my preasure light flickering on?

[timninja]

driving to the store the other day and my oil pressure light started flickering at 4k,so I stopped,checked my oil it was 1/2 a qrt low filled it back to level with 5w-40 and and now it ls always on or off,temp doesn't seem to change these issues.how should go about troubleshooting this?

[jlevie]

The first step would be to find out what the oil pressure really is after changing the filter. That is done by temporarily replacing pressure switch with gauge.

[timninja]

Where is the pressure switch?

[camip]

This happened to me check if the wire is off the switch before getting a pressure tester etc.

[timninja]

wait is it a vacume hose to a solenoid switch down under my alternator in/on the oil pan?

[timninja]

wait its the only sensor in the oil pan,then it is nvm,stupid question answered,btw jlevie I wanted to thank you,you've helped me repair just about every issue ive had with my e30 so far.

[SmokeE30]

oil presure sensor is on the passenger side of the block single wire sensor down below the oil filter area, not on the pan itself, thats the oil level sender

[timninja]

Wait,I thought that was for the upper check oil level light?
In that case,i have mine wire nutted off because the wire broke and exposed.
Hmm,thanks smoke!

[SmokeE30]

yea the level sender for the check light is on the pan itself

[timninja]

Yeah I recently rebuilt my injectors and while doing that i broke that wire again and it was grounding on my intake,thanks man!