I have a 2005 Ford Taurus, after having my emissions testing done, the car sounds rough running and my gas gauge dropped drastically from 71 to 48 miles per gallon until empty within driving 22 miles. Averaging 14.3 gallons right now. Any suggestions?

Asked by Jan 21, 2014 at 10:56 AM

Question type: Maintenance & Repair

Had emissions testing on Friday, car sounds like it isn't running on full cylinders. It runs, drives fine, I don't see any fuel loss, but I'm averaging 14 miles per gallon, started at 71 and am at 43 miles until E after driving 22 miles.

1 Answer


Might be a misfire or vacuum leak. Might be coincidence, but maybe the emissions station removed or didn't connect a hose or wiring harness. Is your CEL on?

Your Answer

Add photo

Related Questions

  • I get 9 miles per gallon on my 1990 V6 4Runner. 5 answers

    I get 9 miles per gallon on my 1990 V6 4Runner, I have had it inspected several times and no one can find the poblem. This truck is great throughout and runs perfect with this one expection. Does anyo...

    1990 Toyota 4Runner


    Maintenance & Repair

  • Increase Miles per gallon of gas 8 answers

    What is the BEST PRODUCT to put in gas tank to improve milage and performance? How many bottles? Brand and type? How often and how full should gas tank be? Chev Aveo 2010. Help

    2010 Chevrolet Aveo LT


    Maintenance & Repair

  • .Ford Taurus Charging System 10 answers

    I have a 2005 Ford Taurus. The check charging system light keeps coming on but all electrical items work fine, lights, blower, etc. I took it to Advance Auto Parts and they checked it out with a hi...

    2005 Ford Taurus SE


    Maintenance & Repair


    About a month ago my 1998 Mercury Grand Marquis started running rough after I pumped regular gas at a Chevron Station. As the car has 67,000 miles I took it to Sears Auto Center to have the spark plug...

    1998 Mercury Grand Marquis 4 Dr GS Sedan


    Maintenance & Repair

  • miles per gallon? 8 answers

    2008 Ford F-350 Super Duty Lariat Super Cab LB




Search Maintenance & Repair Questions

Maintenance & Repair Experts

#1 Tom Demyan
Tom Demyan
Reputation 162,630
#2 FordNut
Reputation 108,940
#3 dandyoun
Reputation 89,230
View All