Oil pressure sensor - question????

[crazyfrog]

Hello GS500 world !  . This site is great.

I have a problem with my GS500  - 1991 - GM51B - with 55.000 Km . The oil pressure light  flicker on idle speed.

This is very strange because:

1 - everything it is ok - oil light stay off even with 1000rmp or less. This happened  with an old (aprox. 4000 km) oil.
2 – I changed the oil with 15w50 – because here (in Romania - Bucharest) the day temperature it is high (40C)
3 – After 30 Km the oil pressure light  come ON at the idle speed (aprox 1500 rmp)
4 – next day in the morning I start the engine and the oil pressure light come OFF (after start the engine – this is normal). The light continues to stay OFF even with worm engine
5 – after 150Km – the oil pressure light come ON at the idle speed
6 – I change the oil with 10w40 (this type of oil I use before this happened ) – the oil pressure light come ON at the idle speed
7 – Because I suspect the oil pressure sensor , I took a oil pressure sensor from a GS500-1993(that do not have problems with oil pressure light) -> the oil pressure light stay OFF at the idle speed(even 1000rpm). I was happy J .
So the second step was to put my sensor on that GS500-1993 bike. On that bike (with my oil pressure sensor)  the oil pressure continues to stay OFF even at 1000rmp.

Another thing  that I observe:
My oil pressure sensor:  < p .25 >
On the GS500-1993    :  < p .15 >

So, the oil pressure sensors differs!!!!!!  And my oil pressure light stay OFF(at idle) with  oil pressure sensor type < p .15 >!!!!

Is this normal ?

Why the pressure sensor differs form one bike to another ?


10x