I have a 1987 Trans Am with the 305 TPI, vin F. I just replaced the water pump, and as I was testing everything I noticed that my temp gauge in the gauge cluster does not rise at all. This is unlike the other forums that I have read where the gauge gets pinned at max or wobbles around and stuff. I have read that this can be caused by the sending unit, located in the drivers side cylinder head, however I cannot find that anywhere on my car. No green wire, no brass/copper hex screwed into the head, nothing. I really don't want to drive this car without a temp reading, especially while it's still hot where I am.
Before I realized it could be the sending unit I was looking for the sensor that hooks into a hose coming out of the top of the water pump. This sensor is for the fans, correct? Or could I have damaged the sensor and caused the gauge to quit working while changing the water pump? I am pretty sure this sensor is just for the ECU to tell when to turn the fans on though. Here's a picture of the connector though, just in case, this is on top of the water pump.
Again, the gauge just doesn't work. No movement at any point during a full heat cycle. Plus I can't even find a sending unit on either cylinder head, so I am so very confused.
Could it also just be the gauge went bad? Any help would be appreciated, I have not been able to drive this car in weeks and I am dying to do so, but without a temp reading I am nervous to take it very far from the house.
Thanks in advance!