I have experienced a mind boggling issue with my 1994 Subaru SVX (135,000 miles if that helps anyone)
About 3 weeks ago, I noticed a loss of RPMs while driving but it shot back up (felt like the car might stall) but didn't, kept going.. no more problem. Thought nothing of it.
Noticed the same thing a couple more times, still very random, and seldom.
Then... This same thing happened and my car did stall out.... But turned right back over, kept going like nothing happened. No more loss of RPMs on the ride home.
Then over the next couple days, it happened a little more frequently and on one drive it stalled out a total of about 5 times in 10 minutes, and then kept driving like normal.
Then a few days later, it stalled out and never started back up.
I get Fuel, Spark, and Compression ( haven't compression tested, but the issue doesn't seem like a compression thing ) If i let it sit for a day without trying to start, and then try it and give it some gas while trying it sounds like its getting a combustion, just not anywhere near enough to start, and thats only for a few seconds of effort.
I have tested fuel pressure with a gauge (getting about 58psi) constant flow.
I have changed fuel filter.
I have tested front passenger side spark plug for spark (blue in color)
So now... I'm lost.
Cam sensor?
Crank sensor (wouldn't get spark?)
Fuel Pump Relay?
ANYTHING?! ahaha, i'm lost and about to sell the car as is, or piece it out.