WildBillMI

Just thought I'd get some input on what plugs, wires and other tuneup parts everyone here recommends for the 4.0L

I have a 2000 Cherokee Sport 4dr 4.0L that is coming my way later this week with 198K on it.

I know with my other cars that there are tried and true go to parts like Autolite Copper 104's, ACDelco wires, etc.

What does everyone recommend here for these 4.0L?

I plan on placing an order on Rockauto.com in the next couple days so I appreciate any and all advice!

99 Purple XJ

For what ive heard 2000s run good with NGK

victorlanda

I bougth BWD coil boots, i think your xj has a coil rail which has no wires and e3 3.58 spark plugs, and they worked fine in my xj ill check them in a couple of months to see how they are doing because ive heard bosch platinum and e3 are not the favorite sp for a 4.0... Mine is doing very nice smooth idle and quick starts i would recommend them. many say to use champion sp

jeepxj19

E3 plugs are terrible, and autolites arent that good either. I have bosch platinum plus plugs some ppl say bosch isnt that good but I havnt had a problem. 00-01s have coil packs so theres no wires or distributors

victorlanda

I think it goes from jeep to jeep because as they say e3 are terrible, they also say that of bosch so not everyone gets the same result. the e3 have not given me any trouble and i can say that my xj starts faster and has a smoother idle, i was sceptical about e3 before i bought them and now ill just use those as replacement i have bosch platinum+4 on my mustang and theyre great also so i guess it depends.

brutalxj

First time I have ever herd of that about E3's. I have run them since they have come out in 3 XJ's A 91,95,and 99. I have also run them in a 95 Jetta, 95 Neon, 98 Tenon, 99 Saturn. I think that is about it. But I think you get the idea. One I go through dd quick and the XJ's well I up graded every time. But Love The E3's. Better MPG's and a seat of the pants difference in all applications. Run basic premium wires and coil in all and will up grade wires and coil at some point but really not necessary at this point. Will run them till I die. And love every second of it. Tested of HP TV at 9 HP gain and for the money best gain for the $.

HCCAFan

No one has bad results with plain old Champion copper plugs.

Mopar wires ftw.

XtreamJ

It's a mopar stick with champions it's what it's made to run

brutalxj

Use to run Champian and will never go back. There was nothing wrong with them. But so much more right with the E3's.

victorlanda

SO true, im keeping my e3's, WildBillMI you should try them. E3.58 i think those are the ones you need

WildBillMI

I will look into them. I'm picking up the 2000 tomorrow. So is this a distributor less system w/o plug wires then?

victorlanda

yes, no distributor and no wires, instead you have to get "spark plug coil boots" those go in the "coil rail" you have to get six, one for each SP.

here are some links for the sp boots
i got the BWD ones so i dont know about the ones at autozone

http://www.oreillyauto.com/site/c/de...3758&ppt=C0334

http://www.pepboys.com/catalog/partr...ory=11&group=5

http://www.autozone.com/autozone/par.../N-jffs9Z9n806

HCCAFan

I'm in my 30s and have seen at least 4 spark plug gimmicks come and go in my lifetime. Seems to be a lucrative business. I'll give the E3s a try when they are 3 bucks each at Wal Mart like the Split Fires.

Bustedback

I use what ever is on sale at the time, usually Autolites.

WildBillMI

Split Fires, man those take me back to early 90's lol!!! I remember putting them into an old Honda Accord I had and expecting miracles lol!!!

BTW I'm in my late 30's too...coming up on my 20th reunion next year, yeowch!