My cars an Oxygen Sensor Killer!

[lazza44]

Either my car kills o2 sensors or it has something to do with my extractors or maybe something else. Since I installed my extractors about 1 year ago, I have had problems with my o2 sensor/s. I used the correct sensor friendly sealant. Anyway I first replaced the o2 sensor about 2 months after I got extractors due engine light/fault code. Then after about 3 weeks the engine light came on again and keep coming on at random. I was fed up so I took it to an auto elec and they told me was nothing wrong with it. I didn't believe them so I replaced it with another new one and that has lasted about 4 months up until now the dreaded engine warning light is coming on again and leaving fault code 13
By the way I have been resetting the computer correclty.

What could be the problem? I'm pretty sure the wiring is fine.

Someone please shed some light. I'm over it

[VNPOWER]

dont quote me, but from memory i think a few people with aftermarket extractors have this issue.

[potshots007]

could it be a bad earthing problem, is it a single wire sensor? if it is they earth through the manifold and to the block of the engine.

[88GreenVN]

Check the connector - I had to had wire mine in to fix the problem.

[lazza44]

its a series 2 so its a 2 wire sensor. so 88green what do you mean by wire mine in?

[fitzy2005]

exactly what oxygen sensor code are you getting, code 13 no signal etc, exhuast leaks and vacuum leaks and map sensors play around with the oxygen sensor and give weird codes

[88GreenVN]

its a series 2 so its a 2 wire sensor. so 88green what do you mean by wire mine in?

My O2 sensor connector eg after putting a new sensor in the connector failed. So I cut it out and put a crimp on it - works fine now. So it was a bad earth/connection at that point. Dont know if that helps you.

[lazza44]

Yeh I get code 13 only. How do you check for vacuum leaks?

[fitzy2005]

normally it would display error 36 or something, but since your getting the no signal error, check your wiring/connecters maybe

[88GreenVN]

Yeh I get code 13 only.

Error 13 = Open Circuit. - Same error I had after replacing the o2 sensor!

= bad connection somewhere.

[immortality]

does this car use a lot of fuel? excessivefuel in the exhaust can contaminate the o2 sensor. i'd also be looking at the wiring too as this sound more reasonable

[fitzy2005]

if it was an excessive fuel problem u'd get the Oxygen Sensor Lean/Rich problem most likely

[vt1538]

Code 13 can come up cause the sensor isnt getting up to temp in the extractors. Wire in a later model three or four wire sensor. Since these are heated it should fix your problem.

[lazza44]

My car is reasonable on fuel. About 12L/100k mainly city driving. I think il play around with the socket/plug first. I dont really want to chop the socket off though.

[88GreenVN]

Try stuffing a bit of wire in between the unplugged connector - (thats what I did) to confirm the plug is faulty. The car ran fine with a bit of wire in it so I cut the plug out and crimped it up.

[14secvp]

Crimping might sound bad but I just bought a new O2 sensor today and it says to cut the old sensor wires and crimp the wires to the new sensor with the supplied crimps must be a universal fit bosch sensor hope its the right one.

[Not_An_Abba_Fan]

The only difference between a genuine sensor and a universal one is the plug. As long as the threads and the number of wires are the same it is the same. Bosch list about 6 sensors for 100 cars. I would say you have a connection issue. We had this problem sometimes fitting extractors because we unplugged the sensor and reconnected it, there would be crap on the plug so it wouldn't earth properly. We just cut the wires and soldered them. Makes it a harder job to replace the next time but it was a permanent fix.