PDA

View Full Version : Which sensor to go for?



windy1978
05-06-2010, 09:13 PM
I am trying to get my coolant guage to work and decided to change the sensor. However all the on-line parts suppliers I have contact reckon it is a 4 pin sensor but mine is a 3 pin brown sensor and there is only 3 terminations in the plug. Do I fit the 4 pin sensor or do I have to track down another brown 3 pin sensor??

Peter D
06-06-2010, 07:10 AM
The year model and engine code is important. Perhaps you would like to tell us. Regards Peter

windy1978
06-06-2010, 10:48 AM
Sorry forgot those important details. It is a 1995 2.6 Avant engine code ABC.

Thanks

Peter D
06-06-2010, 11:14 AM
You have a 3 pin device and that is what you need to replace if it is faulty. Cold there will be 560 ohmx across pins 1 and 2, those adjacent to the baynet fitting, 90 degrees will read about 120 ohms and 60 ohms at 110 degrees. Ground pin 1 and the overheat warning light shoul flash. There was a four pin version fitted to some builds. Regards Peter

windy1978
07-06-2010, 09:40 AM
Thanks Peter, I have now ordered one from Quattro Corner for a very reasonable £35.

Peter D
07-06-2010, 11:01 AM
Did you test it. ? Regards Peter

windy1978
07-06-2010, 11:26 AM
I tried but go some different readings and I could not get the overheat light to come on at all. It is a bugger to get to as I had to remove the intake pipe to the throttle body and move about 6 pipies and looms to just reach it to get the plug off (which required a screwdriver and some long thin arms to unclip it safely without breaking it). I can see now why I was quoted nearly £130 + vat for my local garage to replace it.

Peter D
07-06-2010, 11:55 AM
What readings did you get. The overheat light may be a blown bulb in the dash insert. £35 and all that work is a lot if the problem is not the sensor. Regards Peter

windy1978
08-06-2010, 03:30 PM
I got the sensor this morning and wasted no time in fitting it. Now the guage works perfectly and after some tedious searching I found a broken wire for my overheat warning which I skillfully repaired in a very tight space.

Cheers for your help Peter I do appreciate it.