o2 sensor maybe??

[Jay_Whatman]

G'day Fellas,
The ol' girl started running rough a few days ago, it's only happening occasionly but never the less needs to be fixed.
It seems to be missing through the entire rev range. When it hesitates I give a boot and it clears up and runs fine.
I replaced this arvo the air filter, oil breather, and the plugs & leads. Haven't been able to find any leaks around the mainfold (though I did find a small one around the muffler which I sealed with exhaust cement) or in any of the other hoses. Will replace the fuel filter tomorrow, any other suggestions?

[Gojeep]

Look at your throttle body. If any soot inside it will most likely be the problem. Buy some throttle body cleaner and spray inside to clean it. Make sure you can spray through the hole above your butterfly until it comes out clean out the other end.
Also get some Nulon injector cleaner and drop that completely into your tank. I made mine stronger but tipping into only a 1/2 tank and cleared up a leaking injector I had causing a rough idle.

[DazzaXJ96]

Sounds very similar to my 02 sensor when it went. Gojeeps suggestion is a cheap check but otherwise you might find yourself replacing everything (like me) before you finally get to the 02's. They are $75 each and if they have never been done I highly recommend it..

[Jay_Whatman]

Thanks fellas, still no joy though. So by the end of today I have replaced the rubber fuel line, fuel filter, plugs, leads, rotor, dizzy cap, air filter oil breather, punched two cans of throttle body cleaner through the sucker.
Went to GOJEEPS website for the first time was amazed to see what was on there. Came across the fault reading drill so I went on of on off and on and lone behold code 12. code 21. and code 55. So I disconnected the battery when I replaced the fuel line and filter, code 21. for what I thought was the problem originally the o2 sensor, and 55.

So any recommendations as to where I should shop for the o2 sensors? I have one in the upper exhaust and one in the cat. Is the one in the cat able to be disconnected?

DazzaXJ96 posted this link for O2 sensors a while ago.
http://www.injectacarb.com.au/oxygen...292ff38cbc474a

[Jay_Whatman]

Ah, yeah spot on might go out there early next week and grab em. cheers.

[Jay_Whatman]

Brought a Universal o2 sensor from AutoPro this morn stung me $89, but they only had the one.
Replaced the one in the cat cause that seemed to be the worst off, cleaned the other one with carby cleaner, toothbrush and emery paper, reset the ECU, and now I can't remember the last time it ran so well.
So thanks to everybody for there help.