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  #1  
Old 01-01-2013, 03:43 PM
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Hi-I just bought an 04 Grand Cherokee I6 with 90,000 miles on it.
I previously owned a 93 XJ and loved the I6 engine so I was looking for something with the same.
I stumbled on this forum and I have to say this is by far THE best forum I have ever found. The amount of info is incredible and I know it will be a huge help to me. I had my XJ for 12 years and I plan on keeping my WJ for a long time too.
I go this one from a dealer and it's in incredible shape. Likely garage kept.
I have so far come across the squeaky suspension issue, and bad mpg (14).
I changed out the sway bar bushings and linkages, but the squeaks are still there. On to changing out the control arm bushings.
As far as the poor MPG, I'm planning on changing the plugs and using Seafoam spray to clean out the throttle body.
If anyone has any other ideas, please let me know.
Thanks!
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Old 01-01-2013, 03:47 PM
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Re: New member

Congrats and welcome !
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Old 01-01-2013, 04:33 PM
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Re: New member

Welcome!!
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Old 01-01-2013, 08:19 PM
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Re: New member

Welcome RJ! I think this place is a good one too.
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Old 01-01-2013, 08:49 PM
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Re: New member

Welcome to JG!
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Old 01-01-2013, 10:05 PM
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Re: New member

Quality synthetic fluids through-out and proper tire pressures will help the mpg. Of course it depends on how heavy your right foot is as well.
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Old 01-02-2013, 07:40 AM
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Re: New member

Welcome to the garage and a happy new jeeping year.
Probably best to do a full tune up first and see if the mpg goes up. So not only plugs and seafoam, but also air filter, oil and oil filter. If you donīt know the service history, you could better change all fluids/liquids soon, to start from zero.
If after the tuneup the mpg doesnīt go up, check the fuel pressure at the fuel rail or just simply change the fuel filter/pressure regulator.
Is the suspension noise really a squeek, or more like a rattle? The rear shocks mounting bolts are known to cause rattle and an other type of bolt could solve this.
And oh, i almost forgot it:
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Old 01-02-2013, 10:28 AM
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Re: New member

Congrats and welcome aboard! This is, by far, the best forum EVAR. Good luck and post up some pics when you get a chance.

Like everyone else here said, a good tune up, plugs/wires, air filter, TB cleaning, a good seafoaming, quality gasoline and an oil change are all a great place to start. I typically also throw on a new serpentine belt when I buy a new (to me) vehicle and stow the old one in the spare tire well just in case. If you live somewhere where it's cold this time of year, you'll get crappier mileage with winter-grade fuels.

Don't forget a drain and refill on the diffs and transfer case if you don't know for certain it was done.

Front squeaks are usually end links or swaybar bushings, but you said you already replaced those. Shock bushings could be another place to look. Try bouncing the front end while parked and see if you can replicate the noise.
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Old 01-02-2013, 09:42 PM
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Re: New member

Thanks everyone for the welcomes and the advice.
Pics coming as soon as it warms up enough for me to hold the camera steady. It's pretty freaken' cold here!
Continuing repair/replace plans are:
New front sway bar bushings and all control arm bushings, hopefully this weekend. My brother in law has a lift, but I can only use it when he's not and he's got projects.
I've got new plugs, fuel filter and Sea Foam I'm doing this weekend too.
I replaced the air filter as soon as I got it. It was filthy.
The oil is fresh, but I'm probably changing over to Amsoil. I used it in my '93 XJ and I have 3 gallons of it and an Amsoil filter that I need to check to see if it's the same p/n for my WJ.
All the rest of the fluids to be done soon.
The only other thing is the heat/AC panel. The flow direct knob is sloppy. I'm never really sure if it's on vent, feet, both or what. So, I'll hit the local junk yard and see if I can find one that's clicks into position better.
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Old 01-03-2013, 07:55 AM
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Re: New member

I think all of the 4.0's use the same oil filter, but I'm not 100% sure on that. My XJ was a 98 and there were lots of changes made that year.

Be prepared for a bit of a fight with that fuel filter. Mine was an absolute h00ker. The "not so quick" releases were a huge pain. Again, yours might be different than mine...my fuel filter was mounted outside of the tank and was a canister style about the size of a can of soda. Here's a bit of a write up on the whole thing.... Good luck!

Replaced Fuel Filter
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  #11  
Old 01-03-2013, 12:53 PM
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Re: New member

Thanks for passing along the link to the fuel filter write up. I like it when I can refer to step by step directions and that one is well done.
I might buy the tool and save myself some aggrivation. Then again, if you break the clip, why can't you just use a small hose clamp?
I found out that the oil filter is the same, so I save a few bucks there by having the Amsoil filter on hand.
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Old 01-03-2013, 02:32 PM
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Re: New member

Welcome fellow newb. Also just picked up an 03 Grand Cherokee with 90K.

This site is very active and has so much to offer! Looks like I'll be spending a lot of time on here.
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