Re: Putting in my own oil temp sensor

[Tony Lum <tlum@flash.net>]

At 11:35 AM 10/21/97 -0400, you wrote:
>How do I install an oil temp sensor in my car? How much do the parts cost?
>What about an oil pressure gauge? I would like to keep the dummy lights.
>
>Steve
>'84  5ksT 1.8 bar
>
>
>
Steve, the stock position for an Audi oil temp sender is in the oil
pressure relief valve, which is a large looking bolt to the left side of
the oil pump (just behind the big pulley).  The old style, which used
smaller threads, was used on '80-83 5000 turbos and uses a 170 deg C gauge.
 The new style which seems to have a much larger thread size is used on
4000 quattros.  Haven't looked at 84s but my 87 uses the wide style.  Oil
pressure gauge requires a sender which replaces the stock oil pressure
switch.  The correct one made by VDO includes a switch for the idiot light.
 Gauge reads 0-150 psi (or 10 bar). New sender and gauge should run < $100.
 Older stock 4000Ss have both and you might be able to scrounge one up for
< $20.  Careful on which switch you replace.  Most Audis have 2-a 1.8bar
which closes at pressure, and a 0.3bar which is closed at low psi oil
pressure.  If you use a 4000S sender, replace the white (1.8) switch.  The
stock oil pressure gauge reads 0-80 psi (or 5 bar), so it will read full
scale mostly when normal.  BTW, I recall VDO makes an oil temp sender that
fits in the oil drain bolt, but I don't know the p/n.

HTH,
Tony


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Tony Lum
Fremont, California U.S.A

Audi Owner/Operator/Mechanic by Necessity ;-)

1987 5000S Turbo Quattro
1985 4000CS Quattro
1980 5000S Sedan
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