Where to put a temp sensor on a C 4
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Where to put a temp sensor on a C 4
I have a 1977 F100, 4.9, C 4 trans. Can any one tell me the best place to put a transmission temp sensor? I will be doing some towing this summer and would like to keep an eye on it. Yes there is a trans cooler installed. Thanks.....
Posting Guru
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From: Coal Country, ND
I just put one in my C6 yesterday. Put it in the trans pan, I think it'll give a person a better idea of actual oil temp. I was changing the fluid/filter, and adding a drain plug anyway so while I had it off I just drilled a hole in the side of the pan a brazed a fittting into the hole, and ran the line for the gauge.
Cargo Master
Joined: May 2003
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From: Earth
Actually, you want it on the exit line of the tranny where the fluid is being sent to the cooler (before the fluid is cooled). This will give you an indication of the maximum temps the tranny is experiencing.
http://www.tciauto.com/tech_info/tra...expectancy.htm
http://www.tciauto.com/tech_info/tra...expectancy.htm
Elder User
Joined: Jul 2005
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From: North Texas
Fatfender has the right answer. You want to know the maximum temperature to keep the transmission fluid from breaking down.
Think of it this way, if you put your water temp guage on the outlet of the radiator, and it reads 180 degrees, and you boil over cause the engine is at 235, it did you no good. If you put it in the manifold, and it hits 210 and is still climbing, you know you're in trouble and can shut it down.
Think of it this way, if you put your water temp guage on the outlet of the radiator, and it reads 180 degrees, and you boil over cause the engine is at 235, it did you no good. If you put it in the manifold, and it hits 210 and is still climbing, you know you're in trouble and can shut it down.
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From: Coal Country, ND
The instructions that Autometer sends with the gauge that I got they say to put it in the pan sump. That is the most accurate reading of "transmission temperature", not the fluid temp. If the fluid is getting hot you'll see it on the gauge regardless of where it is tapped in.
If your running a mech. gauge like I did, good luck trying to get that big temp sensor probe to fit in a cooler line, the pan was the easiest, cleanest, and most accurate way that I (and Autometer) could come up with.
No disrespect but just my point of view.
If your running a mech. gauge like I did, good luck trying to get that big temp sensor probe to fit in a cooler line, the pan was the easiest, cleanest, and most accurate way that I (and Autometer) could come up with.
No disrespect but just my point of view.
Last edited by unrulee; Mar 26, 2006 at 07:11 PM.
Cargo Master
Joined: May 2003
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From: Earth
Originally Posted by unrulee
The instructions that Autometer sends with the gauge that I got they say to put it in the pan sump. That is the most accurate reading of "transmission temperature", not the fluid temp. If the fluid is getting hot you'll see it on the gauge regardless of where it is tapped in.
If your running a mech. gauge like I did, good luck trying to get that big temp sensor probe to fit in a cooler line, the pan was the easiest, cleanest, and most accurate way that I (and Autometer) could come up with.
No disrespect but just my point of view.
If your running a mech. gauge like I did, good luck trying to get that big temp sensor probe to fit in a cooler line, the pan was the easiest, cleanest, and most accurate way that I (and Autometer) could come up with.
No disrespect but just my point of view.
It is a big job plumbing it inline. You have to get a T-Fitting, cut your line, double flare it and plumb everything back in. The reason you would want to monitor the coolant temp on its way to the cooler, (right after it exits the tranny), is because this is where the coolant is the hottest. I'm also running an Autometer tranny temp gauge.
Monitoring your fluid temps will tell you the condition of your tranny and if it is running too hot. Did you check that link I posted?
Last edited by 53fatfndr; Mar 26, 2006 at 07:46 PM.
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Posting Guru
Joined: Aug 2005
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From: Coal Country, ND
Maybe I don't see where you're coming from.
And yes I checked the link.
I'll agree with you that checking the temp as it comes out of the trans is more accurate, I was just saying that for ease go with the pan. If it's getting hot you'll see it, you'd just see it sooner if your tapped in before the cooler. For me it wasn't worth the hassle.
And yes I checked the link.
I'll agree with you that checking the temp as it comes out of the trans is more accurate, I was just saying that for ease go with the pan. If it's getting hot you'll see it, you'd just see it sooner if your tapped in before the cooler. For me it wasn't worth the hassle.
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