o2 sensor failure symptoms

[whatchain]

I have a 01 v7 imprezza non turbo and It has a very strong smell of petrol coming from the exhaust. Smells like it's running very rich. I was wondering can this be a direct result from a failed o2 sensor? The car also hesitates abit when accerlation. If it is the o2 sensor, would it be better to get a 2nd hand one or new dense or even a Bosch? I heard a new denso is like $450!? Even better if anyone here sells them or know someone selling one, I could be interested. In chch

Thanks

[lachlan]

look else where . o2 sensor has nothing to do with acceleration .

[Zenki]

Faulty O2 sensor can cause sluggish/rough running.

Subaru OE Bosch/Denso O2 sensors are USD $50-$100 off Amazon. Probably cheaper off Partsouq.

[whatchain]

i've changed new fuel filter, cleaned throttle body, cleaned afm and it seems to have made it a little better but not completely sorted. what else should i check? what would cause a strong petrol smell from exhaust?

[johnny5]

Does the front afr sensor have something to do with this

[whatchain]

i was told by frazer at m45 that the v7 is common to have fail afr sensor, i wanted to check everything i can before splashing out on one of those because they not cheap. also no point buying and turns out thats not te issue

[johnny5]

theres a way to test them with a multi meter but partsouq got em cheaper than anywhere else