CoffeeCommando

Don't buy a Bosch. I've gone through 5 of them now.

I just started looking around and it appears that it's not very compatible with Jeep.

After looking around more, it appears BMW and Lexus owners also have failure with them as well.

In the end NTK, aka NGK, are the only ones to go with. Learn from my mistake.

NAPA is the only store that has them readily in stock too. Who would've thunk? And they're cheaper.

I guess it's ok to shop at Azone and Advance as long as you research every part you buy. I've never once had a failed part from NAPA. $370+ dollars later in 02 sensors I have finally made the connection between NAPA and their catch phrase "get the good stuff" .

Just an FYI, the NTK 02 sensor is the one that is also referred to as MOPAR.

Also, cleaning 02 sensors doesn't seem to work. The third link confirms my suspicions since I have tried and met with no results.



Some other past posts I found on Cherokeeforum:

https://www.cherokeeforum.com/f2/wha...l-tried-94454/

https://www.cherokeeforum.com/f2/o2-...ere-buy-93033/

https://www.cherokeeforum.com/f2/how...sor-bad-87400/

Magiksreal

Bosch screwed me too. I went with a denso and love it!

If you can't be good, be good at it!

CoffeeCommando

Just want everyone who ever does a search for Bosch or NTK 02 sensors to know... the gas mileage has improved drastically with the NTK over the Bosch. I spent 25 out of 35 miles wheeling off road and just barely passed the full mark. Driving straight on a high way I would have passed the full line already.

I don't know how some of you get away just fine with those Bosch 02 sensors.

Also, I drive a 98. Maybe certain model years has something to do with.

Moncheche

Crap. I just threw in a Bosch. It was my only option at the time. (wire loom wrapped around forward propeller shaft)

I'll let you know. I will hook the jeep up to my MOVI and see how that sensor is doing.

Coffee has never given me trouble, until NOW!

94JeepCherokeeMan

How much are those O2 sensor wrenches? I need to do mine too. I tried to remove mine cold, hot, pb blasterized, and all and it didn't wanna come off. I might need to find a bigger combo wrench and make a cheater bar/pipe to get the darned thing off. Def going with NTK. Oh, and what is the suggested way of getting the wiring harness detached from the O2 sensor?

CattyXJ

Heat the bung with a torch, just the bung, not the sensor, and give it a crank with some channel locks. I fought with it for an hour, rounded off the nut on the sensor with a 7/8 box end and broke one pair of channel locks, and as soon as I put the torch on, it came right out. Good luck!

Sent from my iPhone using CherokeeFM

xjmonkey

ive been running bosch, no problems 88 renix

crystalion

I've run Bosch in 3 out of my 4 cars and no problem. The other I bought a Denso.
I bought a O2 socket set from Amazon for $25 --decent and they work.

CoffeeCommando

I think I spent 15 on one of those sockets from autozone. Worth every penny considering how many 02 sensors I went through.

02's are also sensitive to being dropped. NTK's come better boxed than bosch's. There's the possibility that every damn one of all 5 of them I bought had been dropped. Just depends on dumb luck. Some of us are dumber than others, while others are luckier.

Simply pushing the pin and pulling always has worked for me. You'll need to hold one side of the barrel connect with your other hand. It's not a one hand job.

Remember, if you replace one sensor it's a good idea to replace both. You can initially replace one and see if after about 15 miles you get a code saying the other one needs to be replaced. They work together. If you've had the tailpipe submerged I can gaurantee you you need to replace the post-catalyst.

Magiksreal

In my '95 with one sensor, I disconnected the wiring, then used a dremmel to cut it down to where my deep socket would fit.

Sprayed liberally with pb blaster, and then, I grabbed my BFRatchet and took it out.

Total time = 20min

If you can't be good, be good at it!

94JeepCherokeeMan

Only got one O2 sensor dude. Thanks for all the suggestions! I'll get on it right after the coolant flush and the suspension bushings... Gotta figure out what my new *clunk* is, too.

tjwalker

There is a little difference in one of the electrical specs on the Bosch oxygen sensor for the 4.0, compared to the NTK. (heater circuit)

You are correct in that the NTK is the OEM supplier to Jeep. For that reason, NTK is the brand that I install and recommend.

I'm a pretty big Bosch fan, but because some (not all) have had trouble with them, I don't install their oxygen sensors in the 4.0 engine.