Has anybody got any  bother with the 02 oxygen sensor on top of the cat i keep getting a fault light i was told to drill a 10mm hole down threw the cat will it solve the issue or should i buy a new sensor at 60 pounds 

I sure as hell wouldn’t drill the cat unless you want a big bill.

 

Are you using any fuel additives and have you checked the wiring?

If it is faulty,then you’ll probably see fuel economy improvements to pay it back quickly.

 

Also I assume coils etc have been checked too.

On 06/07/2020 at 23:50, cheezemonkhai said:

I sure as hell wouldn’t drill the cat unless you want a big bill.

 

Are you using any fuel additives and have you checked the wiring?

If it is faulty,then you’ll probably see fuel economy improvements to pay it back quickly.

 

Also I assume coils etc have been checked too.

Am affaird if i buy a new oxygen sensor and car still does the same how long does a sensor last or many miles can u do on them

I changed two in quick succession pre and post on a car around 100k.

 

They’re not too expensive from the after market suppliers.

Edited 8 July, 20205 yr by cheezemonkhai

34 minutes ago, cheezemonkhai said:

I changed two in quick succession pre and post on a car around 100k.

 

They’re not too expensive from the after market suppliers.

Aye can get one for 60 pounds ive took mines out a few times and cleaned it. It does a while but i think ill bite the bullet and buy a new one now how many miles are they supposed to last

No idea, I drive diesels, but unless you contaminate them with something in the fuel/oil etc, I would think a good while.

Take it the exhaust doesn’t have any holes near either sensor that shouldn’t be there?