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Posted by: starman Apr 13 2009, 11:16 PM

Hii
I finally got the engine running in my 914 1.7. ive been through all the electric, and everything should be working, but what about the oil lamp? It a green lamp, normally it red and lights until the engine is running with oil presure, when does it light on a 914? I testet the light by grounding the wire by the indicator on the engine . Then it lights up, there is no light before or after the engine started. Ive just changed the oil, and the car has been idle for a year, but i think it was running long enough to activate the pressure switch and get the oil through the engine. (i filled the filter before mounting it)

Posted by: ejm Apr 14 2009, 04:17 AM

The OP switch closes the circuit to ground when there is no pressure. If you ground the wire at the switch and the light works you have a bad switch.

Posted by: Spoke Apr 14 2009, 05:51 AM

Test your switch with an ohmmeter with the engine off. Connect one lead to the switch and the other to battery NEG. You should read 0 to a couple of ohms. If higher reading is observed, the oil pressure sender unit is bad and needs replaced.

Posted by: CliffBraun Apr 14 2009, 09:37 AM

Yup, mine comes on with the key and turns off as the engine starts(or after a bit of cranking ). Incidentally, from what I've heard it's more of a "you're fucked" light than anything. The pressure threshold is low enough that bad things are already happening if it comes on while you're running.

Posted by: ConeDodger Apr 14 2009, 10:10 AM

4-8 psi IIRC. If it comes on at idle it is a concern but not catastrophic. It can mean a number of things and you should figure out what and fix it. If it comes on at RPM and you hear noises... Get ready to build an engine.

Posted by: Shade Tree Apr 14 2009, 11:10 AM

My oil light doesn't come on when I turn the key. A PO has it wired to the driver's door switch! It lights up nice and bright when I open the door.

Posted by: SGB Apr 14 2009, 10:11 PM

no shit? awesome!