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Thread: Low gas milage, rough start.

  1. #31
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: Low gas milage, rough start.

    Jade, the gauges not coming on with the key is a common problem caused by a poor connection in the back of the gauge cluster. Short term fix is to pretend you are a pissed off guy and smack the dash with your hand, not fist. That usually does it. Not sure if I told you to do this, but if the O2 sensor hasn't been changed, like when that last tune up was supposed to have happened, putting one in is a good thing and may help smooth it out
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  2. #32
    Join Date
    Jan 2015
    Location
    College Station, TX
    Posts
    115

    Default Re: Low gas milage, rough start.

    Cant say Id be opposed to giving it a good smack at this point. Shouldnt even have to pretend on the pissed off part. Not sure if they put a new O2 sensor in with the tune up but I didn't see it on the receipt so most likely not. It just passed an inspection so I just wrote that off (probably not my best idea). This is probably a stupid question but is there any way to test the sensor to see if it's still good or do you just have to bite the bullet and hope a new one fixes it?

    Sent from my SAMSUNG-SM-G870A using Tapatalk

  3. #33
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: Low gas milage, rough start.

    Not a stupid question. Yes you can, but it takes equipment I don't have. My rule of thumb is change it every 50K. And while you are at it, the crank position sensor and cam position sensor every 100K. Those two will leave you stranded when they quit. Basically what happens is that the O2 sensor generates its own electrical current. Eventually it starts running out of electrons it can get rid of so it starts generating less current and causes the engine computer to assume the mixture is lean and so it squirts more fuel into the cylinders. Short story is that they wear out just like solar panels
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  4. #34
    Join Date
    Jan 2015
    Location
    College Station, TX
    Posts
    115

    Default Re: Low gas milage, rough start.

    That would make sense. I think I'm back at 20 mpg highway again but my exhaust does smell pretty rich. And I'd bet money that none of those 3 have been replaced in eons. The jeep is a reformed mommy mobile and I'm learning pretty quickly that she ran it hard, put it up wet, and decided maintenance was for suckers.

    Sent from my SAMSUNG-SM-G870A using Tapatalk

  5. #35
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: Low gas milage, rough start.

    That could be. Mommies like to feel acceleration too. 20 mpg is good though. Those of us with lifted Jeeps get less
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  6. #36
    Join Date
    Jan 2015
    Location
    College Station, TX
    Posts
    115

    Default Re: Low gas milage, rough start.

    And letting Reese's cups hang under the back seat until petrified apparently. But yeah, thought it would be a bit of a waste to lift a 2wd. Just trying to get it running decent before I sell it next summer. And keeping it running to get me to classes and work in the meantime.

    Sent from my SAMSUNG-SM-G870A using Tapatalk

  7. #37
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: Low gas milage, rough start.

    It will be a good rig for that. You might even decide to keep it. You could call a paleontologist in to see if there is any evolutionary value to old vs new cups
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  8. #38
    Join Date
    Jan 2015
    Location
    College Station, TX
    Posts
    115

    Default Re: Low gas milage, rough start.

    Ah, darn. Already partially removed the thing. Coulda been rich!

    Sent from my SAMSUNG-SM-G870A using Tapatalk

  9. #39
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: Low gas milage, rough start.

    Not to mention a whole new field of GMO vs non GMO peanuts
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  10. #40
    Join Date
    Jan 2015
    Location
    College Station, TX
    Posts
    115

    Default Re: Low gas milage, rough start.

    There's something genetically modified about that thing, that's for sure 😂

    Sent from my SAMSUNG-SM-G870A using Tapatalk

  11. #41
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: Low gas milage, rough start.

    I am sure. Or perhaps you can smuggle them into Egypt and sell them to a tourist saying they were just excavated from a pyramid
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  12. #42
    Join Date
    Jan 2015
    Location
    College Station, TX
    Posts
    115

    Default Re: Low gas milage, rough start.

    Or that guy from ancient aliens. I only have one so gotta make it count 😁

    Sent from my SAMSUNG-SM-G870A using Tapatalk

  13. #43
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: Low gas milage, rough start.

    That is right, chance favors the prepared mind. If it is alien, maybe it is paranormal
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  14. #44
    Join Date
    Jan 2015
    Location
    College Station, TX
    Posts
    115

    Default Re: Low gas milage, rough start.

    Bender the jeep and it's haunted petrified Reese's cup. That's a whole episode right there

    Sent from my SAMSUNG-SM-G870A using Tapatalk

  15. #45
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: Low gas milage, rough start.

    You could start your own blog with that right there
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

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