Leaderboard

Yea, the pressure regulator in the oil pump can get weak and stick causing low pressure. Light flickering while drive it means you have single digits psi. NOT GOOD. That's alarming at an idle....Either that, or the clearances on your engine are getting so loose and the oil is blowing out faster than the pump can supply. I think it was 2002 they switched from the 9mm to the 7mm rotor. I measured the one in my '00 Outback, and it was 9mm. Basically everything in the '90s had the 9mm, but rumor has it the 2.2 ones were set at a lower pressure. 10mm is WRX 11mm is STi Some JDM models have 12mm, and I think there's an aftermarket one that's 12, maybe a 13. 9 or 10mm is good. I got a deal on an 11mm one locally, and used that on my '00 Outback. In theory, this means the bypass will be open more, which can heat the oil and pull more out of the pan. But the way I drive and this climate, I'm not concerned about heat, and I check the oil level every time I fill up. Quick google search turned up this page, which shows the OEM part numbers for 10, 11 and 12mm. https://www.outfrontmotorsports.com/subaru-oil-pumps

I've only ever had 1 car with an 'electrically' bad sending unit (some that leaked oil but reported OK) It was on all the time. The behavior of yours 'may' be indicative of truly low pressure. But, hey, even if it doesn't fix the issue, you get a new pressure switch on an 18 year old car.

I think the 04 Forester got the tiniest dinky 7mm oil pump subaru ever put on an EJ engine. Replace the pump with a 9mm version and tigthen backing plate screws. I'd send one but I think I cleaned out all my EJ stuff. If you want to try to keep the current oil pump, tighten the backing plate screws (a few/all of them are usually loose and that little pump doesn't need to loose any potential efficiency), install a new oil pump oring/crank seal, and reseal it to the block.

Disconnect the crank angle sensor. No spark, no injector pulse. Done. Cheers Bennie

Here are some pretty recent sales on Bring a Trailer (BaT) I watched the last auction, bidding was hot and heavy in the last minute between 2 guys We can only hope we can get this much when it comes time to sell https://bringatrailer.com/subaru/brat/?q=subaru brat