BDGile

Hey everyone,

I am looking for bank 1 sensor 1 in a 1996 4.0. Is there just one sensor before the cat and one after or is there still two before? Maybe a picture or diagram would really help. Thanks in advance!

RTorrez1

Yes Sir, Unless you have the Calif. emissions then you have a total of four o2 sensors.

BDGile

So this is it?

Right next to the oil pan?

RTorrez1

That is the one you are looking for. On the down pipe.

CCKen

Or twenty O2 Sensors.

PocketsEmpty

I thought only the 2000-2001 models had 4?

BDGile

Thanks! Any tips on getting the old one off? Penetrating oil? Impact driver?

PocketsEmpty

Start up the jeep and let it run awhile, long enough for the exhaust to get hot, then crack that sucker with a 7/8" box-end wrench. Might take some elbow grease.

CCKen

2000 California has 4, Federal emissions has 2. 2001 50 States has 4,

He has a 1996.

Just pulling your leg about twenty.

CCKen

O'reilly and Advance auto parts rents the special sockets to remove/install O2S's.

Harky1949

Your auto parts supplier may have more than one sensor for that model year - an NGK or Bosch. Go with the NGK...it's the OEM replacement. I put a couple of Bosch in my 96 and within a month the engine was running like crap after it warmed up. Long story short, the NGK's fixed the problem and I have been fine for 2 years so far. I've read in older threads on this forum that the NGK's are preferred.

PocketsEmpty

Also, you can get them for a much cheaper price on RockAuto.com. Saved me a bunch of money.

Damn California. That's a state I'll never live in.