Can you swap these without major work? Are they accesable with the engine, turbos etc still in the car?

Yep,but you need deep socket or crows-foot,there a pain! :o

They are within the means of a DIY mechanic, its just a case of unplugging the wiring unscrewing the old ones, screwing new ones in and reconnect wiring, the difficult part is they are hard to reach and in there tight, you will need a 17mm or 19mm crowsfoot, cant remember which size now but a search will tell you.

22mm ;)

22mm ;)

There you go, age is making my memory fade ;)

swapped the one on my 200 but that was pretty easy to get to. Think ive got a lazy left hand one, but it makes most sense to swap both of them while im arsing about in there

Couldn't get mine out even with the correct socket. once i got the 22mm socket on it there was no room for the extension bar to put on the top. Will be leaving it till i get to southwestz if they have time to change it for me.

I needed various UJs and extension bars to get socket drive out of the engine bay, then a 6' long pipe on the ratchet to give the leverage.

blimey! you guys go from (err) under the zed or can you get at the o2 sensors from ontop? ive searched but havent really found a clear guide on swapping these yet..

 

Ona different note how much did people pay for a set of o2 sensors? things to get new or will ones of a breaker do?

From the top- at least you can almost see what you're doing :)

 

Try Andy P's site, I'm sure I got the instructions from a link on his site.

Oh, and I got mine from Z-Tech. Can't remember exact price- £70-ish each I think.

thanks guys, and new ones the way forward or it ok to get some from guys breaking their zeds?