[jeep'd]

If your looking for suggestions and/or taking notes I would love to see and then buy a 2 door jk rubicon with a 4L diesel in it. And if I could get the select-trac to go with it, until I need to use the AIR lockers of course, that would be awesome!

[JeepEngineers]

Originally Posted by Photojeep

Since the Wrangler is probably the world's most modified vehicle perhaps you might be able to answer the question about modifications affecting a Jeep's warranty.

Some on this site say that unless the mod directly affected the part that fails, there is no warranty problems. Is this true?

I realize you guys are engineers but maybe you can clear this up? It seems some dealers don't know this for sure.

And thanks for being here!

RB

Your dealer is your first contact for warranty problems. If the logic that they use to deny a warranty claim seems, well illogical, then you can talk to the district manager for your area. For example, If you put bigger tires on and the radio fails, then there seems to be no problem. Again, Talk with your dealer service manager first.

[JeepEngineers]

Originally Posted by jeep'd

If your looking for suggestions and/or taking notes I would love to see and then buy a 2 door jk rubicon with a 4L diesel in it. And if I could get the select-trac to go with it, until I need to use the AIR lockers of course, that would be awesome!

NOted.. We like Diesel power too !

[JeepEngineers]

Originally Posted by Panici

Wow, nice to see you guys actually getting involved with the community.

Heres my question. Why scrap the tried and true 4.0 for the V6 in the JKs? I have heard it was because of fuel economy, but I don't know for sure.

Just to elaborate a bit...

The 4.0L was replaced for a variety of reasons, one of the most important being crash regulations (the 4.0L is a BIG engine, dimensionally speaking) and the second being volume - after the build-out of the XJ and the switch to the 3.7L in the WK, there just wasn't much of a business case to keep building a low volume engine like that. And contrary to popular belief on the internet, the 4.0L had no problems passing emissions standards, nor would it have for the forseeable future if we had kept it.

[JeepEngineers]

Originally Posted by Panici

Wow, nice to see you guys actually getting involved with the community.

Heres my question. Why scrap the tried and true 4.0 for the V6 in the JKs? I have heard it was because of fuel economy, but I don't know for sure.

The 3.8L is more efficient, provides a better torque curve and is quieter than the 4.0L. Overall, the 3.8L provides a better driving experience both on and off road

Thanks for the question

[grogie]

What TJ's actually came with ABS (my Sport does... was it just the Sport model)? .

[scottyc]

Do you guys miss Daimler?

[JeepEngineers]

Originally Posted by JeepEngineers

Just to elaborate a bit...

The 4.0L was replaced for a variety of reasons, one of the most important being crash regulations (the 4.0L is a BIG engine, dimensionally speaking) and the second being volume - after the build-out of the XJ and the switch to the 3.7L in the WK, there just wasn't much of a business case to keep building a low volume engine like that. And contrary to popular belief on the internet, the 4.0L had no problems passing emissions standards, nor would it have for the forseeable future if we had kept it.

Will ALWAYS be MY favorite engine of all time for a swb Jeep. Period.

[JeepMan1975]

Most people who come on this site with a new JK often complain about a bad odor that emits once they engage in four wheel drive or when they're just driving along, but then disappears after a few uses.

Assuming that it's not the driver or passenger's body odor, can you guys comment on this? What's burning off to produce the smell?

[JeepEngineers]

Originally Posted by 8282feet

I should have mentioned that I know the dealer can (for $55), but I'd prefer the Yellow Box approach (for a few $ more) for fine tuning and future flexibility to change again, if it doesn't cause problems. Would it cause problems to install it as described in prior post? Thanks.

the yellow box would work fine ...however sine the signal is low voltage i would tap in at the pcm under hood and use sealed connectors to prevent water entry and corrosion issue in the future...a grounded or corroded 5v line to ground will blow the pcm ..which are not very cheap.

[JeepEngineers]

Originally Posted by scottyc

Do you guys miss Daimler?

NO

[grogie]

Originally Posted by JeepEngineers

NOted.. We like Diesel power too !

I almost bought a CRD KJ... but already had a KJ in the family. Wow, it was impressive! I now have my eye on a CRD WK.

[JeepEngineers]

Originally Posted by grogie

I almost bought a CRD KJ... but already had a KJ in the family. Wow, it was impressive! I now have my eye on a CRD WK.

Awsome ! That is a kick *** powertrain !!

[JeepEngineers]

Originally Posted by grogie

What TJ's actually came with ABS (my Sport does... was it just the Sport model)? .

The ABS was a stand alone option on all except rubicon due to the locker. The option rate was very low - not many ordered it!

[texaskev]

I'd like to repost Paragon's question since I'm needing this info also:

On 2008 JKs and the TPMS system. When upgrading to larger tires, a lower air pressure is sometimes required for proper tire wear and handling. There doesn't seem to be a way to recalibrate the TPMS for the new aftermarket tires. Has this been addressed?