ok thx so 22mm is same as 7/8 bit weirdYou can purchase sockets that are designed to remove O2 sensors. The size is usually 7/8" or 22mm.
22mm Universal O2 Oxygen Sensor Socket Tool 1/2" Square Drive Removal Tool A | eBay
Adjustable Gland Nut Wrench 7463 Small Pin Spanner Tools for Hydraulic OZ. Oxygen sensor socket 22mm 1/2" driver removal Lambda installation tool 8mm cutout. 2 SETS O2 Oxygen Sensor Bung Weld On w/Plug & Washer M18x1.5mm AU.www.ebay.com.au
ok thanks i don't think i be able slide the plug thru the opening but it is a thoughtThe plug on the Berlingo one actually fitted through the ring end of a 7/8" combination spanner. So I just theaded the wire through and slid the spanner down onto the sensor.
The Berlingo sensor is pretty easy to get to though.
thank you why did the top sensor go then few days after the bottom sensor went is something not rightA ring spanner won't fit over the plug. Get the proper tool, and be prepared to find it hard to remove.
A reputable brand isn't too expensive, and a good tool place will carry them.
thank youThe upper one detected a fueling fault. The lower second one may now have been damaged by contamination. If the fault persists you can be up for a cat converter, at great expense. Changing sensors doesn't cure the original problem.
It isn't a bad idea to change a pair. Clean the manifold thread (possibly with a tap) and torque the new units in correctly or they may be damaged. Do not over-tighten. The thread may need a touch of copper grease, but don't contaminate the sensor.