Automatic transmission shift stalling engine

Hello,

Vehicle- 1991 Acura Integra LS Coupe automatic with 237 miles on the chasis.

Recently, was repairing and replacing my Thermostat. I removed my Distributor in order o get to it. I believe I replaced it properly.

Here's the problem.
The automatic transmission shift lever usually has a delay after the vehicle is driven and in park. It usually takes 30-60 secs before the S3 moves to P even after I have shifted into park. Now, the problem is that it even wants to shift while I am driving. I think one of the relays are out.
Either the Automatic Transaxle Interlock control unit, the Automatic Transaxle control unit, or the main computer.

I cannot drive the car more than 1 block before the Yellow check engine light comes on, while the Automatic shift lever starts making a 'CLICKING Sound

Then, it has a hard time starting because the automatic shift lever shows that it is in Park and S3 and the same time.