Well you are right - the lower sensor is indeed the one that feeds the gauge on the dash. I was convinced that it was the other way round. Did the shorting bit and got full reading! It seems like this is a very well used part and occurs in many vehicles at a cost of ~ £5 + VAT + delivery of ~£6 if bought on line. We have many Motor Factors around here so will see what is available next time on the move. After a bit of searching, the part numbers from various makers including Ford are in the attached Snip from auto-essentials.co.uk. It appears that this site gives comparative manufacturers part numbers when available so could be useful.
Thanks, Hamish -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Jim Hearne Sent: 14 March 2012 20:26 To: [email protected] Subject: Re: [Quantum Owners] Re: Low Reading Temperature Gauge The rectangular one should be connected to the gauge, the larger roundish one to the ecu. Is it possible these are mis-connected ? If you are getting these strange readings from the gauge sensor it could be why the gauge is reading low. My guess would be that there is a dirty contact inside the sensor which is changing it's resistance once it goes past a certain temperature. You may find that banging it on something would also change it's reading. These sensors just have a small cylinder of semiconducting material inside, because you can't solder to it the connections are usually just made by 2 spring contact. It's possible that on an oldish ecu that the temperature sensor would be just a cold/hot input but on the Zetec it's proper analog input. Jim -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s).
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