The black sensor goes between the pushrod tubes. It is a normally closed
sensor that opens when the oil pressure is above the set point. The grey
sensor goes near the crank pulley. It is the normally open sensor that
completes the circuit when the oil pressure goes above the set point (.9
Bar). The locations are important. The port near the pulley is directly off
the oil pump, a high pressure point in the system. The one between the push
rods is off of the cam bearings. This is after the cooler, filter, etc.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Jim Felder
Sent: Saturday, July 18, 2009 5:46 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Stopping the oil buzzer under the dash

Kim, if it had low oil pressure it would not be exhibiting the 2200
syndrome. It can idle all day, or drive as far as you want without
hitting 2200 rpm, and then when it does, BZZZZZZZ.

Yes I believe I did get them in the right place. I put the black one
behind the water pump and the grey one under the engine tin. If a wire
has come loose it will do the same thing. I had that happen on my 90.

I just changed oil today, used 20W50 of course.

Jim

On Sat, Jul 18, 2009 at 4:21 PM, Kim Brennan<kimbrennan@mac.com> wrote:
> Depends. How do you know it doesn't have low oil pressure? Did you put the
> right oil pressure sensor into the right place? They aren't the same. Did
> you use the right type of oil at the last oil change? 10w30 won't cut it.
> Use 20w50.
>
> On Jul 18, 2009, at 5:11 PM, Jim Felder wrote:
>
>> I've decided to pull the oil buzzer in my daughter's 91 while I figure
>> out that the real problem is. It doesn't have low oil pressure, but it
>> exhibiting the 2200 rpm syndrome where after it hits that engine speed
>> the buzzer stays on. The light blinks continuously no matter what the
>> car is doing. It's been doing this for hundreds of miles. I just
>> swapped out both sensors... what a job... no change.
>>
>> Can anyone tell me how to just stop the infernal buzzing?
>>
>> Thanks,
>>
>> Jim
>
>