Re: 4kq low oil pressure light- help!

["Robert Dalton" <rpdalton@onebox.com>]

Eric,

I think the oil pressure warning ststem on my 1990
Audi 100 is very intermittant.  I've replaced the
switch, but it wasn't the problem.  It's probably
a bad connection in the autocheck computer that
monitors the pressure sensros (two in my case).
 Sharp bumps activate the oil warning beeper and
symbol.  However, the meter shows great oil pressure.
 I guess you don't have the meter on yours, but
they sure are handy in a situation like this. 
One of these days I'll take the instrument cluster
out and try to fix the intermittant or at least
add a defeat switch to the beeper to shut it off.
 I'm not looking forward to taking the air bag
and steering wheel off to get the cluster out.
Does all this work bond us to our Audis?

-- 
Robert Dalton
rpdalton@onebox.com - email
(703) 234-3969 x1020 - voicemail/fax



---- "Erik Addy" <erik@aero.und.edu> wrote:
> Car: '85 4kq, apx 140k miles> 
> 
Situation:  I'm on about the 200th mile of a
> 300-odd mile trip on the> 
interstate> 
when the low oil pressure light/buzzer goes off.
> DOH!  First reaction was to> 
put> 
in the clutch, and the light went out.  I was
> about to get off for> 
gas anyway, so off I go.  Oil full, light stayed
> off for the rest of the> 
trip.> 
Got home and did an oil change, as it was due
> (Mann filter/10w30 Mobile 1).> 
> 
Light comes on every drive now.  Only when cruising
> between 2-3k rpm.  If I> 
lug> 
it in 5th at 40mph, no light.  I can steadily
> watch the light start to glow,> 
and> 
get brighter till it suddenly buzzes.  If I put
> the clutch in (and let off> 
the gas)> 
light goes out, then repeats a minute later.
>  If I put the clutch in and> 
keep the> 
revs the same with the gas, light stays on.> 
> 
My gut feeling:  Electrical problem, it _is_
> an Audi, you know (and you> 
thought> 
Lucas was the only prince of darkness).  Anyway,
> I think electrical becuse I> 
get> 
no lifter noise, no increase in oil temps, and
> everything generally seems> 
fine> 
except the damn light.  Plus, why would the light
> go out when the RPM's> 
_decrease_?> 
> 
Possible cause:  I did remove the tray assemble
> below the steering wheel to> 
run some> 
speaker wire for new door speakers, perhaps I
> loosened something?  Still,> 
didn't start> 
untill 200miles into trip...> 
> 
Request:  Any troubleshooting tips.  It's cold
> outside, and I am really> 
busy, so> 
anything that helps me find an awnser sooner
> would be much appreciated.> 
> 
Thanks,> 
> 
Erik Addy> 
erik@aero.und.edu> 
Grand Forks, ND (and Minneapolis, MN)> 
701.787.0450> 
> 
89 200tq       PP-ASEL (soon Comm-MSEL-IR)> 
85 4000q       SPC-4, NDANG, formerly USMCR> 
QCUSA> 
> 


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