Hello everyone. I drive a 94 z28 with 203k miles, it is completely stock with a rebuilt transmission and straight piped.
I don't know what's going on, but yesterday I started my car when I was leaving work and the fuel pump made a growling sound, and I always let it run until it stops before cranking but it has never made anything more than a hum, so I cut it back off and turned it back on and it did it again, so I babied it home, and it hasn't done that since. However, that time and every time since it has had a very rough vibration at idle and while driving, and it has a very lopey sound.
If anyone has any idea what this could be, or any additional details to help diagnose it would be greatly appreciated.
I know for a fact I need a transmission mount insert but my motor mounts are both fine. So I have no clue what it could be.