Sages, so here is the back story.... Bought the car back in 2017. It needed an AMM to get it to kick off and idle correctly.

The mileage is 215k, year is 1993.

Replaced a lot of things:
spark plugs,
wires,
rotor,
cap,
crank position sensor,
new water pump,
timing belt,
idler pulley,
hoses,
air cleaner.

The car does not get driven as I'm still working on it in my spare time so it gets to sit a lot.

The car started and ran fine up until this past March, when the Fuel Pressure Regulator failed. Replaced it, and all was well.

Recently I pulled it into the garage and it ran fine. It got pulled into the garage to work on all the brakes, and when I went to move it, it would start, but ran really badly, like really rough idle, would not rev up at all, and when you left off the throttle it would run for a second and then just die.

Eventually, it would no longer start at all, though it would turn over.

I have spark at the coil, and cylinder 1. I can do all of them, but I thought I'd just stop there for now.

Fuel pressure at the rail is 40 PSI on turning the key and jumps to 43 while cranking.

Compression, though on a cold engine at cylinder 1 is 140 PSI. I stopped there as the battery was getting weak and needed to be recharged.

Yesterday I also removed and cleaned the idle air control valve as it was dirty. The TPS was replaced as it no longer made an audible sound when opening up the throttle. It was replaced with one from a working motor, and there is now an audible click when the throttle is cracked open.

I also swapped out and tested a different AMM, ECU, and EZK just because I could. Nothing made a difference.

Spark plugs are new, but now are fouled very badly with an oily residue.

I also put the car in test mode and I could hear the fuel injectors opening and closing and the Idle Air Control valve operating.

I'm at a loss as to what the problem is. Apparently Murphy has taken up residence in my car and does not want to leave.

Any and all help here will be greatly appreciated.

Thanks in advance,

Matt

--
1989 - 245, 1990 - 245, 1991 - 245, and 1993 - 245