4.7L WH Grand Cherokee HELP!!

[Jeepin GUTTA]

Originally Posted by Snort

Or drive it less......

Diesel was the plan but this one poped up cheap and only with 118***

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[vk2jdh]

The question is though, what economy are you getting now?

[Jeepin GUTTA]

Originally Posted by vk2jdh

The question is though, what economy are you getting now?

My very best so far is 12.4 on hwy with tailwind usually 13's hwy and mid 16s town

[ruffy01]

Originally Posted by Jeepin GUTTA

My very best so far is 12.4 on hwy with tailwind usually 13's hwy and mid 16s town

That sounds pretty heavy on fuel. Any mod's? Lift, bigger tyres?

Mine, when standard, got ~10.3 L/100 and ~14 around town.
Now ~12 highway and ~15 around town with 3" lift and 32"'s.

Check your air filter, if it's bad that will cause excess fuel consumption.
Otherwise, exhaust, possibly O2 sensors and wouldn't hurt to check engine compression.
How's the auto? Converter locking up? Not slipping through gears?

That's just a few ideas off the top of my head.

Good luck,
Ruffy

[Tyvokka]

Originally Posted by Jeepin GUTTA

Need assistance on getting a device to give me better fuel economy with the powertech V8 in my 06 grand cherokee limited thanks

A recalibration of expectations.

It's a 4.7 V8, 4WD, heavier than a small car etc, so won't have that kind of consumption or drive like one.

Put the money saved from not buying a diesel towards maintenance as said or previously discussed or small tyres, oem bumpers, don't fill up keep it light etc.

How about a LPG conversion?

[Jeepin GUTTA]

Originally Posted by ruffy01

That sounds pretty heavy on fuel. Any mod's? Lift, bigger tyres?

Mine, when standard, got ~10.3 L/100 and ~14 around town.
Now ~12 highway and ~15 around town with 3" lift and 32"'s.

Check your air filter, if it's bad that will cause excess fuel consumption.
Otherwise, exhaust, possibly O2 sensors and wouldn't hurt to check engine compression.
How's the auto? Converter locking up? Not slipping through gears?

That's just a few ideas off the top of my head.

Good luck,
Ruffy

Yeah no mods and all mechanics are really good could be air filter or o2 senor Cheers


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[JamesLaugesen]

Try running higher tyre pressure for a few tanks and see what effect that has.
Aside from a 'fault', tyres, tyre pressure and roof rack/load have the most impact on an otherwise stock car in my experience (I was a bit of a 'hypermiler' nerd in a past life.).

But take comparisons within a couple L/100 on forums with a grain of salt, just gotta try something and see what it does for you.