Posted by Dave HillDave Hill
on November 7, 2012, 9:17 pm, in reply to "Re: vauxhall astra 1.4petrol. destroying no1 o2 sensors."
Common fault this guys.
The oil pressure switch leaks & forces oil into the harness, which terminates at the O2 sensors.
New sensors & oil pressure switch required & some imaginative thinking about how to prevent the remaining oil in the harness from ruining further sensors.
I usually pop the orange rubber seal out of the multiplug so that the oil can seep away.
Plus warn your customer that you can not guarantee the sensors, as they are not designed to withstand oil contamination.
The official repair would require a replacement engine harness I suspect.
