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Hi. There has been some recent talk about OXS sensors,
specifically using (much more reasonably priced) Ford parts.
Someone recently mentioned that the sensor from a 5.0
Mustang would do fine... my question is will it be ok in my
(non-Q) 1985.5 4000s? I went to a Ford dealer & they told me
they needed to know the year, transmission, convertible or not,
etc. too determine the exact OXS sensor, & then still, there might
be two different types, & the only way to know is by looking.
(a fat one & a thin one... the one in my 4000s looks like the
I didn't get the imppression that they were very knowledgable,
so perhaps someone can tell me *which* one I should pick up...
Also, will I have to splice (not that this would be a problem),
or is it plug & play??? Are all OXS sensors calibrated the
same? If I have to splice, is there a difference between
the two white wires??? I am currently under the impression that
the white wires are for heating coils, and the black is the output.
And one final question... I recently bought this 4000s (now with
almost 78k) without knowing if the OXS sensor was ever replaced.
I have cold start trouble (wild oscillations till warm). I know
it could be a number of other things, such as the thermo time
switch, cold start valve, etc. While I will check these things
(they are easy enough to do...), I thought replacing the lambda
sensor would be prudent. The light was not on, but the dash was
loose when I bought it (I had to find the right screws in salvage)
so it looks like some fool reset the thing. Ohh yes my question...
is my thinking ok here? I sure (from the looks) that it is the
original sensor. I know in VW's where the thing is in the
manifold, they last like 60K. What about these guys that are
(the 3 wire ones) that are downstream 7 cooler... should I
even be concerned about this now & instead focus on other
parts involved in cold-start???
Sorry about being long-winded & thanks in advance...
PS at the ford place they told me... "these 3-wire things are
*VERY* expensive... it'll be around $50-$60."
I had to laugh...
($180 at me local Audi sodimizer..)