I have an early 94 z28 and i was wondering if there are 2 ects One for computer and one for the gauge. There is a sensor in the water pump but im not positive what it is.

 

I believe there is one for the temp gauge and one that controls the fans. I'm not sure, I just started working on a 94Z and am learning where everything is on it.

 

The ECT which is wired directly to the PCM is screwed into the water pump housing. The sending unit for the temp gage is screwed into the head near the No 1 plug.

The PCM reads the signal from the ECT and activates the various fan relays which in turn activate the fans.

Early on the 94 run the fans were wired to come on at full speed, one or two fans were activated as needed. Late in the run the fans were wired to both come on at low speed, and both switch to high speed as needed.

 

as ussual pete is right on.

 

cool, thanks a bunch man