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2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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Old 10-18-2016
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I am: Ryan Duncan
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Gas mileage

Hey everyone I'm new to ranger forums. I have a 2002 Ford Ranger XLT 3.0 L V6 automatic 4 x 2 162,000 miles. 31 inch tires, 3 inch lift, CAI, and more. I'm done a basic tune up, plugs & wires, fuel filter, clean MAF, trottle body and IAC valve, all new fluids. I run mobile 1 and premium. I'm only getting 15-16 MPG HWY. My truck runs great. No rough idle or anything, no check engine light. Is there anything I can do to up the gas mileage??? Please leave your thoughts
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Old 10-18-2016
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lift? what type ? body or suspension. these trucks are not known for great gas mileage. go back to stock or get a lil car for gas mileage. i have a '95 4x4 3.0 and on good days i can get 20 mpg high way. when i get the front lift done and 35"tires on all four corners ill be looking at 12 to 15 mpg depending on how i drive and the weather
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Old 10-19-2016
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Quote:
Originally Posted by RCD1320 View Post
Hey everyone I'm new to ranger forums. I have a 2002 Ford Ranger XLT 3.0 L V6 automatic 4 x 2 162,000 miles. 31 inch tires, 3 inch lift, CAI, and more. I'm done a basic tune up, plugs & wires, fuel filter, clean MAF, trottle body and IAC valve, all new fluids. I run mobile 1 and premium. I'm only getting 15-16 MPG HWY. My truck runs great. No rough idle or anything, no check engine light. Is there anything I can do to up the gas mileage??? Please leave your thoughts
I mean, it's a 14 year old lifted pickup... Lol. That seems about on par for for 3.0. Depending on what gears you have now, you can look into regearing, but it really isn't worth it. Especially only turning 31s. If the truck is running properly, the tires are properly inflated, and everything is functioning properly, that's about the best you can do.
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Old 10-19-2016
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Welcome to the forum


Stock 2002 3.0l 2WD automatic shows 15mpg city, 20mpg highway, 17mpg average, but "grain of salt", those are Fords calculated numbers not real life numbers

Larger wider tires will pull that down from weight and friction, point of wider tires is better traction, but better traction means better friction and friction slows you down.
And weight is weight, simply takes more energy(mpg) to pull/push more weight.
Higher tire air pressure will reduce friction and give slightly better MPG.

Aerodynamics, pick up trucks are not aerodynamic but when lifted you get a double whammy from air resistance.
Stock height can help reduce air resistance on the under side when you get up to above 50mph.
When you lift body/truck higher you lose that and the cavities trapping air on the under side slow you down so more power is needed to maintain speed, MPG goes down.
You can cover the under side with plates, but really more work than the improvement you would get because of added weight

At 162k miles the upstream O2 sensors should be changed, they tend to cause lower MPG when they get above 100k miles.
O2 sensors use a chemical reaction, like car batteries do, so they do wear out.

Last edited by RonD; 10-19-2016 at 10:39 AM.
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Old 10-19-2016
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I am: Ryan Duncan
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Mileage

It has a stock 7.5 inch rear end with 373's. I'm going to change the up stream O2 sensor and put a speed demon coil pack on it. In the near future I would like to do a dual exhaust and and a fan set up
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Old 10-19-2016
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I get 18-ish with a 2.9 lifted 4" but 22 with a bone stock 97 4.0
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Old 10-19-2016
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My last tank got 21.1 on 87 octane. Bear in mind I am 60 years old, driving mostly highway @55mph. Yeah, I'm that old fart going too slow! LOL
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Old 10-27-2016
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Apple.....obd2 fusion
Elm327 wifi

Android ......torque pro
Elm blue tooth

Look at fuel trims.....understand them and you will see if your truck is truly running badly. Check engine light is a last resort with vehicles and the computer is a great compensator. Your truck can seem fine and be running very poor.

My truck was running +3 on bank 1 and +10 on bank 2
This means bank 2 ruins 7% lean
The computer adds fuel and gives you bad mileage.
Fuel trims are all you have to diagnose

While your at it. Your o2 sensor upstream bounces between .1 and .8
If they are not......your o2 could be bad.

Learn fuel trims and o2 data and you will be way better off.
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Old 10-30-2016
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I am: Brian Rector
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You must understand that the vehicle was not designed with all your modifications. Largest recommended tire size is 225, maybe 235, and your choices are what is killing your gas mileage. My 1992 is completely stock with 225/70r14 tires and it gets 24 mpg on the interstate. If I cruise at the red mark "55" I can get 26, but that is harder to do these days as speed limits have increased. The extra load you have put on your engine with your modifications has resulted in reduced mpg......you can't get it back and keep your current setup.
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Old 1 Week Ago
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Another thing to consider is that your larger tires mean that your speedometer is showing slower then you are going. That also means that your odometer is also reading low. With just my 235/75/15 tires, my speedo is off 5 mph at 70. That should mean that when my odometer shows 280, I have actually gone 300. Recalculate using that info, other a more aggressive number because your tires are bigger and it won't be as bad as you think it is.
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Old 1 Day Ago
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Same

Quote:
Originally Posted by RCD1320 View Post
Hey everyone I'm new to ranger forums. I have a 2002 Ford Ranger XLT 3.0 L V6 automatic 4 x 2 162,000 miles. 31 inch tires, 3 inch lift, CAI, and more. I'm done a basic tune up, plugs & wires, fuel filter, clean MAF, trottle body and IAC valve, all new fluids. I run mobile 1 and premium. I'm only getting 15-16 MPG HWY. My truck runs great. No rough idle or anything, no check engine light. Is there anything I can do to up the gas mileage??? Please leave your thoughts
I have a 3.0 2000 extended cab xlt and I get about the same gas mileage with the stock tires and no lift. It all depends on how you drive. One thing you can do is program it to boost the fuel economy but if you don't wanna do that then I'd keep the as a back up road vehicle and an off reading truck
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