Increasing Fuel Economy
 

I picked up a 2002 Jeep Liberty Sport with a 3.7L and 4X4 in the spring. I was wondering if anyone has installed a "chip" to aid in the increase of fuel economy.

Which brand you would suggest I purchase to increase my fuel economy. I do not do a lot of off-roading and very rarely tow anything.

Thanks

Re: Increasing Fuel Economy
 

Don't bother with the chip.
Increase your tune up by fresh spark plugs, run a bottle of chevron Techron in your gas at next highway run. New air-filter- Remove the IAC (air intake control) motor and clean the IAC and ports. Get the throttle body spray cleaner and get it sparkling inside.
Go up to 4 lbs above door sticker -of psi on your tires and check regularly. Get front wheel alignment.
Dont use stock SRA-ST-Crap tires they are unsafe.

Re: Increasing Fuel Economy
 

What is unsafe about the SRT-ST?

Re: Increasing Fuel Economy
 

Anything worse than dry pavement and light throttle pressure and you will find out really quick how crappy those tires are.

Re: Increasing Fuel Economy
 

I wouldn't even use SRA-ST tires for a tire swing!

If you are considering "Chip tuning" a KJ, just a chip will not do.
You will also need an upgraded throttle body, as well as having
the PCM flashed (Power Control Module ) to take advantage of the
chip as the factory PCM will "Relearn" and reset itself to the factory
specification/programming.
If you commit to all of the aforementioned mods, you may as well
buy a set of JBA headers to take advantage of all the other parts.
Then there is upgrading the exhaust system...
But then you also HAVE to use Premium fuel
or your engine will not benefit from those modifications.
Then, at the end of the day... If you pick up 21 hp extra, you will
be lucky!

Re: Increasing Fuel Economy
 

You guys must be real aggressive drivers,I just came off snows and put ST`s back on as summer tires and to be honest I can`t see what the problem is with the ST`s.
I have been driving in heavy rain and light snow for the last month and have not noticed this tire to be "borderline dangerous" and have not lost traction and thats in 2wd.
Opened up the cottage last weekend and of course the country roads were heaving somewhat with the frost and thaw and the ST`s managed to get through with no issue.
I can see these tires not beiing a good choice for back road driving but for city driving the are fine.

Re: Increasing Fuel Economy
 

I have 2 Libertys that both came new with the ST's, easily the crappiest tires I have ever used and I have to agree with the "borderline dangerous" evaluation. If you don't mind the ST's traction (lack of), then you will be pleasantly suprised by the difference when you put some real shoes on it.

Re: Increasing Fuel Economy
 

Ya I had my Jeep 3 days with SRA-ST, and the first wet hill on road I could not get traction.
If I tried to stop quickly the jeep went for a slide. Just dont use or rely on the stock tires, they are crap.
So on day 4 I bought GY Wrangler Silent Armors' and soon after Luke bought some too for winter.
Attachment 4058
The Silent Armors are kevlar belted in tread and Have thick sidewalls are strong & "good" off road.
Ryan runs MTR's Which are Kevlar tread & sidewall.These are the "best" for off road & awesome grip and of course look uber cool on the KJ.
Attachment 4060
Really the words fuel mileage and Jeep Liberty do not belong in the same sentence. Ryan say he gets 22 Mpg with the MTR's. Removing weight helps and easy on the pedal, but I just drive it and fill it, and when you need a 4x4 on a snowy day or when camping etc, You are reminded you are in a strong lifted vehicle and fuel mileage really is secondary. A Prius gets good gas mileage, want to take it off road?

Re: Increasing Fuel Economy
 

Everybody keeps saying the stock tires are crap, I just don`t see it frankly.
I drove home yesterday evening in very heavy rain in 2 wheel drive with out any hint of traction loss.
You guys must be very aggressive with the gas and brake pedal.

Re: Increasing Fuel Economy
 

You must not be a very good driver then if you don't feel how shitty those tires really are!

Re: Increasing Fuel Economy
 

Ya that must be it!:retard:

Probably the other way around, you guys are the ones who can`t drive in the rain without loosing traction!!!:dunno:

If you guys want to drop coin on a new set of tires thats fine but to say the ST`s are dangerous and you can`t get up a wet hill well that`s just silly,glad you guys are not drivin where I`m drivin.:smile:

Re: Increasing Fuel Economy
 

Well, go check out Jeep KJ Country and LOST KJ's and tell the several 100's of Jeep Liberty owners that they too are all on glue because they too think that the SRA's are total crap!
Not to mention the owners of other vehicles that came with those "Excellent" tires!

Oh, BTW?

I have driven a total of 30 years this year... And not one collision with another motor vehicle or any other object for that matter! And I live in Richmond!

But hey, you like them and that's all that matters...

That's why Goodyear keeps making them, just for drivers like you!

Enjoy them, We didn't.

Re: Increasing Fuel Economy
 

Hey I don`t doubt some of you guys are having issues with the ST`s and judging by the equippment you have on your Jeep you need a little more tire and that`s fine, all I am saying is some of the comments about the tires are just plain silly and for the average Jeep owner the stock tires are fine.

Not all Jeep owners need or want their vehicles to look and handle like rockclimbers!!!

BTW I use my Jeep for business drive 40-50k a year and use snow tires in the winter!

Re: Increasing Fuel Economy
 

Actually, if you were to drive our Liberty you would be pleasantly surprised and impressed at just
how much more comfortable the ride quality is and how much better it is to drive compared to a
factory stock KJ; and that it also handles superiorly compared to a bone stock Liberty!
That was actually the selling point for LibertyTC to decide and go ahead and lift his Jeep.
He was already a step ahead in the right direction with his Silent Armours tires. But didn't realize
what he had been missing!

When it's time for you to replace your tires, you can do much better for the same price as the Goodyear SRA's.
Those are the facts, plain and simple.
You see, I am disabled and I need all the comfort and safety I can get out of our Rig!
All the power to you for having proper winter rated tires for you Liberty.

Let's see some pictures of it!

Cheers
Ry'

Re: Increasing Fuel Economy
 

Nothing special about my liberty Ryan just a stock unit but I love it, it tows my 18 foot boat easily and when I throw the snows on it has super traction that I need as I live in a bit of a snow belt.
And I agree on the tires the ST`s are not great but they serve my purpose in the summer but I will not be buying another set when the time comes I am sure that there are much better tires out there for the money.

Re: Increasing Fuel Economy
 

When I purchased my Jeep back in 08 they came with Good Year HP. The stock tires had about 50% and were kinda noisy. It was up a hill after stopping in rain, where I could not get traction, and decided the 225-65-17 HP's had to go. I chose the Silent Armor after comparing sidewall thickness and the fact the kevlar belts made this tire "the strong silent type" on or off road. They are snow flake rated as well and handled the 9 feet of snow that landed here over the winter of 2008 with safety in mind. I went up to 245 width in 65-17 at that time. I hit a large glass bottle at highway speed and I was very pleased I had the Silent Armors installed. I am afraid to ask what might have happened if I had hit the bottle with the SRA's on. To me when it comes to tires on a heavier SUV only the best for safety should apply.
It was only after driving Ryan's rig that I realized how bad my rig was in stock form.I was pleasantly surprised after the OME lift how much better my jeep now drives and feels. The stock suspension was bagged, and you only really know it, after doing new springs and shocks.
https://www.jeepscanada.com/attachme...ine=1315019955
SO back to on topic Increasing fuel economy..State of tune in a nutshell, lighter foot, less weight and a few lbs extra air in the tires can improve the MPG. Plugs should be changed out about the same time all the driveline fluids are in need. Throttle body cleaning and new air filter is also part of it.
Recently I have been trying to find lower percentage of ethanol in the fuels. Some super's dont contain it and if you ask me that is a good thing. I like to run Chevron fuel and add a separate bottle of Thechon additive as an extra strength cleaner, to keep the system clean every 3 months.

Re: Increasing Fuel Economy
 

I will definately look at the SA`s when it`s time.

Good gas mileage and a jeep really don`t go together but agree the little things help, I just finished a run from Orangeville to Nakina and back about 2500km`s round trip averaged 29 mpg with the Liberty which I thought was pretty good considering the truck was fully loaded.

Gassing up in Long Lac, love my Jeep!!!