Saxo vtr temperature gauge problem

1. Waspywilson Newbie Joined: Oct 2016 Posts: 5

   #1 21st October 2016, 17:34

   Hi I'm a newbie on this site and looking for a bit of help, a friend has a 02 reg saxo vtr and is having problems with the temperature gauge, when you start the car from cold the temperature gauge goes straight to half way then as the car runs and warms up the gauge drops to the bottom and stays there,
   
   I have bled the water and changed both the sensors but still no joy, I'm also prety sure the cooling fans don't kick in either,
   
   Any help would be greatly appreciated
2. Ben_SaxoForte Saxperience Forum Bum Joined: Mar 2009 Stoke-on-trent Posts: 2640 Mk5 Golf GTTDI Mk2 VTR Project

   #2 21st October 2016, 17:38

   Quote:

   Originally Posted by Waspywilson Hi I'm a newbie on this site and looking for a bit of help, a friend has a 02 reg saxo vtr and is having problems with the temperature gauge, when you start the car from cold the temperature gauge goes straight to half way then as the car runs and warms up the gauge drops to the bottom and stays there, I have bled the water and changed both the sensors but still no joy, I'm also prety sure the cooling fans don't kick in either, Any help would be greatly appreciated

   Sorry I can't be of much help but you can test if the cooling fan is working by unplugging the top temp sensor whilst the engine is running. I would have said change the sensors other than that check all the wiring is ok it could possibly be the actual gauges inside the car though.
3. Waspywilson Newbie Joined: Oct 2016 Posts: 5

   #3 21st October 2016, 17:45

   Thanks for the reply 😄 If I unplug the top green plug the fan does kick in, so atleast the fan motor is okay, don't know if the gauge not working is connected to the fan not kicking in tho,
   
   the car isn't using water so don't think it's getting too hot but would like to get the gauge working for peice of mind
4. Ben_SaxoForte Saxperience Forum Bum Joined: Mar 2009 Stoke-on-trent Posts: 2640 Mk5 Golf GTTDI Mk2 VTR Project

   #4 21st October 2016, 17:57

   I'm pretty sure the gauge wouldn't affect the fan as the sensor for the fan is wired to the ecu and the other sensor is for the gauges, the fan does take quite a while to kick in anyway though so it might be ok, I remember waiting a very long time for it to kick in when I did a coolant flush.
5. user_20080 Saxperience Hardcore! Joined: Dec 2007 smurfland. Posts: 17346 Ex saxo owner.

   #5 21st October 2016, 17:58

   Are all of the other gauges working ok?Try unplugging the battery for 30mins.
6. Waspywilson Newbie Joined: Oct 2016 Posts: 5

   #6 21st October 2016, 19:09

   Yeh all the other gauges work fine, I have disconnected the battery this morning so will try it later tonight so fingers crossed 😬
7. Waspywilson Newbie Joined: Oct 2016 Posts: 5

   #7 21st October 2016, 20:51

   Battery back on and gauge still doing the same thing ☹️️ Any ideas?
8. user_20080 Saxperience Hardcore! Joined: Dec 2007 smurfland. Posts: 17346 Ex saxo owner.

   #8 21st October 2016, 20:57

   With you sat in the car get someone to wiggle the wires for the temp gauge sensor.If it affects the gauge then you've got a break in the loom.
9. Waspywilson Newbie Joined: Oct 2016 Posts: 5

   #9 21st October 2016, 21:19

   Good idea, will try that as soon as I can