Ethylene glycol & oxy sensors

[Mike Poulson]

When I worked for Ford (dealerships) I did loads of 3.8l head gaskets. You
could always tell if they were blown by looking at the O2 sensors. The dye
from the coolant would turn them green. We used to order replacement O2
sensors for every job until we did a little experiment to see if it was
really the coolant that was contaminating the platinum/paladium or if it was
something else. We did a few head jobs without using any type of solvent to
clean the heads/ deck etc and reinstalled the green O2 sensors. They all
worked so we figured that it was the chlorine or other chemicals in the
solvents that was ruining them. After that, there was no more replacing the
sensors. Saved us a few minutes on a waranty job.

Mike aka Terrible Ted.

From: "Chris Wilson"
Subject: Re: Ethylene glycol & oxy sensors


> Sunday, March 17, 2002, 12:23:08 AM, you wrote:
>
>
> > Any hope of either my NB or WB sensors surviving a blown head gasket?
They
> > got a pretty good dose of coolant; wondering about chemical damage or
> > thermal cracking, etc.
>
> My Bosch (Motec wide band readout kit supplied) sensor has survived
> various engine blow ups on the dyno, and a dramatic on track RX-7 turbo
> explosion that happened at WOT and dumped half the sump contents down
> the pipe onto the O2 sensor. Still works fine, but I wonder how many
> lives it now has left :-)
>
>
>
> --
> Best regards,
>  Chris Wilson
mailto:chris at formula3.freeserve.co.uk
>                                        http://www.formula3.freeserve.co.uk
>
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