Yeah. my car was running fine. Just that it was hard to start. After I replaced the starter it was so so. But once I replaced the main relay car would start rifgt up. I've had car looked at several times. I even left it with this shop couple days to get checked out. The car wouldn't bog. They said my fuel pump sice fine. I was getting spark. Now when I'm just cruising etc my tach would just start dropping to 0 as if I ran out of gas then you feel a hard kick like being hit from behind. It'll pick up speed slow down hard kick etc... When it get a chance to idle it'll be a lil rough then tach would rise a little above 1. After that happen and if light change green it'll drive regular again. That's the best I can describe it. Just weird any a pain in rear. It '' bog whenever. Few days could go by b4 this happens again.
I told my cousin about this. He said could be my fuel pressure regulator. Could it?

Sorry so long. NE input I'll appreciate