5.0l

I have had an issue with as long as I've owned my Riviera, whenever I go to accelerate onto the highway or from a relatively low speed to a higher speed, it seems like my engine bogs down. If I floor it, my engine revs up but it seems to lose speed instead of gaining it. And if i let back off...

I've got a 91 Roadmaster wagon with the 5.0l. Started the car earlier and it idle fine with a slight surge, let it run for a bit, shut it off for a couple minutes, and when I started it back it wanted to idle above 2000 Rpms. I've replaced the iacv, distributor, timed it correctly, replaced...