Temp sensor/thermostat? 2003 VTS

1. Pricklep Saxperience Hardcore! Joined: Mar 2008 Posts: 31279 Citroen Saxo VTS, S60 D5

   #1 29th January 2012, 21:09

   Basically the temp guage doesnt go up when im driving but when im idling/traffic it goes up to half and stays there. Fan stays on a minute after engines switched off sometimes.
   
   Its defo not the HG as it would of went by now also the radiator water levels the same.
   
   Could anyone link me a pic to where abouts they are? and link ot buy one?
   
   Chars..
2. Cam Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.

   #2 29th January 2012, 21:15

   Sounds like its got no thermostat, people normally take them out when they overheat. Eg: headgasket or the thermostat fails but when they do the car will get overheated.. Try replace it though. Also it wouldnt have gone by now i drove my furio around for about 6-7 months like it.
3. Pricklep Saxperience Hardcore! Joined: Mar 2008 Posts: 31279 Citroen Saxo VTS, S60 D5

   #3 29th January 2012, 21:19

   Quote:

   Originally Posted by Cam Sounds like its got no thermostat, people normally take them out when they overheat. Eg: headgasket or the thermostat fails but when they do the car will get overheated.. Try replace it though. Also it wouldnt have gone by now i drove my furio around for about 6-7 months like it.

   Sure it will have one tbh. I wouldnt get warm air in the heaters otherwise?
4. Cam Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.

   #4 29th January 2012, 21:20

   Quote:

   Originally Posted by Prickle Sure it will have one tbh. I wouldnt get warm air in the heaters otherwise?

   You will... It just take longer to warm up where the water is constanly flowing and car sucking in cold air.
5. Pricklep Saxperience Hardcore! Joined: Mar 2008 Posts: 31279 Citroen Saxo VTS, S60 D5

   #5 29th January 2012, 21:23

   Quote:

   Originally Posted by Cam You will... It just take longer to warm up where the water is constanly flowing and car sucking in cold air.

   It doesnt take long for the heaters to warm up though lol.
   
   Looked inside the radiotor, no oil just a rusty coloured water. Looks due a change.
   
   But if my guage only goes up when idling then it must be a sensor?
6. Tontsy Saxperience Addict Joined: Oct 2008 Plymouth, Fiddling - under a two poster ramp Posts: 14064 Audi

   #6 29th January 2012, 21:27

   temp sensor.
7. Pricklep Saxperience Hardcore! Joined: Mar 2008 Posts: 31279 Citroen Saxo VTS, S60 D5

   #7 29th January 2012, 21:31

   Cheers.
   
   Will get it sorted on my next day off work..
8. Stefan_Wood Established Member Joined: Sep 2011 Birmingham Posts: 1557 Furio, 306Hdi, Astra 1.9cdti

   #8 29th January 2012, 22:01

   Had similar problem mate.
   Car wouldnt heat up and when in taffic would go to half way but then would start overheating, heaters still worked.
   Turned out i had no thermostat in got a new one flushed system perfect now
9. Pricklep Saxperience Hardcore! Joined: Mar 2008 Posts: 31279 Citroen Saxo VTS, S60 D5

   #9 29th January 2012, 22:08

   Quote:

   Originally Posted by Stefan_Wood Had similar problem mate. Car wouldnt heat up and when in taffic would go to half way but then would start overheating, heaters still worked. Turned out i had no thermostat in got a new one flushed system perfect now

   Yeah at first i thought fuck my HG is going and i was awaiting the dreaded steam from the bonnet and odd smell through the heaters.. but nope. Parked it up, let it cool down and the water levels havent changed everything was fine.
   
   So it has to be a sensor/thermostat and it will be changed this week.
   
   Cheers.
10. Tom5190 Saxperience Post Whore Joined: Sep 2007 Someones Bumhole Posts: 5721 Mk2 16v Desire

    #10 29th January 2012, 22:12

    sounds like thermostat, will be sticking open most likely. just did mine had exactly the same problem, no heat on the gauge whilst driving, heated up fine standing still and always had warm air. nice easy fix and change the coolant while you at it if its horrid.

    1 user thanked this post: Pricklep
11. Pricklep Saxperience Hardcore! Joined: Mar 2008 Posts: 31279 Citroen Saxo VTS, S60 D5

    #11 29th January 2012, 22:15

    Quote:

    Originally Posted by Tom5190 sounds like thermostat, will be sticking open most likely. just did mine had exactly the same problem, no heat on the gauge whilst driving, heated up fine standing still and always had warm air. nice easy fix and change the coolant while you at it if its horrid.

    Yes!
    
    Cheers mate and it doesnt look great so thats a must.
12. Pricklep Saxperience Hardcore! Joined: Mar 2008 Posts: 31279 Citroen Saxo VTS, S60 D5

    #12 30th January 2012, 22:39

    One last thing - will i need to unplug the battery to change the temp sensor and is it blue or green? and where abouts is it?
    
    Cheers.
13. user_15516 Saxperience Post Whore Joined: Apr 2007 Posts: 6640 Integra DC5R & VTS

    #13 30th January 2012, 22:45

    IIRC, the green sensor in the back of the thermostat housing is the coolant temp sensor for the ECU. The blue one that screws into the right hand side of the head is for the coolant temp display on the dash.

    1 user thanked this post: Pricklep
14. Tom5190 Saxperience Post Whore Joined: Sep 2007 Someones Bumhole Posts: 5721 Mk2 16v Desire

    #14 30th January 2012, 23:28

    You wont need to unplug the battery but ill be very suprised if the temp sensor is at fault. Do you know how to test a thermostat?
15. Pricklep Saxperience Hardcore! Joined: Mar 2008 Posts: 31279 Citroen Saxo VTS, S60 D5

    #15 31st January 2012, 20:23

    Quote:

    Originally Posted by Liam_ IIRC, the green sensor in the back of the thermostat housing is the coolant temp sensor for the ECU. The blue one that screws into the right hand side of the head is for the coolant temp display on the dash.

    Do i change both? the guage doesnt go to half and it sits at the bottom all the time so must be that?
    
    Thanks.
    
    

    Quote:

    Originally Posted by Tom5190 You wont need to unplug the battery but ill be very suprised if the temp sensor is at fault. Do you know how to test a thermostat?

    I do yeah and it does work (kinda) but i wouldnt say its warm when it should be.
16. Cam Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.

    #16 31st January 2012, 20:25

    Quote:

    Originally Posted by Prickle Do i change both? the guage doesnt go to half and it sits at the bottom all the time so must be that? Thanks. I do yeah and it does work (kinda) but i wouldnt say its warm when it should be.

    Sounds like you need to go to a garage...
17. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

    #17 31st January 2012, 21:26

    i told you the other day john lol, try the new stat and fluch the coolant then go from there
18. Pricklep Saxperience Hardcore! Joined: Mar 2008 Posts: 31279 Citroen Saxo VTS, S60 D5

    #18 5th February 2012, 17:16

    Quote:

    Originally Posted by Cam Sounds like you need to go to a garage...

    No mate.
    
    

    Quote:

    Originally Posted by blackie_2k5 i told you the other day john lol, try the new stat and fluch the coolant then go from there

    Changed the coolant yesterday and the thermostat. Alls well. it sits at half normal. i checked the sensor and it is fine. So got my money back for the new one. pmsl..
19. Tom5190 Saxperience Post Whore Joined: Sep 2007 Someones Bumhole Posts: 5721 Mk2 16v Desire

    #19 5th February 2012, 17:32

    Sounds good, thought it wouldnt be the sensor like ive seen quite a few doing the same thing just with thermostat sticking open.
20. Pricklep Saxperience Hardcore! Joined: Mar 2008 Posts: 31279 Citroen Saxo VTS, S60 D5

    #20 5th February 2012, 17:36

    Quote:

    Originally Posted by Tom5190 Sounds good, thought it wouldnt be the sensor like ive seen quite a few doing the same thing just with thermostat sticking open.

    Cheers.
    
    Oil next week.
21. Cam Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.

    #21 5th February 2012, 17:37

    Quote:

    Originally Posted by Prickle Cheers. Oil next week.

    And filter...
22. Pricklep Saxperience Hardcore! Joined: Mar 2008 Posts: 31279 Citroen Saxo VTS, S60 D5

    #22 5th February 2012, 17:39

    Quote:

    Originally Posted by Cam And filter...

    I know...