AzPacknHorns

Neewbie wanting to do a tune up on my 92 xj 4.0 was hoping you guys could give me a good parts list,plugs,wires,etc...if you could include brands of parts you have had good luck with that would be very helpful.

jaygitt82

i have heard that the E3 plugs are good. but i just run a champion with a old school side gap job on it. cant help ya on the wires mines a coil pack

RTorrez1

Stay with Champion copper plugs gaped at .035. The E3 and any of those fancy plugs are garbage and a waist of money for the 4.0. As for the cap and rotor make sure to get something with the brass contacts.

jbdpayne

x2 on the champion coppers they run smooth, i also have a coil too instead of wires, but it wouldnt hurt to get new wires and filter too

mdnov

Accel has a kit with plugs, wires, cap, and rotor. It is a good quality kit. I did not use the plugs though, I got the Champion plugs. The kit is available through Quadratec and Summit Racing. I can't remember the part number off of the top of my head though.

belvedere

I'm a little biased since I work part-time at NAPA, but I would use Belden lifetime wires, Echlin cap & rotor, Champion plugs, and NAPA Gold/Wix filters.

mdnov

I had the Belden wires, I was not impressed too much with them. The Accel wires are nicer in my opinion. I do use a lot of Napa parts but I do not use them exclusively.

mdnov

Just make sure your cap has brass terminals. I also like the Napa Gold or Platinum filters.

tjwalker

^^^ I'm with Belvedere on his recommendations.

Get the PREMIUM cap and rotor with brass contacts. Don't forget to get a new fuel filter and air filter too!

The Rooster

How many miles on your Jeep? if its over 100k and the o2 sensor has never been done... I would do that also it will give you a lot better gas mileage
and i agree Brass tune parts are a must...

tjwalker

Good catch Rooster. Oxygen sensors are often overlooked. They are not that expensive and they DO have a finite lifespan. I recommend NTK oxygen sensors for the 91-01 4.0 engine.

The Rooster

yeah with all the reading and learning on here I think it should be apart of a regular tune up item now just my thinking...

AzPacknHorns

Like i said earlier im a newbie...so where is the o2 sensor located?

The Rooster

its on the exhaust depending on your year... can be in the cat before the cat or after the cat

AzPacknHorns

Cool thanks for clearing that up....i hear people talking about sensors on their jeeps all the time,what other sensors would a 92 xj 4.0 have and where are they located?