Question about 2002 Chevrolet Blazer

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Poor gas mileage 2000 S10 4.3L 4WD

2000 S10 4WD 4.3L 79000 miles. I have noticed a big decrease in gas mileage. The check engine light is not coming on. Still have power and runs good no missing, spitting or sputtering.

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  • ktsulli Jun 18, 2009

    Changed plugs/wires last around Christams 07

    Changed fuel filter in Janurary 09; changed oil, oil filter; air filter; pcv valve in April 09

    Tire pressure good all tires were 2-3 psi low

    Use 87 rated gas

    drive normal speeds 5-6 mph over

  • yadayada
    yadayada May 11, 2010

    You did not answer my questions

  • yadayada
    yadayada May 11, 2010

    what engine? 4 wheel drive? load carried? are tire at max pressure? what speeds do u average? using recommended grade of fuel?

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I disagree with changing the MAF sensor. I had the same problem for about 4 years until today on my 2000 s10 4.3 4wd 125K. It runs like new, and all i did was paid 6 bucks for a can of mass air flow sensor cleaner from auto zone. Try this!! it was awesome the results

Posted on Jun 24, 2010

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Thats the mass air flow meter.Should get changed at 60.000 miles. Also change the air filter.

Posted on Jun 18, 2009

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Change fuel filter, air filter, tire pressure. new plugs & wires, or run K&N air filter system.

Posted on Jun 18, 2009

  • Nate Stansfield
    Nate Stansfield Jun 19, 2009

    You can always run some sort of cold air intake and plug off your egr. or use higher grade fuel, change plugs and wires,

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