Thread: Oil Dummy Light Blinks Off Then On and Off During Some Starts

Hey guys,

During some starts my oil light turns off like it should, but right when it shuts off it blinks on again for a second and then finally shuts off. It doesn't come on again while driving and this doesn't happen during all starts. I can turn the car on for the first time in the morning and sometimes it won't do it, but if I leave the car parked for 20-30 minutes sometimes it'll do it. Is this normal? I have an Autometer oil pressure gauge hooked up and at idle it's at about 12.5 psi and while driving at around 3000 rpm or above it's around 50 psi, which per FSM is within spec. I don't know how accurate it is, but during cold starts the psi is higher until I start to drive for a couple of minutes which I have heard is also normal.

My oil pan has little dents here and there, but nothing major and I've been driving it like that for about 2 years with my JDM swap. I have had my car parked for about 1 year and don't remember if it did this before I parked it.

I'm also currently using 5W30.

Thank you!!

I'm gonna say your oil pressure switch is starting to go. Should be a cheap and easy part to replace. Dave

Provided your Autometer setup is working, I'll agree with Dave about the OEM switch dieing.

OEM switch is garbage, but if/when you replace it make sure you don't break it like I once did, then you'll have bigger problems

If you replace the switch and still have the issue, the engine is on its way out.

I hope this is not the case since I have just had the engine swapped out about 2-3 years ago and it seems to run as strong as ever. No weird noises and my oil pressure gauge seems to be working. Like I said before, this doesn't happen every day.

When this happens it blinks rapidly so the second I mentioned it stays on after turning off the first time is probably longer then the time it actually stays on before shutting off. Just try to imagine a flicker before turning off. That's the best way I can describe it.

I'm still going to replace the oil pressure switch and keep a close eye on my oil pressure gauge.

Thank you all for your input!!