I have no idea what the number should be, but the voltage on the other
end of the wire, backprobed at the fuel injection computer (ECU) plug
(terminal 2) should rise with the temperature of the motor. AFAIK all
coolant temp sensors are NTC (negative temperature coefficient) so as
the temp rises the resistance decreases. The other gray wire goes to pin
2 on the ignition control unit (ICU). The fuel control wire passes to
the main harness via Plug D (2X4) pin 4 near the coolant
overflow/reservoir. The ignition wire passes to the main harness through
plug F  (2X4) pin 2 below the left side upper strut gusset.

There have been many problems with these plug connectors. Mostly in that
the male pins pushed out of the plug housing during assembly.

The resistance values between ground and pin 2 at the ECU should be:
-10C (14F) 8260-10560 ohms
+20C (68F) 2280-2720 ohms
+80C (176F) 290-364 ohms

If the throttle switch is open resistance between pin3 and ground at ECU
is >0 ohms the MAF sensor will not adjust, nor will you see any feedback
at the test point. If the TPS does not make an audible click when the
throttle is cracked odds are it's out of adjustment, the throttle
housing is full of goop, or it's defective.

To check the mass meter: Ground terminal 21 at the ECU, (switches ECU
relay on). Measure voltage between MAF terminals 1 (ground) and 5. You
should see B+.  Disconnect the ground jumper on ECU 21. Measure the
resistance between MAF terminals 6 and 7: should be ~3-4 Ohms.
Resistance between 6 and 14 should be 0-10,000 Ohms depending on the
position of the CO adjustment screw.

To check the O2 sensor preheater: Resistance should be between 3 Ohms
(20C~68F) and 13 ohms (350C~662F).

HTH

Bob