Update:
I had to put a new clutch in my 1993 Capri N/A, and it was in the shop for six weeks (I'm not going to go back to that shop anymore). In any case, when I got the car back, the Idle was too high, the engines RPM fluctuated wildly, and the check engine light flickered on/off. Code 9 was registered (ECT), as well as an Oxygen Sensor code. I returned the Capri to the shop to fix a transmission fluid leak, and to find the problem which didn't exist when I took the car in originally. The mechanic was unable to find the problem with the CEL and idle issues - so I took it home after the leak had been fixed (It still leaks a bit, and I'm not sure why).
When I took it home the second time, the idle was at 2000 RPM's and it wouldn't slow down - so after a bit of thought, I guessed the IAC may be acting up - so I tried something different to slow the RPM's down. I placed a large adjustable wrench on the hose going to the TB coming out of the IAC (too much air, or a vacuum leak - never found a vacuum leak). It did slow the engine down, as expected.
I let the car run for about an hour, and I was eventally able to remove the wrench. The idle was still at 1200-1500 RPM.
Now, here's where it got interesting. I turned the car off, and tried to restart the engine. It wouldn't restart easily, and I had to play with the gas pedal to get it to start. I did this about 5 times, and each time it got harder to start - till eventually, I could not start the car at all - no matter what I did. Now, I remember the original problem I had with starting the car when I obtained the car - and I remembered the CEL Code 9 (ECT)that had recently shown up after I got the car back from the shop the first time. The ECT Code 9 never registered again, and NO codes registered at all at this point. So, being at a loss to know what to do at this point, I decided to try a new ECT Sensor (The ECT Sensor that I had put in was put in in May, 2011). I didn't really think that it could be bad - since I had replaced it with a new one in May, but since I had recently seen Code 9, and remembered how hard it was to start when I got the car, I bought a new ECT - ACDelco F1864 ECT Sensor. The ECT that I replaced in May was a Beck Arnley 158-0134 ECT. Since I suspected that the Beck Arnley ECT Sensor had gone bad, I decided to go with the ACDelco Sensor instead. When the ACDelco sensor arrived, I unplugged the ECT connector from the ECT in the car, and just for proof, connected the ACDelco sensor to the wiring harness ECT connector, and just let it dangle. Got into the car, and it started right up and the idle was about 1500 RPM, and steady. RPM's Dropped a bit after a few seconds of running. I did not have to do anything at all! Shut the car down, and it restarted perfectly - again, and again. I'll be replacing the sensor on Saturday, and I'll report back.
Moral of this story... DON'T UNDERESTIMATE WHAT A ECT SENSOR CAN DO TO CORRECT/FIX STARTUP/IDLE/RUNNING PROBLEMS! If the VAF and IAC appear to be okay, try looking at the ECT Sensor as a realistic and highly probable cause of your starting and idle problems. It's not called the "MASTER SENSOR" for no reason...
Note: I would avoid the Beck Arnley Sensor, judging by my experience.
Cheers! Rabbit