Originally Posted by Al's92xj

To Carolina Girl: e3 spark plugs are a good choice because they improve gas millage slightly and also helps put out a cleaner exaust. Should be able to find them at a local auto zone or a similar place. For six spark plugs its about $30-35 ish.

And my question to anybody is that on the throttle body theres the controler thingy on the outside with three cables coming off of it. One of them goes to the right front corner under the hood and to some round thingy and the thing has vacume hoses coming off of it and one of the hoses goes to a black bottle thing that was on the back side of my bumper and its about the size of a 2 liter bottle. What is the bottle for and what is the thing the cable connects to on the opposite end than the throttle body for? Any help would be appreciated.

Originally Posted by darkfalcon9112

Good man.

Phil when i took mine off i wasnt sure what i was doing at first the way i did it though and worked like a champ. (P.s. thought i had blow by too before this.) ran gas through rear ccv orafice attached to valve over and through tube while off jeep off course. Then UnBolted what i thought was some kind of valve then found out that its the ccv orafice on the Intake manifold. I thought it was a valve when in fact it is just a calculated orafice . So cleaned it nice and slow.... p.s. Its a hole straight through on mine and prob yours so skinny screw driver or scribe work wonders then ran cleaner through it. HOLY CRUD when i put it back on it was like a brand new J**P. I did eventually hang my head low and buy the ccv on the valve cover and tube from dealer and that even made it better that back tube is really important also my gas milage went up after that and response.

If you have any questions regarding this anyone just ask me i will take it off and take pictures or show in tech breakdown what it is!

Originally Posted by dukie564

e3 plugs have no benefit in the 4.0L engine, and may actually make it run worse. Stick with the stock champion copper plugs for 84-99 Cherokees and stock NGKs for the 2000-2001 coil pack setup.

and to your question, that's your cruise control module under the hood, and the canister is a vacuum reservoir.

Originally Posted by Al's92xj

So would it be ok be eliminate it? And where is the cruise on/off button in the first place?

Originally Posted by Al's92xj

So would it be ok be eliminate it? And where is the cruise on/off button in the first place?

Originally Posted by LoveMy89Anya

this may have answered my question, but im going to ask anyway just to make sure. i did the same thing as the guy the above quote was aimed at. i washed the engine bay pretty good ( stupid baked on grease wouldnt come off even with degreaser though ) and also power washed the undercarriage of the jeep as well ( tired of getting dirt in my mouth and eyes every time i crawl underneath her )

now before this she was just fine, i finally got everything figured out and she was running great. after the washing, she vibrates horribly upon any acceleration, and the vibration increases as the speed increases. the sounds its making sound like its coming from the valves and the muffler. diagnosis, my friends?

Originally Posted by 19kiloxj

HEY DUKIE
my buddy has an 86 chief with the 2.5l automatic, his tranny is shot, our parts jeep is an 89 4.0L with an automatic, would the parts tranny bolt up to his chiefs 2.5L