Oil Pressure Switch
Posted 19 October 2007 - 01:26 PM
I have had a look for the "Oil Gallery Opoening" and it looks like there is something like a switch there, but with one terminal.
The instructions go on about a normally closed (s) which i dont know where that is, or a normally open (i)
Does this mean i need not fit my new one, as it looks like there is an oil switch present, or do i need to fit my new one? Its very confusing!
My new one looks different to the old, and im just trying to work out in my head how it all fits...
Any advice welcome!!
Im trying to get pics up but cam not connecting!
Posted 19 October 2007 - 03:23 PM
Posted 19 October 2007 - 03:46 PM
The idea in using one is to switch off the pump for safety in the event of a crash or other failure that stopped the engine even if the ignition is still on.
The mini's switch is normally closed meaning when the engine is running oil pressure opens the contacts so turning the warning light off.
You could use either type of switch (open or closed) by using a relay.
To find out what type the new switch is just rig up a simple bulb circuit if the light stays on it's normally closed.
Edited by Ethel, 19 October 2007 - 03:51 PM.
Posted 19 October 2007 - 04:04 PM
Posted 20 October 2007 - 07:55 PM
At the moment, i can have the engine turn over, but no pump, or i can have pump (when twisting key on start) but no engine turning....
Running the live off of the starter solenoid, and the 2nd live off the ignition from the oil pressure warning light feed....
in theory this should allow the pump to pump when cranking to start, and then run when pressure is built (engine running)
At the moment, i could wire it so that i have the pump running when the 2nd click of the key is turned, but that doesnt allow a cut out, so i would need an inertia switch that i cant source...
Im going to have my friend have a look at it with a multi meter and go from there... The t-peice that is spoken of, anyone got a part number, so i can get an idea of what you reccomend???
If you think that is a better idea, i would rather do that!
Thanks for your help on this very badly explained (on my part) subject!
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