Hey Machineman, thanks for the suggestions.

I guess my post was a little confusing. To reiterate: I did take the wire on and off (i.e., unplug the ECT and plug it back in) and yes it runs differently. Unplugged when cold, the car runs perfectly. Plugged back in and the car stalls and pops. So I switched off the ignition and 1) unplugged the ECT and tested the ohms to make double sure it was within specs and it was and 2) plugged it back in, went to the ECU, disconnected the harness and tested pin#2 and ground. This reading also produced the same ohms as the ECT disconnected so it means that the wiring to the ECU is sound. Several Brickboarders suggested that based upon my symptoms that there was a short in the wiring. I confirmed that this was not the case. SO is this clear as mud now?

Anyway, back to your suggestions. My initial post states that I swapped out the AMM and the ECU and if I didn't mention it, I also swapped out and readjusted the TPS. You suggestion about tracing the TPS and AMM circuits are good.

P.S. I did not check the ECT 350 ohms when hot. I figured the problem is cold running and the ohms are correct for that. Also this is a replacement ECT as well and both read exactly the same ohms.

I also replaced the corrugated hose going from the AMM to the TB. No cracks or anything and all fittings are tight.

Yup it's something twisted or it's me missing something really obvious. I love challenges though.

Thanks again everyone for your replies.