Oil Pressure Switch Design

[Bakes100 20 1 Cars]

Hi,

 

Simple question, I've got two oil pressure switches...

 

One is normally open when tested - no circuit through sensor when car is switched off.

 

The other one is normally closed - provides a circuit through sensor when the car is switched off.

 

Does anyone know which is the correct one for a 1990 1.9 GTi?

 

Thanks

 

Stuart

Edited February 22, 2017 by Bakes100

[welshpug 1,666]

normally closed with no pressure is standard, i.e if there is continuity there's no oil pressure, pressure set to 1 bar.

[Anthony 1,003]

pressure set to 1 bar.

Are the OE ones that high? Most of the pattern replacements are around the 0.5-0.6 bar mark.

[Bakes100 20 1 Cars]

Thanks all sorted now. The one ive brought is 0.5 bar (+/- 0.08) which appears pretty typical

Edited March 1, 2017 by Bakes100