4r70w test port for Temp Gauge - Forums at Modded Mustangs
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post #1 of 4 Old April 13th, 2009, 09:12 AM Thread Starter
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4r70w test port for Temp Gauge

Ok.... I herd and read on the net that i can screw my temp probe for my transmission temp gauge into a test port on the transmission? Does anyone know where I can find this on my tranny?... This is a 4r70w tranny in a 2001 GT.. Thanks guys..
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post #2 of 4 Old April 13th, 2009, 11:30 AM
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Look on the case right above where your 1-2 accumulator piston is. There should be a plug threaded into the case. No guarantee that its gonna work as I have never heard of this before and like you said its something you read on the net so who knows, BUT there is fluid flow to this plug (so youll be able to read temps) as this is where you run the fluid line on the tail shaft lube mod. Weather its going to be the correct size threads for the temp sensor im not sure.

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post #3 of 4 Old April 13th, 2009, 11:40 AM Thread Starter
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Found this:

03-21-2009, 08:31 AM
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Vehicle: 2001 Ford F-150
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Trans temp sender location (4R70W)


I have read over several threads on where to put the sender for the trans temp. It seems the overall location has been in the trans cooler line going into the radiator. I have also read to put it in the port on the side of the trans. Just wondering what would give the best readings so that I'm getting good temp numbers. Just curious as I recently bought a newer and bigger boat and tow it with overdrive off. I also just had 4.10 gears installed to help with the pull. It currently turns about 2600 rpm at 60 mph. Just want to make sure I'm not tearing anything up. Thanks for the response. Register today or sign-in to remove these ads!

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#2 03-21-2009, 03:31 PM
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What size tires and year truck? Also Just try to stay around 180 degrees and I installed mine in the pan with a bung. It has to be welded to the pan but not a bad project.
2001 5.4 Screw 4x4,4 inch lift,K&n Cold air intake,
Airaid spacer,Lightning grill,A.R.E Tonneau cover,Autometer Tranny temp gauge,Kanamari ram air hood.

#3 03-22-2009, 08:20 AM
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Sorry, it's an 01' Screw with the 5.4L. The tire size is 275/55/20. Thanks for the info.

#4 03-22-2009, 09:05 AM
Mark Kovalsky
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I like the sender in the test port. It gives temp readings within a few degrees of the pan, sometimes higher, sometimes lower, but always close.
Former Ford Automatic Transmission Engineer, 1988-2007

#5 03-22-2009, 10:54 AM
Darrin Burch
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Ideally you would be able to monitor it from a couple locations. Since I deal a lot with performance stuff, I like to see the temp of the fluid coming out of the transmission.


#6 03-25-2009, 08:10 PM
str8t six
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i put mine in the test port. works great!
2001 F150 5.4 ext. cab 4X4, 6" RCD susp. lift, PA body lift, 35" Nitto Mudgrapplers, Superchips Tuner, 3.55 gears
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post #4 of 4 Old April 13th, 2009, 12:03 PM
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problem with the test port is that it is a dead end fluid port. It will be slow to respond to temp changes. ideally you want it where there is flow,like the trans cooler out line. my choices would be the cooler line first,pan second, test port last. they all will work

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