1998 Chevy Blazer Gas mileage

150,000 MILES • 6 CYL • 4WD • AUTOMATIC
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AJVANDYKE
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  • 36 POSTS
I keep trying to get better gas mileage out of my stock 98 chevy s-10 blazer but I don't seem to be getting anywhere with it. It has a re-man transmission in it, tune up has been done with new cap, rotor, plugs, wires, PCV valve, air filter, fuel filter and have ran 3 bottles of lucas fuel injection cleaner every other fuel tank. Oil has been changed to Valvoline synthetic and all other fluid levels and tire pressures are at proper levels. And I cleaned the MAF sensor w/MAF sensor cleaner. Doesn't seem to have any sort of vacuum leaks. The engine vacuum measures in steady at 16 in hg @ engine idle, 21 in hg @ sharp increase in RPMs and below 5 in hg @ sharp decrease in RPMs. No DTCs in computer. Having said all of the that I can't get any more then 14 mpg on the highway and city mileage is horrible. Any suggestions or solutions? Any help would be great
Oct 1, 2009 at 8:33 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
It sounds like you have done all the standard things. The only other things I would check is to make sure the catylatic converter isn't plugging, and the O2 sensors are working correctly.
Oct 19, 2009 at 3:28 AM
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