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Engine missing badly and poor fuel efficiency

(1999 Saturn SL2)
in Fresno, CA on January 23, 2011
engine has been tuned up and transmisssion rebuilt but after all this work it is still missing badly and I have had poor fuel efficiency for some time 20.9 mpg city,
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Popular Answer
on January 23, 2011
You really need to have a test done to see what is going wrong. Also - not certain what was done for your "tune up". Sounds like something still requires attention in that area.

As far as fuel economy -- you have to of course address other known issues before looking there. Hopefully your needed repairs will solve your economy issue as well.
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