trans temp gauge sending unit
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trans temp gauge sending unit
how do i hook up a transmission temperature gauge sending unit. i have a 94 trans am which im pretty sure has the 4L60E (its an automatic). With the sending unit is there already a unit that i can tap into to or do i have to tap into the pan.
Thanks alot guys
Thanks alot guys
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so pressure port definately sounds like the easiest way, cause i really dont want to weld my pan. but what should the trans temp be around. i have an a4 if that matters
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Most sending units are 1/8 NPT which is a tapered thread. I would recommend a little teflon tape. For those not wanting to weld, get a 1/8 NPT bung and pull your pan off and clean it, then go to your local muffler shop and have them seal it with a bead for a few bucks. Its worth it to have a pan reading as I believe this is the best average temp of the trans as a whole. From the pan I see about 120 in cold weather, 140 in warm weather and 170-180 in hot weather.
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Pressure port is better place the go then the pan. I tried both. Pressure port was about 15 degrees off from what PCM said. Pan was more like 25-30 degrees off. Id stick with pressure port.
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We arent seeking the pcm's approval of our gauge reading. We should be seeking the average temp of the tranny to indicate how effectively our cooling system is working. The pan is better suited for this. But if the port makes you feel all warm and bubbly then whatever....
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We arent seeking the pcm's approval of our gauge reading. We should be seeking the average temp of the tranny to indicate how effectively our cooling system is working. The pan is better suited for this. But if the port makes you feel all warm and bubbly then whatever....
+1 ROTF
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Vince, the reason why some people crack the case when using the pressure port (and you may already know this) is because the pressure port is a 1/8 straight thread. The sending units are 1/8 National Pipe Thread which is tapered like a triangle. Effectively you are wedging a triangle into a hole the shape of a cylinder. Thats what causes case cracks bc thats not the right way to do this. Seems like anyone who uses the pressure port is just plain being lazy. What I did with my pan when I added my bung, I added a seperate drain too. It was another 1/8 NPT bung and matching 1/8 NPT plug. That way from there on out I never had to drop a trans pan that was full of fluid. So I accomplished two things.