At 02:50 PM 12/28/2009, Jim Cochran wrote:
>idles at 1900 rpm, power when cold, wimpy when warm, dies when hot- I
>see a trend here...

Obvious candidate would be open circuit on Temp-II sender
circuit.  Voltage one side is ground; voltage on other side should be
close to the same as T-I sender if engine is at ambient.  When engine
warms up, T-II voltage IIRC is a few tenths of a volt.  If at any
time voltage is either zero or +5v then you have an open in the ECU
or ground line, or an open T-II sender.

>water level sensor blinking constantly

Not related.  Unplug the 42/43 "relay" from the panel -- if it blinks
after that it's a gauge problem, leaky 10uf/16v cap inside the gauge.

>would it make a difference if the wires from temp sensor at thermostat
>were reversed? I had pulled them off the sensor when first removing
>it. I believe this is just a variable resistor, right?

Both the gauge sender and the Temp-II sender are non-polarized
thermistors -- high resistance cold, low resistance hot.  Look for
problems at the terminals.

Yrs,
David