Quote:
Which coolant temperature sensor did you change? The two wire one goes to the PCM. ... If this is the one you replaced, the wiring to it may be going bad, or a bad ground if shared with the fuel system. Put a meter on it.
Roger,
I'm narrowing this down more and more to the sensor circuit. Haynes manual schematics shows ECT going to pins 7 and 46 on the ECU (PCM) connector, so I'll check them both for DC voltage signal AND continuity while I'm at it. (After I buy a new digital meter! The one I dropped last night is beyond repair!) Hopefully Haynes schematic is right; I dunna' know though, they don't show any connectors between the ECT sensor and ECU connector and I know they're in there! ECT circuit doesn't seem to share any common ground with the fuel circuit either.
Do you happen to know the polarity of the ECT wires? 
Former, now returned CEG'er!
95SE MTX, (AKA "The Road Rat"). Stock except for:TH fix, B.A.T. big brake kit, tranny cocktail and lots of re-insulated wiring! May yet be a 3.0!
"Speed doesn't kill, stupidity does!"
| 
