I am having to change my exhaust including the catalystic converters and cannot get the sensors out from them. They are a peculiar size and do not fit well in the metric spanner chosen and have now had to try stilsons, which is chewing them up. Has anyone got some sort of novel way of getting these b******s out, without damaging them, or are new ones reasonably priced and easy to fit. Do they connect into the ECU ??

prolly cost about the same as decats ;)

I dare not decat it with the mileage, the turbos would definitely give up.

I dare not decat it with the mileage, the turbos would definitely give up.

 

It'll be fine ;) Its only the odd zed that has horror stories, not the norm.

hehe fair play... have you butchered them beyond repair now? if not the first thing i would do is give them a good coat of plus gas/wd40 and leave em over night, then youll need a good quality, well fitting spanner (cheap spanners will spread and damage them further). i would give the cat around the sensor a bloody good beating with a hammer to try and loosen the corrosion, spray some more... if you have the facilities, heat up the housing of the sensor and then spray the sensor itself with freezer spray, this might help loosen it that little bit more. i also find with troublesome things like this that a tiny 'nip up' (tighten) will help break the thread lose, then undo...

 

otherwise its a wanted post from user or from mike feeney :)

 

Joel

and you can always garuntee the moleys will finish off what the spanner couldnt ;)

do you mean the cat temp sensors? if so you may have to cut them, as they will be useless with after market pipes

 

or do you mean02? :)

http://cgi.ebay.co.uk/90-96-NISSAN-300ZX-TURBO-DECAT-DE-CAT-DOWNPIPE-EXHAUST_W0QQitemZ220096230909QQcategoryZ38786QQssPageNameZWDVWQQrdZ1QQcmdZViewItem ;) and jobs a guddun

i think he has new downpipes already so no need unless he wants elbows seperate.

http://cgi.ebay.co.uk/90-96-NISSAN-300ZX-TURBO-DECAT-DE-CAT-DOWNPIPE-EXHAUST_W0QQitemZ220096230909QQcategoryZ38786QQssPageNameZWDVWQQrdZ1QQcmdZViewItem ;) and jobs a guddun

 

These are in the group buy at £129 delivered i believe.

I want to replace the cats, which I already have, although I do have a decat front end. As stated before, my car has done a fairly high mileage (70K) and feel that to decat now would probably lead to the turbos giving up the ghost.I have left them soaking in some release fluid and will try some heat on them whilst having a graunch this weekend. Will the car run without these sensors, and are they easy to change if I feck 'em up getting them out.

John, All they do is connect to the cat overheat light on the dash. A lot of zed's (especially all those that are decatted) are running around with these disconnected.

 

If you cant get them off I would'nt worry, removing/disconecting is fine, they have no connection to the ECU.

John, All they do is connect to the cat overheat light on the dash. A lot of zed's (especially all those that are decatted) are running around with these disconnected.

 

If you cant get them off I would'nt worry, removing/disconecting is fine, they have no connection to the ECU.

 

 

Thanks David, I ended up slicing through the boss on the cat and inserting a wide chisel, they gave in gently and are now installed in the new (secondhand) cats. The rest of the exhaust is a Scorpion and sounds great. Hoping to get to Castle Combe with it in May. John