to get hot for the cat to be clogged. have a shop do a backpressure check and a snap throttle check to verify

    Roy

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