02 sensor on cat bent!!??!!

[nicholas4434]

hi just had a wepr sidwinder fitted to my car but when i put my pipes back for the fmic i bent the sensor that goes in the downpipe! is this bad????? want to know if it will affect it so i can buy one soon as poss. if it aint important i wont bother.

cheers nick

 

[Jay]

With the movement of the engine during driving it is hard to give a definite answer. My guess is it's an Autobahn kit where the piping goes over the manifold?

If so it may be wise to reroute your FMIC piping to suit. It's not the most direct pipework anyways so you will see performance gains by doing this.

 

[nicholas4434]

im guna do that then. were can i get the pipeing tho? it is the autobahn one ive got. should i buy a new sensor or will it be ok?

 

[Adam_Glanza]

aslong as the wires arent broken it should be ok, if the sensor was busted it wud run dog rough

 

[nicholas4434]

aslong as the wires arent broken it should be ok, if the sensor was busted it wud run dog rough

wat d u mean by rough? sound rough or not ticking over nright n stuff? i heard a snaping noise when it bent but i think it was the ceramic bit in the sensor?

 

[Jay]

aslong as the wires arent broken it should be ok, if the sensor was busted it wud run dog rough

As Adam says the sensor should function grand so long as the wiring is not broken and the exhaust is not leaking at the threads. Faulty lambda probes don't give immediately evident rough idling. It will depend on the operating conditions of the vehicle to be honest.

 

[Sheldon]

im running without a lambda... is that bad?

 

[Adam_Glanza]

yea thats true but the emissions would be all over the place

 

[nicholas4434]

how long will it take to notice the roughnes? ive had the exhaust on a week n it seems ok so far?

 

[Jay]

im running without a lambda... is that bad?

The lambda measures air and fuel in the exhaust gases. Without it the ecu will not know how rich or lean your engine is running and as you can imagine this can be unhealthy.

If you have disconnected the probe altogether the ecu will realise it isn't getting a proper signal and use a set value in place of the readings it needs. This set value will be rich under most conditions but may not cover certain senarios such as high revs/high speed/engine problems.

Well worth noting that lambda probes die due to heat and exposure to fuel so a lot of us may not realise we are overdue a fresh unit.

 

[Adam_Glanza]

if its broken then im pretty sure there will be a fault code in the system, well there definetly would be in more recent cars, try do a flash code readout

 

[nicholas4434]

wats a flas code readout? so do u all think i should buy a new unit then? because i will buy one asap if i need one?