Trans cooler lines
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Joined: Jan 2001
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From: Virginia
When I installed the tranny oil cooler on my truck, they said to start it from an overnight sit, and run the engine for I believe about a minute or some very short time. Then they said to get under the truck right after you stop the engine and feel the tranny lines. One will be warm and one will be cool. The warm one will be fluid coming from the tranny and the cool one will be the return to the tranny.
I coud not believe it, it actually worked and you could feel a difference even after such a short period of running it, not even moving the truck out of park.
I coud not believe it, it actually worked and you could feel a difference even after such a short period of running it, not even moving the truck out of park.
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Senior User
Joined: Jan 2007
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From: SE Alabama
Thats some pretty quick heat!
I just installed a trans. temp gauge. I installed it on the feed line for the radiator instead of the return line which carries the cooled fluid. How fast should I expect the transmission to warm up? I drove the truck around for about 5 miles or so. Shifted in and out of o/d a few times. The engine got up to 170*F but the gauge onyl got up to 100F, maybe 110F at the end of the trip. Does this sound normal or do I need to do some troubleshooting with the gauge?
Thanks Mr. Franklin
I just installed a trans. temp gauge. I installed it on the feed line for the radiator instead of the return line which carries the cooled fluid. How fast should I expect the transmission to warm up? I drove the truck around for about 5 miles or so. Shifted in and out of o/d a few times. The engine got up to 170*F but the gauge onyl got up to 100F, maybe 110F at the end of the trip. Does this sound normal or do I need to do some troubleshooting with the gauge?
Thanks Mr. Franklin
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Senior User
Joined: Jan 2007
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From: SE Alabama
Originally Posted by Franklin2
Don't really know what the temp of the tranny fluid should be? Maybe someone else has a tranny temp gauge and they could tell you what theirs runs.
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Joined: Jun 2004
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From: Niceville, FL.
I have an old Faria transmission temperature gage on my '83 F350 (460/C6) and it runs about 160-165 deg. F. unloaded and about 180-185 deg. F. loaded. I checked my gauge readings against readings from my thermocouple type refrigeration temperature gauge with the thermocouple sensor clamped about 1" from the Faria sensor on the line from the transmission to the cooler and there was only about +2 deg. F. difference between the two (Faria higher) at 160 deg. F. indicated on the Faria. That's with the recommended 195 deg. F. engine thermostat. I've noticed that the engine reaches maximum operating temperature much faster than the transmission especially with no load on the truck. To get a real feel for what's happening you may need to put 500 or so pounds in the truck (or a loaded trailer behind) and take a 20-30 minute trip at highway speeds.
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From: SE Alabama
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From: Niceville, FL.
About 3-4" from where the line FROM the transmission enters the top port of the radiator cooler unit. There is a brass compression type "Tee" in the line and the sensor threads into the side port of the "Tee".
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