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Old 03-13-2009, 11:00 AM   #1
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Unhappy Terrible Gas Mileage. CIVICS

I have a 98 Civic and for the last year it's been getting awful gas mileage. I've had it for almost 7 years, up until about a year ago I was getting around 30 to 33 miles per gallon. Now I'm getting around 24pg. The oil has been changed every 3k. Any suggestions??
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Old 03-13-2009, 11:44 AM   #2
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Does it have any other symptoms?

Are any error lights lit?

Did you change anything before your mileage dropped? Tires, transmission fluid, tire pressure, traffic conditions, favorite gas station, new job with a different commute, driving style...there's loads of different kinds of things that can cause your mileage to drop.
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Old 03-13-2009, 12:01 PM   #3
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Tune up history? By the way welcome to the site! Now lets make that 24 a 44!!!!
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Old 03-13-2009, 12:37 PM   #4
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Oxygen sensor. It will not trip a code until it gets really bad.

regards
gary
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Old 03-13-2009, 01:48 PM   #5
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welcome fellow central floridian!

over the past year, if you recall, E10 was finally making it's way to florida.

but, for that much of a decrease, you certainly have other issues as well.
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Old 03-13-2009, 01:58 PM   #6
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I agree with R.I.D.E. The mileage will drop with little or no warning.

Also check for exhaust leaks and/or pinches. My brother once bottomed out his Accord and flattened his tailpipe. He noticed a slight drop in power, but nothing big. However, his fuel mileage dropped from around 28 mpg to about 15.
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Old 03-13-2009, 04:13 PM   #7
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Welcome from me as well.
Sorry but nothing to add to the suggestions above for the reason for the drop in FE.

Enjoy your stay.

Cheers , Pete.
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