Hi all, im a newbie Cherokee owner in SA. I have a 1996 (I think) 4.0l High Output (whatever that means). I am trying to find support but alas only the agents in this country.
My jeep has no catalytic converter (I know...I know..but thats how I bought it...not a requirement in this country) and I cant seem to find the oxygen sensor. The reason im looking for it is because this jeep runs rich constantly, and if I drive politely (mind you...if I drive like a maniac it makes no difference either) I get 6km per liter petrol.
Can any of you guys help?

 

if you're looking at the front of the jeep, it should be on the exhaust pipe on the right hand side. it sticks right out and is pretty easy to get to. as far as i know, all jeeps only have one o2 sensor and they're all in the same spot. it's before the cat so you should definitely have one.

 

A 96 XJ with a high output 4.0 litre Has two (2), the upsrteam is located in the front of the exhaust near the exhaust manifold. The down stream is located between the cat converter and muffler. Hopefully the connectors are stll there, they will be black or grey and a round shape. The upstream runs off of the engine harness and down behind the P/S pump,or clipped to the back of the intake manifold(i've seen them both ways) The down stream is clipped to the top of the T-case.

 

learning something new everyday lol

 

Also check the operating temp. If it is running cool, it will run rich. It needs a 195 degree thermostat.

 

you need to put a cat back on or get a o2 simulator for the rear....

 

Where are the O2 sensors on an 01 XJ? I think I need to replace mine.

 

should be the same place as the 96.

 

you have some right under the header and some behind the cat if i remeber correctly.......

 

Yep 96 and newer are ODBII so 2 O2 sensors. 95 and older are ODBI so only 1 sensor..

 

Which sensor should be replaced first? I checked prices and they seemed pretty pricey.

 

Well if you have ODBII take it to a parts store that will scan for free and find out which one is bad. Then replace that one.

 

Replace the one in front of the Cat. That is the one that determines your fruel mixture.

 

Thanks!

 

WOW! Thanks guys! I wasnt so sure if I would get any replies...nice to know guys out there are prepared to help Very limited knowledge her in SA (well.....besides the agents). I will definitely try find this sucker on my jeep today. I have soooo many questions, I hope I dont bore you guys. I bought this jeep not because she is a jeep but rather she fitted in with my limited budget (R47 000) divide by 9 I think and youll get the dollar equivalent. But since then I have really fallen in love with her (as kinky as that sounds, im sure you know what im talking about) she has 265000km on the clock, so yes, she needs a bit of work. I will try post pics soon. Is there any way of knowing if she is running rich or lean without a gas analiser?