Quad 4 coolant sensor wire colors
Posted: Tue Apr 17, 2007 10:14 pm
This should be simple.
QUESTION: What are the wire colors going to the coolant sensors to the '90 Q4 engine?
I have a 90 wire harness and [2] 91 engine coolant sensors. I want the instrument gauge to work because it doesn't right now.
I assume there will be 3wires total, one two-pin and one single-pin.
I thinkg its a gry and gry-red wire pair going to a 2-pin sensor and I heated the sensor up, plugged it in, and no reading [still as if cold on gauge]. The other sensor has one pin. I have a connector pretty much under the air box [can't reach coolant area, but what the heck] of grn and blu [2 pin]. Don't know where it goes.
both sensors came from a car with gauges, so I know even having the one pin sensor, still should give a gauge reading somehow. Both sensors were good when removed. Yes, both sensors run side-by-side.
I hope I provided enough info.
Andy
QUESTION: What are the wire colors going to the coolant sensors to the '90 Q4 engine?
I have a 90 wire harness and [2] 91 engine coolant sensors. I want the instrument gauge to work because it doesn't right now.
I assume there will be 3wires total, one two-pin and one single-pin.
I thinkg its a gry and gry-red wire pair going to a 2-pin sensor and I heated the sensor up, plugged it in, and no reading [still as if cold on gauge]. The other sensor has one pin. I have a connector pretty much under the air box [can't reach coolant area, but what the heck] of grn and blu [2 pin]. Don't know where it goes.
both sensors came from a car with gauges, so I know even having the one pin sensor, still should give a gauge reading somehow. Both sensors were good when removed. Yes, both sensors run side-by-side.
I hope I provided enough info.
Andy