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Old 04-11-2004, 02:49   #1 (permalink)
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Sensors

In the thermostat housing there are 3 sensors:
1. One wire for the dash
2. Two wire for the ecu with injector style connector
3. Ford Propriatry connector sensor

What is the 3rd sensor used for??

Also in the later setups the temp sensor was put at the back of the head, do the older heads have the provision for this??
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Old 04-11-2004, 02:56   #2 (permalink)
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Re: Sensors

which model are you refering to mate?
also 6 or 8?
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Old 04-11-2004, 02:58   #3 (permalink)
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Re: Sensors

Ohhhhhh crap my bad....
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Old 04-11-2004, 03:08   #4 (permalink)
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Re: Sensors

PVS (ported vaccum switch) Valve which changes air con to recirculate mode when engine is heading to overheating to reduce air compressor load and thus accelerated overheating.
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Old 04-12-2004, 02:25   #5 (permalink)
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Re: Sensors

So is it inline with the air-con compressor magnetic clutch power feed?? Or is it connected to the climate control computer?

Also does anyone know for sure if hooking up a second ecu and piggybacking resistor type sensors (like water temp) will work?? I have tried sharing the O2 sensor and the output went funky.
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Old 04-12-2004, 04:30   #6 (permalink)
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Re: Sensors

This is a vaccuum line i think, and it goes to the climate control circuit. I had something to do with it when I pulled my dash out. I had to back track it to find out where it went because it came unstuck out of the joiner inside the dash.
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Old 04-12-2004, 16:32   #7 (permalink)
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Re: Sensors

There is no vaccum line hooked up to this 3rd sensor/switch, it is a electrical device of some type and function which I assume is what Aussieblue has said.
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Old 04-12-2004, 19:23   #8 (permalink)
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Re: Sensors

It's for the automatic climate control fitted to higher spec models. The one with the injector style connector is the one for the ACC. The smallest sensor is for the dash and the other is the ECT (engine coolant temp) sensor for the ECU.

Temp sensor moved to the back of the head with the AU, highly doubtful E-series would have this.

EF/EL only has the ECT sensor, it goes to the ECU and signals are sent to the ACC and cluster from there.
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