Why am I getting 11.5 MPG on the interstate?

Discussion in '94-95 Talk' started by The Green GT, Apr 24, 2007.

  1. 94-302-vert New Member

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    Have you cleaned your MAF? With my CAI I have to clean the MAF every 6-8 k miles...
  2. legalize420 Active Member

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    373 gears here. i get between 260-280 before fill up and usually fit about 13 gallons in there. thats with 50/50 city/highway. if i did only highway driving im sure i could see over 300 on a tank.
  3. 1slow95 Founding Member

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    You can't get the correct speedo gear for 3.73's in a 94-95 with the stock t-5. With the 3.55 gear(white) you'll still be off by about 10%.

    Driving at 65-70mph I got 18mpg when I took a road trip last summer. :) I usually get 8-12 around town tho :(
  4. GreenStangGT Member

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    Not necessarily true. I went from stock 2.73's to 3.73's in the rear and, even with the most correct speedo gear, my speedometer is definitely off. I do second the idea of trying some injector cleaner though. I especially advise using SeaFoam twice, once through the gas tank and once through a vacuum line. I had good results with it and it couldn't hurt.
  5. Black95GTS Active Member

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    After 3.55s you need to:

    1 - Just deal with your stuff being silghtly high with a speedo gear change
    2 - Change out the transmission gear and speedo gear to make a different ratio
    3 - Use an electronic device such as a Speedcal

    There is no single gear to drop in and correct for rear screw changes after you get past 3.55s.

    Adam
  6. wytstang Advanced Member

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    Jack pot my #8 cylinder was not squirting properly, I pulled the plug and half was black and the other half was normal. The injector was squirting directly at the injector yet is was firing well enough not to miss and or hesitate. Pull the plugs and they will tell you whats happening. I ended buying a whole set of used injectors so if you need 1 or a few I have some.
  7. trav_19 New Member

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    i have never used a speedo calibration thing i just drive and keep up with traffic i checked it once so i have an idea how fast im going... but i also know my odometer is spinning faster too
  8. The Green GT No 13 year olds are safe around me.

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    I plan on checking mine with a GPS soon.
  9. gcomfx.com Founding Member

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    If his speedo was off.... mine shows I'm going faster than I am... wouldn't that make your mileage appear BETTER as you are racking up MORE miles on a tank of gas? You could actually be getting 6mpg. LOL Or do I have that backwards? :shrug:

    I would look for a leak. How's the rubber gasket on your tank? Show any signs of a liquid trail?
  10. The Green GT No 13 year olds are safe around me.

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    I have no leaks. I have never had any liquid drip from my car unless I was changing fluids.

    I do have an oil leak though. :( But it does not drip.
  11. final5-0 Mustang Master

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    When I saw this ................

    I instantly thought of Saturday Night Live ......... from years ago :D

    They had .............. Church Lady :banana:

    She would'a said :)

    Aren't You Special :rlaugh:

    Grady
  12. The Green GT No 13 year olds are safe around me.

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    Momma tells me that everyday. :)
  13. gcomfx.com Founding Member

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    You do realize gas won't always leave a puddle right? I've had mine leak on the fuel rail. It never hit the ground. And I had my filler tube gasket leak. It ran down my tail pipe. :eek:
  14. The Green GT No 13 year olds are safe around me.

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    Well I never smell gas, so Im not worried about a leak.

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