How early does your gas light come on?

Try looking at the schematic for a 2nd Gen Tacoma rather than "any schematic on fuel systems". Not all vehicles are the same.

 

There a metric ton of variation as to how many miles you will have on the ODO when the light comes on.
I have seen my truck have as few as 260 miles to as high as 330 miles when the orange light came on.
The point at which the light comes will vary I'm sure due to the tempature of the gas inside the tank as well as ambient tempature(summer time will cause some expansion)

The fill me light is a suggestion you never know for sure how much further you can go could be 59 miles could 25 miles. I side with caution and assume I've got about 25 miles to find gas. Most I ever put in was 19 gallons. However even if you ran till the engine died your tank will have gas inside it.

 

You mean to tell me I might have to put gas in my truck someday? Oh well....Only 81,000 miles, so it has to be at least half full still, huh? These things get about a million miles to the gallon don't they?

 

My 2012 Fuel pump ... Seems to be at the bottom to me ...
http://www.partsgeek.com/gbproducts...+Google+Base&gclid=CJagj8ezmsoCFc4XHwod9FIPcg

 

Right around 300 miles for me, 17 to 19 mpg avreages. I dive a lot, almost a thousand miles a week, so yeah I run it to the light, all the time. Fill up almost 3 times a week.

 

3 gallons is when my light comes on every time. Tank size is 20 gallons 17.1 is toughly how much I have to fill up with gas every time the light is either on or about to turn on.

You can drive it til the light turns on. Unlike smaller cars with smaller tanks where the light usually means reserve is 1 gallon, this one's reserve is actually 3-4.

The only thing that is at the top of the tank is the top hat of the tank. The pump bucket and pump itself sit at the very bottom of the tank and to prevent coming up is spring loaded under pressure.

The more I wrap my head around failures the more I just realize that it's from people running on fumes rather than running low on actual liquid gas, so I do believe myself that it (the fuel pump) cools itself simply by pumping the fuel through it's body.

BTW, there is no point in babying the stock fuel pump. It's a piece of junk anyways, and VERY undersized for our trucks, which is probably the source of your knocking, pinging, and odd start up issues.

 

OEM part # for 2.7 - 7702004071 - Air Tex counterpart # E8756M

OEM part # for 4.0 - 7702004061 - Air Tex counterpart # E8757M

Google either of the Air Tex parts. They match what canufixit posted.

 

In order to get 18MPG+ in the 4.0 V6, you pretty much have to keep the RPM's below 2000 at all times. On the highway, on your accelerations, everywhere. If you keep the RPM's 2000 or below, you should easily hit the 18MPG range.

 

I drive mostly highway. Keep speedometer between 65-70. Doing that I get approx 20.5 mpg

 

TANKS !!!

 

One would need to do the math BUT what about running different wheels and tires when not off-roading to give you better fuel economy?

 

Just out of curiosity here and to turn this into a little science experiment. What have you changed since getting the better fuel economy? Spark plugs, engine air filters, switch to synthetic oil?

 

I bought the wheels and tires I did because they look great, compliment my truck, and because they function awesome offroad and on. Also in my opinion they look a thousand times better than the stock rubber and wheel set up. I don't think you'll find anyone on this site that switches wheels and tires on and off solely for the purpose of going offroad, that'd be like running a 3" lift with stock wheels and tires and also having a winch, aftermarket bumpers and skids, but then throwing on different wheels and tires when going offroad, which while acceptable, it'd be weird and look weird, and would be an inconvenience. Unless you're suggesting to try the stock wheels and tires out with a lift to see how big of a role your wheel/tire combo play in fuel economy?

 

X2 lol

 

Can you please document your claim as it pertains to 2nd or 3rd Gen Tacomas. I would like to see you back this up with a credible and verifiable document.

 

It comes on when you have 4 gallons left in the tank. So there's still quite a good amount of fuel left. Also the whole cooling the fuel pump thing is true but it doesn't cool from sitting in gas, it cools as gas moves through it. The fuel pump isn't even located in the fuel tank so that theory makes no sense. With that said running your engine dry is not good.

 

I'm with ya, the whole "running low on gas will destroy you pump" argument is paper thing with modern day autos.

Overheat claim:
Pump cools itself with flow and not actually sitting in the tank so his theory is debunked.

Particle claim:
Modern day pumps have screens that filter out most if not all debris, unless you happen to get a trash bag in your tank

 

You are most welcome to your opinion.

 

If the fuel is low enough to damage the pump you are out of gas and the pump is off any way because the engine stopped. Yes the pump is on the bottom pumps push a lot better than they pull. Where is the pump in a deep well? Of course its at the bottom. The fuel pump delivers a lot more gas than the engine uses the rest is returned to the tank so as long as you are still moving the pump is full of gas they do not pump air.