1998 Chevy Blazer Gas mileage

Tiny
AJVANDYKE
  • MEMBER
  • 1998 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
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
Thursday, October 1st, 2009 AT 3:33 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 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.
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Monday, October 19th, 2009 AT 10:28 AM

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