saulet Posted May 15, 2019 Share Posted May 15, 2019 Hi, I’m from the french branch. I had to change the water temp sender on my Rover. The new one that looks and fits the same seems to send different info as the temp on the gauge is slightly higher. From normal to scary ... I was told the old senders (ref 6811-03) were not available anymore. Do you have the same issue in UK? Can you still get the « old » sender or do you have a solution to fix the values displayed on the gauge? Thanks for your help! Link to comment Share on other sites More sharing options...
SM25T Posted May 15, 2019 Share Posted May 15, 2019 Is your temperature gauge display marked Caterham, or Smiths or VDO ? The correct sender should be available from Redline Components. Phone +44 1883 346 515 sales@redlinecomponents.co.uk Link to comment Share on other sites More sharing options...
saulet Posted May 15, 2019 Author Share Posted May 15, 2019 Yes Caterham !! Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted May 15, 2019 Member Share Posted May 15, 2019 Bienvenue.I agree with Ian: talk to Redline.The new one that looks and fits the same seems to send different info as the temp on the gauge is slightly higher.Yes, it's possible that the resistance range of the sender doesn't match that of the instrument. There are a few common ranges but they're not standardised. We can probably work out here what you've got. Please could you add a photo of the original sender and your gauge, and tell us the year of the engine and which ECU you have. There's a current discussion of accuracy of gauges here.Jonathan Link to comment Share on other sites More sharing options...
saulet Posted May 15, 2019 Author Share Posted May 15, 2019 I'm trying to put pictures, I can not, is there a tutorial or how to proceed, thank you? Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted May 15, 2019 Member Share Posted May 15, 2019 There are now three different methods: two that upload and one that links to images on a remote server.Start with the Forum User Guide and let us know if you get stuck.Jonathan Link to comment Share on other sites More sharing options...
SM25T Posted May 15, 2019 Share Posted May 15, 2019 If you use an android phone, you need to click on the three dots in the top right corner of the screen then select "desktop site". Above the text box you will now see an icon with a horizontal line and an arrow above it. Click on that and add your photo. Link to comment Share on other sites More sharing options...
saulet Posted May 15, 2019 Author Share Posted May 15, 2019 Gauge Link to comment Share on other sites More sharing options...
saulet Posted May 15, 2019 Author Share Posted May 15, 2019 The probe that gives false information, temperature between 98 and 110 ° C (For Sigma ?) : Link to comment Share on other sites More sharing options...
saulet Posted May 15, 2019 Author Share Posted May 15, 2019 The one that gives the good values but unavailable here, in research under this reference 6811-03 or an equivalence !! Link to comment Share on other sites More sharing options...
saulet Posted May 15, 2019 Author Share Posted May 15, 2019 My caterham is a K serie buit in 2002. The temp gauge is the original one and the sender was changed. Since that, reading of the temp has changed : from cold to 90 degres, it takes 5 minutes and then it raises to be stable batween 95 and 100. Hot days and intensive use brings higher values which, if they were true, would indicate a serious cooling problem. Hopefully, with an older sender I was able to find, all is back to normal. The problem is that others have the same issu and we can’t find the proper sender. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted May 15, 2019 Member Share Posted May 15, 2019 The problem is that others have the same issu and we can’t find the proper sender.Redline part number, but one of the advantages of dealing with them is the knowledge as well as the parts.Full search of the archives, with at least one other story of a mismatched sender and gauge.Jonathan Link to comment Share on other sites More sharing options...
CageyH Posted May 15, 2019 Share Posted May 15, 2019 Caterham seem to have them in stock, so have you asked Marcassus if they have them? Link to comment Share on other sites More sharing options...
SM25T Posted May 15, 2019 Share Posted May 15, 2019 The new sender for the Rover looks like your first photo, with a circular nail head, but the standard connector still fits ... just at 90 degrees to the axis. It works ok on my 2002 Rover engine. Maybe the one you have is with a different output for the gauge of the Ford Sigma engine ? Talk to Chris at Redline. Link to comment Share on other sites More sharing options...
CageyH Posted May 15, 2019 Share Posted May 15, 2019 Smiths part number TT6811-03 for the original type. https://www.smiths-instruments.co.uk/temp-transmitters Link to comment Share on other sites More sharing options...
saulet Posted May 16, 2019 Author Share Posted May 16, 2019 Hi guys, With your information we found suppliers in France busy with the famous probe ... A big thank you for all your information Link to comment Share on other sites More sharing options...
CageyH Posted May 16, 2019 Share Posted May 16, 2019 Who is the supplier in France? Being in Toulouse it would be nice to know where I can get one if needed. Link to comment Share on other sites More sharing options...
revilla Posted May 16, 2019 Share Posted May 16, 2019 The new sender for the Rover looks like your first photo, with a circular nail head, but the standard connector still fitsThat was certainly true for a while but ones I've ordered recently seem to have switched back to the original design. Link to comment Share on other sites More sharing options...
saulet Posted May 16, 2019 Author Share Posted May 16, 2019 Oreca Link to comment Share on other sites More sharing options...
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