2005-2009 Mustang Information on The S197 {Gen1}

Tank size

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Old 10/24/05, 12:02 AM
  #21  
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1999-2004 was 15.7 gallons, V6, GT or Cobra.
2005-2006 is 16.0 gallons, V6 or GT

Not sure what it was before then.

As for the gas light or check gauges light, Ford typically sets this at a point that is equivalent to about 50-55 miles of fuel, or 1 hour of "normal driving" depending on the vehicle. In my V8 Explorer that gets about 15 MPG, the light comes on when there is about 4 gallons left. In my 2000 Mustang GT that got 19-20 MPG, it came on when there was around 2-2.5 gallons left.
Old 10/24/05, 09:12 AM
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Originally posted by clockworks@October 24, 2005, 1:04 AM
Ok, get this. I reset all my info center stuff everytime I get gas. One time I was looking at it and it said 1.0 gallon's used, 16.4 miles on the trip meter, but my MPG reading was 15.1. WTF?

I mean seriously. The "gallons used" meter should be very accurate. The odometer reading should be *exact*. How hard is it to make the MPG reading accurate? All you do is take the trip meter reading and divide it by the gallons used meter. The MPG reading should do that every 10 secs or so.

Of course that is granted that you have separate meters for everything. I mean, when you restart your MPG meter, it should have its own trip meter and its own gallons used meter that is independent of the other ones in the info center.
I'm really not impressed with the display readings at all.In fact,the only ones I Believe to be accurate are the trip and odometer.That miles to empty is a crock.It will deduct a mile when I haven't even gone a quarter mile.I've been driving like grandma on purpose to get accurate reading .to no avail though
IMO it is a selling gimmick.
Old 10/24/05, 06:23 PM
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Originally posted by Boltzman@October 24, 2005, 9:15 AM
I'm really not impressed with the display readings at all.In fact,the only ones I Believe to be accurate are the trip and odometer.That miles to empty is a crock.It will deduct a mile when I haven't even gone a quarter mile.I've been driving like grandma on purpose to get accurate reading .to no avail though
IMO it is a selling gimmick.

If you were to stand still with the engine idling, are you still using gas?

If you were to idle for one hour would you expect to get as far as you would have before idling?

I've found all of the gauges to be very accurate.

The miles to empty gauge is based on the last 500 miles of driving. If you were to continue to get the same MPG as you averaged over the last 500 miles you would go X miles until E (which is not an empty tank).
Old 10/24/05, 07:22 PM
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I've driven with my "0 miles to empty" up for close to 20 miles and made it to the gas station.
Old 10/24/05, 11:49 PM
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I've had it down to 1 mile til empty and could only squeeze 15gal in so I'm pretty sure there is a reserve built in. They are trying to make sure you get gas before you run out for real and get sued by Frank Meyer(Weyer?) the IUP guy or something.
Old 10/25/05, 07:53 PM
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Originally posted by AWmustang@October 24, 2005, 8:26 PM
If you were to stand still with the engine idling, are you still using gas?

If you were to idle for one hour would you expect to get as far as you would have before idling?

I've found all of the gauges to be very accurate.

The miles to empty gauge is based on the last 500 miles of driving. If you were to continue to get the same MPG as you averaged over the last 500 miles you would go X miles until E (which is not an empty tank).
Could you explain why my avg mpg has dropped from 17.8 to 15.9-16.2 in the past week when i have driven exactly the same for the past 3 weeks? I have a little over 1000 miles
Old 10/25/05, 08:20 PM
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Originally posted by Treadhead@October 25, 2005, 12:52 AM
I've had it down to 1 mile til empty and could only squeeze 15gal in so I'm pretty sure there is a reserve built in. They are trying to make sure you get gas before you run out for real and get sued by Frank Meyer(Weyer?) the IUP guy or something.
Old 10/26/05, 09:51 AM
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Originally posted by Boltzman@October 25, 2005, 6:56 PM
Could you explain why my avg mpg has dropped from 17.8 to 15.9-16.2 in the past week when i have driven exactly the same for the past 3 weeks? I have a little over 1000 miles

Just a thought...

When does your area switch to the winter blend fuel? Every vehicle we own drop a mpg or so when they switch, which will be next week I believe for our area.. Also, our mpg is lower (3-4mpg on the neon) when I use Diamond Shamrock fuel instead of chevron.. I don't know if our Mustang does that, we've only filled the tank 3 twice since we've had it and the mileage is still going up..

~Mark
Old 10/26/05, 08:12 PM
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Originally posted by maniak@October 26, 2005, 11:54 AM
Just a thought...

When does your area switch to the winter blend fuel? Every vehicle we own drop a mpg or so when they switch, which will be next week I believe for our area.. Also, our mpg is lower (3-4mpg on the neon) when I use Diamond Shamrock fuel instead of chevron.. I don't know if our Mustang does that, we've only filled the tank 3 twice since we've had it and the mileage is still going up..

~Mark
I live in Tampa.There is no winter here.
Old 10/26/05, 08:45 PM
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Originally posted by Boltzman@October 25, 2005, 7:56 PM
Could you explain why my avg mpg has dropped from 17.8 to 15.9-16.2 in the past week when i have driven exactly the same for the past 3 weeks? I have a little over 1000 miles

Also as the temperature drops so does your mileage. Are you resetting the MPG every tank? Or letting it go several tanks? Averages will normalize over time.
Old 10/26/05, 09:34 PM
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Originally posted by AWmustang@October 26, 2005, 10:48 PM
Also as the temperature drops so does your mileage. Are you resetting the MPG every tank? Or letting it go several tanks? Averages will normalize over time.
The temp here has been 90+ steadily. It just got cooler for the first time on monday 24th.this happened before our little cool snap.
Old 10/27/05, 04:45 AM
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The reformulated gas used in the summertime in some cities actually gets worse gas mileage, loses power and costs more to produce in comparison to the regular blend of gas that is used elsewhere, and also during the winter months.

The reformulated gas (RFG) burns cleaner, so it helps with summertime smog and o-zone issues, buy that is about the ONLY thing positive about it, which is why they switch back to the the regular blend when it's cooler and the pollution issues are not as big a deal.
Old 10/27/05, 09:25 AM
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Out here in Arizona (Tucson, and Phoenix area) we get reformulated fuel in the winter (I guesse you can call it winter it gets < 32F at night sometimes)..

~Mark
Old 10/27/05, 11:25 AM
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My GT has just turned 2000 miles. The last tank I ran it down to 1 mile 'til empty. I filled it to brim and could only get 15.0 gal in. So, I believe there is a 1 gal safety margin. I was getting a little worried.

I drive about 80% freeway at 70 mph and am averaging about 22-23 mpg (342 miles on last tank). Probably could get another 1-2 mpg but this car is too much fun! The meters seem to get the mpg correct. It seems like we lose about 1 mpg per 5 mph at steady speed.
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