If you don't put the sensor in the pan you can place it where the OD cutout sensor is. Or get a dipstick sensor (not recommended).

Forget what they're called, but NAPA can connect your steel to flex hose with a permanant coupling if that helps any, but after all that trouble it defeats the simplicity of the barb fittings huh? Use the OD cutout and its plug & play.

Do you have a tach? My truck is going about 60-65mph in the sweet spot of the powerband. I only drop out of OD when the trans temps get close to 200* and that hasn't happened since the underbed cooler.

 

Glad I found this thread! I'm doing that exact thing this weekend...installing a tranny temp gauge. According to the instructions in my US Gear pamphlet that came with the gauge, it states to "find the spot in the return line of the transmission oil cooler that is closest to the transmission." That is where it states to mount the temperature sender?? Is this correct? The way I'm reading y'alls posts it seems like you mounted your sender in the line going TO the tranny cooler? Maybe I'm reading it wrong

Also, above you wrote I can put the sensor where the OD cutout sensor is....what then happens to the OD cutout sensor?? And what it is for?

Eventually, I hope to do the 2nd gen tranny conversion, get a new TC, pan mounted oil sensor, etc. but for now I'd like to mount my sensor somewhere in one of the lines.

Thanks!

 

One more thing....is the transmission pan the same on the A518 as on the 47RH? I'm considering perhaps getting a tranny pan with built-in bung for the temp sensor, provided I can reuse that pan on the 47RH when I do the conversion?

 

I can't remember if the OD sensor is on the in or out line but its right at the tranny. It knocks the truck out of OD at 180* so its kind of a mute point switch , It has to stay wired so most just wire-tie it up out of the way.

The tranny pan bung is the way to go, especially if you get an extra deep one too. I think if you look at Summit you can tell which trannies use the same pan by application.

 

Not only does that sensor take the OD out at high temperatures, it also disallows the OD when the trans fluid is very cold, such as start-up. That sensor is plumbed into the HOT fluid line as I described above.

It'd be contradictory to take it out of the equation if you're concerned about the trans enough to put in a guage and deeper pan.

 

Do you know off hand if the tranny's have the same pan (518 and 47RH)? What did you have to pay for yours? I've got the guage mounted up in my dash pod...just need to put the sensor somewhere now!

 

I use this one as it was the lesser expensive of an aluminum +4qt capacity ~ http://store.summitracing.com/partde...5&autoview=sku

I just drilled and tapped a hole up front ~



Such that the sensor is down low in the fluid ~



I'm not sure if it'll fit a 47RH as there may be some acronym's overlapping. ?


Just to help, here's an image of the wiring with the trans. You can see the pipe in question where it says "Thermal Switch". That's the OD fluid temperature switch. ~

 

Nice!! According to the link it should fit the "618", which I believe is the 47RH. That way I can use it now, and reuse once I upgrade to the 47RH. I do hope to do the 47RH swap sometime in the near future....I just want to wait until I get my lift installed as I really do not want to do it on my back.

 

look for some compression fittings Swagelok might make a adapters for the piece you have http://www.swagelok.com/search/find_...0000212/type-1

 

Interesting, I did not know that it keeps it out of OD at low temps too. Unplugging it in cold weather could cause you to lose OD for a while then huh?

And earlier when I typed that it cuts it out at 180* that was supposed to be 280* but my finger missed.

 

The trans temp sensor doesn't disallow OD when cold. What disallows OD is the engine coolant sensor. It has to be at least 60*. The trans temp sensor, I think, cuts out the OD at 280*. Way too hot.