I took the Fiero out for a drive, today. There were several oddities:
1. Rather than the usual 16 MPG, I got about 28 (8 gallons in 237 miles) at 80 MPH.
2. The engine kept cutting out on me, as if it wasn't getting fuel. Usually, this was just a pause, but once I lost power for several seconds, and another time, almost didn't get it re-started.
3. The AC never got more than cool.
4. The engine ran almost at the red for temp, for the first tank of fuel, which got me about 22MPG, then for the 28MPG tank, it ran about halfway. I noticed with the first tank that the engine ran hotter at 70+ MPH than at 50 MPH.
5. When downshifting, it went to second gear, which is about 6K RPM. Adjustment needed.
I was thinking that maybe the engine got heat-soaked. I will say that above 80 MPH, the engine comes to life.
Changing injectors. Not liking the Accel brand.