2002 Chevrolet Blazer Logo
Posted on Jun 18, 2009
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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

  • Marvin
    Marvin May 11, 2010

    You did not answer my questions

  • Marvin
    Marvin 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

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

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  • 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.

  • Anonymous 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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