The FSM doesn't show the location. I looked around and this looked like it. I believe it's the one that's on the left side.

 

There may actually be two?
One for meter and one for ECM?

You can detach one and see if the gauge goes 'dead'...

 

Yes those are your engine coolant sensors. One of them is the on board sensor for the gauge in your dash and the other one is for the ECM. I'm not sure which on is which? I assume the larger one to the right was the one for the ECM. Just a guess though.

 

the one with the black cover is the one that controls the Temp guage, and the one with the grey cover is the sctual temp sensor. I sure of this because when I changed my temp sensor I disconnected both and the one with the black cover was the one that would control the temp guage.

 

While we're on this topic, out of curiousity, how long is the water pump good for on the VQ?

 

The auto meter sensor looks just like the one on the left with black rubber cover. Anyway, I think it's going to be hard running the oem temp gauge sensor and the auto meter sensor at the same time. I don't think such of fitting exist. Here are my options.

1. Not use the OEM gauge temp sensor and just use the autometer one.

2. Tap the auto meter gauge wire to the OEM temp sensor wire. This might not work because the OEM sensor measure resistance between this wire and the ground. By using the same wire for two gauges might mess up the readings for both.

3. Drill and tap a new whole in the water neck for the autometer sensor. There might not be any room since the sensor is pretty long.

4. Fabricate a 2"-3" stainless steel or aluminum hose coupler for the upper radiator hose. Drill and tap a hole in the coupler for the autometer temp sensor.


What do you all think??

 

#3 should work out the best.

 

I did #2 and It seems to work, whether or not my readings are off, I am not sure. I would have to compare to another persons temp guage to see any discrepancies. My dummy temp gauge does not go all the way to the middle. I only goes about 1/3 of the way up from the bottom and sits there. I dont have a volt meter right now but will get one soon and measure the resistance of the wires.

 

I took a good look at the water neck. It's connected to the rear head. The heater core hoses also connects to it. It going to take a while to remove the piece so I can drill and tap for the autometer sender. I'm going with option #4. It's much easier to maintain and less work if it a leak should develop. I'll post a pic when I'm finish with it.