Oil light blinking

hey guys, i have a 924S 1988...my oil light keeps blinking...my oil level is good and ive been using mobile one oil...i cant figure out what the deal is...its also idling pretty rough, it runs fine after about 1100rpm with gas but it fluxes under 1000 and sounds like its gonna die but just idels back and forth from 900-2000 rpm at idle when warm....

Also i have a grounding problem....do you guys have any sugustions about grounding the ECU and battery better?
thanks

Brian
1988 924S

Hi Brian, I'd suggest you replace all your grounds with new grounds, after 15 years, corrosion can prevent good grounding, and the factory grounds weren't the best to start with.

If you don't feel like springing for new grounds, you can just pick up a can of electrical cleaner, sand down your original grounds, and give them a good spray of the electrical cleaner.

Probably the best bet would be to replace your battery and alternator grounds with good AWG 4 guage or 2 guage wire, and soldered brass lugs. I converted my 924 to GM style bolt in battery terminals, since corrosion isn't an issue with those.

Grounds are really easy to make, you can buy the wire in a spool, and then you just have to cut it to length, strip the ends, and either solder or crimp the lugs on. Then it's just a matter of unbolting the old ground, and bolting the new one in.