Do someone know any tricks to adjust the engine, to get a better fuel economy, at a ´97 4,6L triton engine?
The price of a gallon gas, is about 5,5 usd, in denmark now, and I run about 15 mpg, with an easy foot at the pedal, new air filter, new spark plugs.... the mileage is 60.000 now..

 

Good luck getting good mileage out of these things. If you want good mileage, trade it in for a 4 cyl Toyota Tacoma.

 

Not doin bad @ 15

 

clean your injectors and change pcv, those are good starters

 

Not much that can be done for the engine - just two many cylinders to feed. Try to drive with your windows up and the A/C off (remember, most of the heat and defrost positions still run the A/C compressor). You can add heat to the vent position without running the compressor, and a high fan speed can help cool the cab on warm days. Also, keep your tire pressure at the maximum safe level, your front end aligned properly, and your engine in top tune (including a clean air filter). At 5+ USD per gallon, you may want to consider taller rear gears (lower numerical ratio), or higher profile tires.

Examples:
Run a 3.08 rear gear ratio, vice the 3.55 or 3.73 gears you now have.
Go to a 80 series tire or larger wheel/tire combo (18 or 20 inch wheels, vice the 16 or 17 inch wheels you probably have now).

Caveats: A rear gear change over is expensive, and may not pay for itself; different (taller) tires can have a good return on investment if you needed tires any way, or can get someone to buy your old tires; buying new wheels and tires cannot be justified/payed for by increased fuel economy alone.

In short, good driving habits and proper maintenance are your best bets in the fuel economy game. Sorry I couldn't offer more.

 

Good maintenance too - you can try using some performance synthetic motor oil. I use Royal Pruple. Supposed to have Moly in it to help coat internal metal to metal surfaces, lower friction, lower heat = some improvement in mpgs ( i have an expedition with a 4.6 so I am desperate!). Also clean your mass air flow sensor w/t spray cleaner designed just for that purpose. That sensor is a thin wire that helps the computer calculate how much air is coming into the engine and how much fuel to send to the cylinders. You can also clean your throttle body (again with cleaner made for that), get your fuel system cleaned professionally. Use the BEST quality gasoline. Expericment with different brands. You will see a slight difference from brand to brand.

You can also contact Troyer Performance to see about getting a custom fuel economy tune for the Xcalibrator II tuner. That will run $400 or so. I have it to help w/ power and drivability.

Anyhow, take care of all the little things that your engine and tranny need to make optimum fuel economy. Also, slow down if you can on highway driving. If you are driving a pickkup, consider getting a tonneu cover to reduce drag on the back.

There are a bunch of things you can do which will act in concert to help you.

Keep reading these forums. In a few weeks you will be an expert!

 

Thank you for answering...

 

15 mpg isnt bad. i cleaned my throttle body any she has gotten some of her pep back. gas mileage seems better also.

 

i think im gettin 18mpg now

 

15 mpg it must be nice. get 11-12 mpg with the 4.6

 

I'm lucky to get 12 on the freeway with my 5.8 V8, it's a thirsty beast.

 

Actually 4.6L are turds with low rpm torque, putting 3.08 gears in a 3.55 truck, would see signifcant losses in city and low highway rpm mpg. Low rpm doesn't mean better mileage neccessarily, if your truck has to compensate for the lower rpm with more fuel your mileage drops. I'm actually swapping my 3.55s to 4.10s for improved city milage and towing capabilities, do a search a 4.10s with th 4.6L and you'll see what I'm talking about. From what I have read here and elsewhere, the 3.73 gears seem to have the best overall cominationof highway, city and towing capabilities.

Also, having a light decreases your gas mileage too, if you spend a lot of time driving in the city as do I, you may want to get and heavier foot. When babying the throttle and shifting from 1-2 at below 2500 rpm, with the rest of the shifts in similar fashion I could at most get 12.5 mpg. When changing my acceleration pattern to 1-2 at 3000-3200 rpm, 2-3 2500 rpm, 3-4 2300 rpm, mileage increased to 14 mpg. Instead of straining at the low part of the torque curve for prolonged shifting like grandma, you stay in the powerband and quickly drop your rpm to cruising speed, gaining quite a bit of mileage. The only problem to this is, ricers think you're racing them so your mileage drops when you have to spank them and put them in their place.

To answer your original question there is no cheap mileage improver, if your good with a dremel or whatever you want to use, maybe polishing and porting your throttle body and elbow would see improved mileage as well as power. The good part about this is you only have to buy a new gasket, and you being Canadian and all maybe you should contact Neal so he can help you out . Sorry I couldn't tell you want you wanted to hear.

 

Though this isn't an engine mod, if you want better fuel economy I would get an e-fan setup. I've heard e-fans can add up to 1-2 extra mpg, as well as extra horsepower since you don't have the parasitic loss from the stock fan. I don't have a set yet, but its definitely my next mod... It'll pay for itself sooner than you think.

 

denmark is in europe, LOL


try underdrive pulleys and electric fans, a tuner like the XCAL2 and maybe exhaust system mods (such as lightning / harley truck high flow mid pipes to a Y pipe and a magnaflow 3 inch single in / out muffler)

what's the exchange rate of the euro VS the US dollar right now?

 

I was getting 16.5-17 in my 1999 with the 4.6 (2WD).