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Well let me give you some back ground info first, when the u-joint failed the drive shaft came loose from the front diff while the jeep was in motion so it banged all around and took out my primary o2 sensor. I removed the drive shaft and drove to and from work without it installed for about a...

I replaced my front drive shaft u-joint after it failed (from front drive shaft to front diff input) and now at about 55-60 mph I have vibrations and growling any ideas? :cry::x:cry::x:cry::x:cry: 98 TJ Sport 4.0 5 speed

When I checked mine it did seem to hold pressure for a long time at the injector rail, I left the gauge hooked up for about 30 mins.

I'm curious too, I have had the same issue with my 98 sport 4.0 from day one. I did checked the fuel system pressure and it was in spec checked all my electrical connectors for my under hood sensors, the fuel filter on my Wrangle is in the gas tank (part of the fuel pump / pressure regulator, as...

Welcome to Z dude!!!

Welcome to the jeep side!

Wow! You guys rock! Thanks for all the info, I guess I know what I'm doing with my tax return, I'll be sure to take lots of pics & post em when I can do the upgrade!! Found some info on injectors in general (yeah I'm a dork) and my TJ has Crown Fuel Injectors #53030778...

Thanks for the info Bounty, do you have any part numbers?

I heard that the 4.0 TJ responds well to a fuel injector upgrade, is this true? What is involved in this upgrade (part number, lbs / hr, spray pattern, engine mods, fuel pressure, emissions & etc...) if this a valid modification? Any light shed on this question would be greatly appreciated...

Welcome Pops!

Wow that sucks man but glad you your kiddo and the jeep are ok.

Woo-Hoo!! :D That looked like fun, knock any teeth loose on the landing?

Sup man, U in Colorado?

Sweet! You've created a Monster!!!

Sweet TJ !

Nice find, they kinda look like the PIAA 510 series.

Craig's list is where i got mine for under 200 bucks. Try there dude.

My personal experience with death wobble turned out to be damaged factory aluminum alloy rims (bashing them from 4 wheeling, actually had cracks and chunks of rim missing). The wheels were damaged so bad they would cause death wobble right about 40 - 50 mph (unbalanced). It would start when I...

I noticed the jeep was making a new noise today on the highway (low hum / growl). I can also feel a vibration /grinding through the steering wheel at about 60 mph, it becomes very apparent when I turn the wheel to the left when changing lanes, I'm pretty sure its my front driver side hub / unit...

Get the winch.