You should have the .9 bar sensor near the oil pump.  Some dealers will
sell you the 1.8 or 1.6 instead.  BTDT

Larry A.

william urban wrote:
>
> Hi,
>
> I used to be on this list 3 or 4 years ago and thought I would get back
> on mainly because of a problem  I'm having with my '91 Carat Vanagon.
> Hopefully somebody knows the solution to this problem.
>
> A few months ago I discovered that oil was leaking out of my van at an
> alarming rate. It was leaking so bad that it would cover the back
> window. A local general car repair  place told me it was the oil pump
> gasket. They quoted me an arm an a leg so I decided I would try to fix
> it myself and put it on the back burner.
>
> When I finally got around to working on it I discovered that the oil
> leak was at the oil pressure sending unit by the oil filter. So I
> changed the fitting, gasket, and the sending unit. The leak stopped but
> then after driving 10-20 miles the oil light/ buzzer started coming on
> at 2200 rpm.
>
>  I bought another sending unit(genuine VW) with the same result. I
> changed the other sending unit(VW) by the pushrods and also the oil
> cooler gasket. I did some of the procedures in the Bentley(
> disconnecting the high pressure unit-no ground and disconnectng the low
> pressure unit and grounding it and they worked). I swapped out the
> dynamic oil pressure control unit behind the speedometer with one out of
> a '91 fox but that didn't help.
> I changed the oil and filter. I currently have Castrol sae 40 and a
> genuine VW oil filter.
> I also changed out the oil pressure relief valve(spring,piston, and
> gasket). I checked the crankcase breather it's not clogged.
>
> This van has 122k on it. I've owned since 95k. It has an auto trans and
> the original 2.1. Before the oil leak problem the light never came on.
> Now I start it , the engine sounds normal, and it drives fine. After
> driving about 10 -20 miles highway speeds (55-70) if I let the rpm's hit
> 2100-2300 for 5-10 seconds the light/buzzer come on above that-OK ,
> below that-OK. It doesn't run hot or sound funny.
>
> Is my engine or oil pump shot or is there hopefully another solution?
> Sorry about the length of this posting but the details matter. Any
> helpful responses are greatly appreciated.
>
> Frustrated and desperate,
> Bill Urban
> Belleville, Illinois