aleda Posted February 12, 2020 Report Share Posted February 12, 2020 Hi Troops - a quick question that I hope you can help with. My temperature gauge has been over-reading for some while and I ordered a new 85 degree temperature switch from RS Components. The packet has arrived and it states 100 degrees and 100 is printed on the switch itself. I've been on the 'chatline' to RS and it appears there is an error on their website specification for this item (it clearly states 85 degrees). RS components don''t have 85 degrees, they do have 75 degrees. I'm obviously no techie so not sure what to do? Any advice very much appreciated as always. Christine PS - she did 1500 miles to Angouleme and back last year - so chuffed. I didn't drive all the way! Quote Link to post Share on other sites
RogerH Posted February 12, 2020 Report Share Posted February 12, 2020 Hi Christine, Moss do a temp bulb that in theory should work Item 50 https://www.moss-europe.co.uk/shop-by-model/triumph/tr2-4a/cooling-system/radiators-hoses-fittings/water-pump-fan-fittings-tr2-4a-1953-67.html Send you RS Comp item back for a full refund. They will do this. Roger Quote Link to post Share on other sites
openroad Posted February 12, 2020 Report Share Posted February 12, 2020 Hi Christine, don't really have any techie advice, but I do have an original Guage if you want one. Cheers Conrad. Quote Link to post Share on other sites
RobH Posted February 12, 2020 Report Share Posted February 12, 2020 There seems some confusion here. Are we talking about a transmitter unit for the gauge or a temperature switch for an electric fan? That item 50 from Moss is a transmitter for a temperature gauge. Item 29 is a temperature switch. Quote Link to post Share on other sites
aleda Posted February 12, 2020 Author Report Share Posted February 12, 2020 Hi All - a little knowledge is dangerous? But I am trying to learn This is what I ordered from RS Components: Honeywell NO 15 A Bi-Metallic Thermostat. I was told its called a temperature switch. I had an electric fan fitted last year. The Thermo Switch is similar to the one from RS Components but I see a range of temperatures. Whats the betting I need the one that's out of stock? Appreciate knowing what you think I should order from Moss. Thanks for gauge Conrad but mine is ok (I hope) Cheers Christine Quote Link to post Share on other sites
RogerH Posted February 12, 2020 Report Share Posted February 12, 2020 Hi Christine. when an electric fan is fitted most people go for a new steel down pipe (item 29) with the integral boss for thermo switch (item 29A) https://www.moss-europe.co.uk/shop-by-model/triumph/tr2-4a/cooling-system/radiators-hoses-fittings/water-pump-fan-fittings-tr2-4a-1953-67.html However your thermo switch could work is you had a suitable flat(ish) area to attach it to. It would fit on an existing down pipe but not normally Roger Quote Link to post Share on other sites
trchris Posted February 12, 2020 Report Share Posted February 12, 2020 Hi Christine I have something similar to this fitted to mine ebay number 151054632193 easy to fit and you can manually adjust the temperature for the fan to cut in Chris Quote Link to post Share on other sites
RobH Posted February 12, 2020 Report Share Posted February 12, 2020 Ok I see where we are now. That Honeywell switch is no good for your application Christine. It opens at high temperature to break a circuit whereas you need one that closes to switch the fan on. What did you have fitted with the fan? Was it a switch that poked a sensor under a hose like this? If not and you have a pipe with the mounting boss either IM50250 or IMO50120 would be fine - a couple of degrees either way isn't important. Quote Link to post Share on other sites
mackev Posted February 18, 2020 Report Share Posted February 18, 2020 Hi Christine, I'm not so good at anything electrical, however I think the best way forward and to relive any problems is to go with Roger H suggestion. I live in a relatively hotter climate, in the winter I run the engine a little bit hotter(-with a Kenlowe-)and then change the thermostate for something a bit cooler in the summer to compensate for getting stuck in traffic. Possibly the best way for you, if you are still working on the car is to use a proper Kenlow variable switch. it is roughly the same as you have but as RobH states tthe honewell is working in reverse. Good luck and happy motoring Quote Link to post Share on other sites
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