Quote:
Originally Posted by LMP
AH..this one....(the one used by the computer is another one)
...I've NEVER seen it but here is an indirect solution in case you wanted first to verify its operation..if not done yet. This is a very sturdy sensor and very rarely fails. Wiring is more susceptible to failure.
Connector 100 is near left hand hood hinge,
This is a 10 pin connector and contact G - dark green/white stripe - is the one that leads to i/p temp sensor.
Measure G to ground
CONtacts are
ABCDE
x JHGF
resistance values show on this i/p diagram
www.avigex.ca/xport/instrumentpanel1.jpg
and here
www.avigex.ca/xport/thermistor.jpg |
I found the connector, the 'G' contact, and the green wire with white tracer. I checked the ohms readings as per the above links. One side of the connector showed 'open' with no reading at all. The other side of the connector showed 49 ohms with the engine cold; it went up to 59 ohms with the engine warm. These values do not jive at all with the data in the above links.
I momentarily grounded the contact in the connector which made the gauge needle jump. I located the temp sending unit (finally! I will desscribe the location below). I unplugged the TSU and temporarily grounded the contact (green wire w/white tracer) in the plug; this causes the gauge needle to jump.
I can now only deduce that it is the TSU itself. $30 CAD +/-
The TSU (or the Coolant Temp Sensor I think it is called) is hidden around the back of the intake manifold; maybe right on the intake manifold back there. It is closer to the drivers side of the manifold. There are some vacuum lines, and some bracket type stuff just above the TSU. I was able to jockey my hand around to barely make it fit in there. It is a tight squeeze but it looks like a socket and extension will fit in there. I will post the results.