84 4k oil pressure light

[Bares, Vittorio]

I went out and bought both - I did find that according to the ETKA
diagram, the existing high and low pressure switches had been installed
in opposite locations - the wires were correct though. I've reversed
them so that the high pressure is in the lower position and the low
pressure in the higher position.

Don't know if that would make a difference - but the car is no longer
experiencing the oil pressure warning light issue. I assume they are
both sensing an oil passage of some sort?

One new issue is that the water temp gauge is flaky - shows just a
little temperature, climbs to just above cold, then drops to nothing
again - When it does this - the car will stumble a little on 1st gear
start up. I suspect the water temp sender on the cooling hose flange
attached to the block. 

However, there's also a temp sensor on the same flange below that and
one on the radiator. I think the one on the radiator is for the fan -
not sure what the one on the flange is for?

Thanks,

Vittorio -
 

-----Original Message-----
From: Huw Powell [mailto:audi at humanspeakers.com] 
Sent: Friday, December 12, 2008 2:46 AM
To: Tom Love
Cc: Tony Hoffman; Bares, Vittorio; quattro at audifans.com
Subject: Re: 84 4k oil pressure light

Seems like overkill.  Yes, sometimes they go bad.  But rarely, really. 
The one in question is on a 24 year old car, not exactly a "rapid"
failure.

The ones are my coupe are vintage 1982 and work fine.  The ones on my 
90Q are vintage 1989 and work fine.  The system does tell me when I'm 
two quarts low on hard corners, which is nice, I guess.

Tom Love wrote:
> While you are there, do them both. Crazy not to. Actually they are so 
> inexpensive I can't understand not doing them every couple of years.
Saves 
> your underwear!
> 
> ----- Original Message ----- 
> From: "Tony Hoffman" <auditony at gmail.com>
> To: "Bares, Vittorio" <Vittorio.Bares at nuance.com>
> Cc: <quattro at audifans.com>
> Sent: Thursday, December 11, 2008 7:48 PM
> Subject: Re: 84 4k oil pressure light
> 
> 
>> I've had the same problem with two 1.8 4000's years ago. In both
>> cases, the 1.8 bar sender was going bad. Also, in both cases, it was
>> somewhat intermittent, although the '85 kept getting more frequently
>> until I replaced the switch.
>>
>> Tony
>>
>> On Thu, Dec 11, 2008 at 8:02 PM, Bares, Vittorio
>> <Vittorio.Bares at nuance.com> wrote:
>>> That's good advice.
>>>
>>> Interestingly enough, I took it out again today, this time, no
issues,
>>> no oil light.
>>>
>>> Its been sitting a long time, there must be some level of corrosion
on
>>> all the electricals as the more I drive it, the more stuff, just
kinda -
>>> wakes up.
>>>
>>> For instance, when I first took it down the road, neither left or
right
>>> blinker worked. Then, after a few attempts, the left blinker started
>>> working, but not the right. After a few more tries, they both
worked,
>>> but the right blinker had a fast blink, indicating a bulb or
something.
>>> A few more miles, now they both work perfectly.
>>>
>>> I'll change out the switches anyway - oil pressure is not something
I'd
>>> like to trifle with, esp since they are cheap replacement parts.
>>>
>>> Thanks all...
>>>
>>> Vittorio -
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-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/