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Old 01-22-2003, 04:56 AM
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Red face Good gas millage?

I was on the turnpike yesterday going about 70-75 mph and driving for about 1 and a half hours strait and my little computer that does my gas milage said I got 19.3mpg on the turnpike. Is that good for my car? Also,I just realized that I have a O2 sensor and I have 150,000 miles on my car. Should I replace it sometime soon? Steve

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Old 01-22-2003, 05:39 AM
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what kind of car you have man, if it is a 5.o and you get 19.3 miles to the gallon, going 70-75, that is pretty good, my truck get 9 miles to the gallon going that fast!!!
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Old 01-22-2003, 05:46 AM
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88 Towncar. I have about a 17-19 gallon tank(estimated by the amount I put in gas) and I can get all highway miles out of about a little over 3/4 of a tank and go about 275-300 miles. Steve

What about the O2 sensor? I wouldn't want to do it because it might be rusted on and I don't want to break anything. About how much are they for an 88 Towncar?
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Old 01-22-2003, 06:02 AM
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as for the 02 sensor i have no clue on that one, if it is rusted on there try to find a way to get the rust of so you can take it off, "WD 40???"
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Old 01-22-2003, 06:23 AM
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My wife's Expedition w/ the big V-8 gets 21mpg on the freeway. My PT Cruiser get 19mpg. Go figure. Algore would throw my wife in prison if he had his way and give me an award for the cars we drive, yet her's is more fuel efficient than mine! Let 'em try! I'd rather die fighting for freedom than live under tyranny! Seems like I have heard something like that B4. Hmmm . . . .
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Old 01-22-2003, 09:14 AM
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Willy, two words.

Tinfoil Hat.

:p
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Old 01-22-2003, 10:50 AM
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My 86 T-bird with a 302 only gets 17-20 on the highway at 65MPH. I think your car is getting good fuel economy.
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Old 01-22-2003, 11:28 AM
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Dont let that little computer fool you. It dosnt actually calculate the amount of fuel it uses or knows how much you put in. It is programed by the factory with a set MPG ratio that calculates the MPG. The calculation is based on that MPG ratio engine speed and miles driven. The best way to get your real MPG to to keep up with your starting gallons and ending gallons at fill ups and the miles driven between the fill ups. I deal with this every day with my truck drivers they average about 6.5 miles per gallon. The best one we have gets about 8 miles to gallon!
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Old 01-22-2003, 06:12 PM
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My fuel gage is electronic. So I really can't get it just perfect. Steve
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Old 01-22-2003, 09:29 PM
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Damn i'm not sure whats good milage apparently my car got good milage on the highway... 150km on quarter of a tank 8 bucks canadian and it cost like 35 to fill it ... 30 when gas was cheap
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Old 01-22-2003, 09:54 PM
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You should change your 02 censor. And don't worry about it being rusted in. All the ones I have seen actually come with anti seize on them right when you buy them. But most important you need to know when to stop reifing on anything in order not to break it off. The general rule of thumb is 1/4 turn before breakoff. Just kidding. It shoukd be easy if not heat it up before you try to take it out if it doesn't go easy.
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Old 01-22-2003, 10:19 PM
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Yea... thats about right. Most of those got 21 - 23 at 65 mph. Does it have 1 or 2 oxygen sensors. If you dont know if the sensor is working, test it. If its a one wire sensor, disconnect the sensor wire w/ the eng warm. Put a digital voltmeter between the disconnected sensor end and ground. Leave harness end disconnected. Start eng and watch readout. If its working, it will vary between .1 and .9 volts. No need to replace. (This goes for all O2 sensors). If its a 3 wire sensor, check all three wires, one of them should give a voltage reading just like the single wire reading. The other 2 wires are for the O2 heater circuit. With the O2 disconnected for the test, the heater circuit will get no reading.
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Old 01-23-2003, 07:01 AM
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Went on a run with a bunch of new Corvettes and average 70 to 75 MPH -- the Autos were getting around 27 to 29 MPG and the six speeds were getting 31 to 33 MPG. We had one Z06 405 HP and it was getting between 26 and 27 MPG. My wife Grand Prix GTP gets about 21 or 22 MPG and that's a 6 cycl and my SUV is around 15 to 17 MPG.
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Old 01-23-2003, 07:46 AM
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[quote]Originally posted by 4 Jaw Chuck:
<strong>Willy, two words.

Tinfoil Hat.

:p </strong><hr></blockquote>

4Jaw; Don't you know that tin foil hats are only good for fending off black helicopters and space alien invasions? No, what I need is a ball cap with signatures from my two pals Smith and Wesson!!!!!!
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Old 01-23-2003, 08:33 AM
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Wink

I have a 61 Chevy pickup that seems like it gets 5MPG. I guess she's a little thirsty.
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