rosaaen89 Posted August 26, 2014 Share Posted August 26, 2014 Hey everyone i was wondering if anybody has an idea how to get a mechanical water temp gauge working? It has a liquid filled autometer water temp gauge installed in the dash but is not hooked up. Has a fairly large plug in the engine bay but I have no idea where to install it. Or if I would be better off just switching to a electrical water temp gauge? Quote Link to comment Share on other sites More sharing options...
ryant67 Posted August 26, 2014 Share Posted August 26, 2014 I run a mechanical water temperature gauge, and quite like it because I know it isn't going to fail and will read accurately - and I can also watch the temperature when the engine is off, which can creep up quite a bit sometimes. You will be screwing the plug for the temperature probe into the thermostat housing, which is where the water flows from your cylinder head back into the radiator. The sensor screws in right below the water hose. You will need to have an adapter for the autometer screw plug as it is the wrong size for this hole - auto meter part number 2275 (on summit: http://www.summitracing.com/int/parts/atm-2275) Quote Link to comment Share on other sites More sharing options...
ryant67 Posted August 26, 2014 Share Posted August 26, 2014 Oh, just saw that this is posted in the Toyota L6 forum - ignore me. The sensor will still plug in where the water temperature sensor is though, likely by the thermostat housing, might still need an adapter too. On a modern engine, I think I would be more inclined to run an electronic gauge though. Quote Link to comment Share on other sites More sharing options...
rosaaen89 Posted August 26, 2014 Author Share Posted August 26, 2014 Has a 2jz so you think a electrical temp gauge would be better and easier installation? When I bought the car he had the mechanical one mounted in but not hooked up. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted August 26, 2014 Share Posted August 26, 2014 (edited) I ran mechanical on an L6. Was disappointed that I had to go electric with the LS motor. The mechanical was accurate enough that I could see the thermostat open and close. Get the adapter and use it. Just take the thermo housing to the hardware store. It's all NPT fittings IIRC. EDIT--Oh, and don't kink the tubing. You can bend it back and forth and zip tie it up if the line is too long, but don't kink it. Edited August 26, 2014 by JMortensen Quote Link to comment Share on other sites More sharing options...
rosaaen89 Posted August 27, 2014 Author Share Posted August 27, 2014 So the adapter goes onto the thermo housing than the plug goes into that? Sorry if I sound dumb just never installed one before. I'll upload a pic of it too. Quote Link to comment Share on other sites More sharing options...
rosaaen89 Posted August 27, 2014 Author Share Posted August 27, 2014 That is the plug for it. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted August 27, 2014 Share Posted August 27, 2014 The probe is brass if I recall. Yours already has an adapter on it. Unscrew the long hexagonal thingy off of it and throw it away or put it in a drawer. Quote Link to comment Share on other sites More sharing options...
rosaaen89 Posted August 27, 2014 Author Share Posted August 27, 2014 The hexagon off the thermo housing than? Quote Link to comment Share on other sites More sharing options...
JMortensen Posted August 27, 2014 Share Posted August 27, 2014 No the one on the probe in your hand in the picture. The probe has a short nut built into it with exposed male threads and the probe sticks out from there. What you have is a 1.5" or 2" long hexagonal adapter for some other kind of vehicle screwed onto the probe. Or at least, that's how it looks compared to my Autometer probe. Here are the Autometer instructions if that helps: http://www.autometer.com/download_instruction/0318J.pdf Quote Link to comment Share on other sites More sharing options...
rosaaen89 Posted August 27, 2014 Author Share Posted August 27, 2014 Ok will do that and see if i can get it to work. Quote Link to comment Share on other sites More sharing options...
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