best trans temp sensor location?
Fleet Owner
Joined: Aug 2005
Posts: 23,668
Likes: 301
From: Easton,Ks
The test port in the side of the transmission.
That will tell you the temp of the transmission.
The oil leaving the transmission will get heated up by the TC and you will not know the temp of the transmission.
The oil in the pan has already been cooled and came from the return line from the oil cooler.
That will tell you the temp of the transmission.
The oil leaving the transmission will get heated up by the TC and you will not know the temp of the transmission.
The oil in the pan has already been cooled and came from the return line from the oil cooler.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,739
Likes: 2,669
From: SE Florida
More or less that's true. Unless you're going to find a way to put a sensor in the middle of the trans you're not going to get a better reading than the test port.
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Senior User
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From: Sonora,Ca
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Senior User
Joined: May 2015
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From: Sonora,Ca
Ok i have a update. I installed a autometer trans temp guage and put the sender in the test port. Went for a 20 minute drive, empty, (including hilly roads) and saw 210 on the guage. Does this seem a little hot cuz i also have a aux trans cooler too. Also the fluid that passes by the test port; does that fluid come out of the TC the go right past that port leading to see a higher temp?
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Senior User
Joined: May 2015
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From: Sonora,Ca
Yes sir. Both coolers are hooked up with no signs of blockage. It took about 15 minutes to reach that temp with about 8 of those minutes going uphill. The rest was flat. Total trip was about 20 minutes.
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From: Sonora,Ca
It was the autometer z series trans temp guage, autometer dual pillar guage pod for 1987-91 ford and a low profile sender unit also from autometer
Elder User
Joined: May 2007
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From: NY (not the city!!)
Thanks! That's the gauge I was looking at. Where did u get the power from? I was thinking an open spot on the fuse panel on the drivers side. I would put the gauge on the dash. Did u use the green bulb cover? I was just thinking of doing this and your thread was perfect timing. Thanks again
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Senior User
Joined: May 2015
Posts: 282
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From: Sonora,Ca
Thanks! That's the gauge I was looking at. Where did u get the power from? I was thinking an open spot on the fuse panel on the drivers side. I would put the gauge on the dash. Did u use the green bulb cover? I was just thinking of doing this and your thread was perfect timing. Thanks again