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Zetec thermostat wiring
The Modfather - 13/4/11 at 05:30 PM

Hi guys.

Can anyone tell me the following: On a zetec thermostat housing (original type) what sensor is the dash temp sensor (top or bottom) and what way round does the wiring need to be? I have the signal wire from the gauge going to the top sensor, and an earth wire from the sensor to the chassis. I also have the lower sensor wired into the megajolt and an earth wire.
My problem is that I have no gauge working and I know it worked fine on my pinto. I believe I have the wiring wrong on the sensors, but don't know what way round they need to be wired, or whether I have the correct sensor wired to the gauge.
Can anyone help please?
Daz


big_wasa - 13/4/11 at 05:45 PM

top is ecu and bottom is gauge. I doubt the ford sensor will match your gauge.


The Modfather - 13/4/11 at 05:50 PM

As long as it reads something. Do you know which terminal is the signal wire? Mine didn't come with the plug so have had to use small red spades. I will lengthen the wires then to reach the lower sender.
Thanks


big_wasa - 13/4/11 at 06:41 PM

Silvertop ?

You can buy a new plug for a few quid. Junior Power Timer Connector (2 Pin) kit MHC20910 | eBay UK

I havnt got one to hand but would guess its the same as the cps. Have a look on the Ms forums


The Modfather - 13/4/11 at 08:55 PM

Yes it is a silver top.

That plug will not fit the sensor, but thanks for posting the idea. I will pop to the scrap yard and get both thermostat sensor plugs and rewire them.

Daz


big_wasa - 14/4/11 at 09:03 AM

Thats the plug for the bottom sensor used for the dash. The top one is a round one.


The Modfather - 14/4/11 at 01:12 PM

I got both now from a local scrappies, but having looked through the Escort manual, I think I am biting off too much with the top sensor as this as you say goes to the ECU. I wanted this to go to the megajolt as it can take a temp sensor. The bottom one I will wire in as normal, feed to gauge and an earth, and see waht that does.

If anyone else has used the top sensor for the megajolt I would like to hear from you.

Thanks

Daz