Trans temp question

[Damn Dummy]

I have 2000 F350 automatic dually, 153000 miles. I install trans temp gauge and after a month, the gauge barely reads over 100deg. I have driven it with no major load on it(towing, etc.) but I figured it would go above 100deg. I triple checked the sending unit, any loose or broken elec. connections, I checked for a good chassis ground. I read the temp should be 75-100 plus ambient. I live in San Diego County, never too hot or cold. Does this sound normal? Any info is much appreciated. Thanks in advance.

 

[bushpilot]

cant vouch for the 4r100 tranny but mine runs just under 165* when its @ op. temp.

perhaps your gauge is bad ?

could the tranny be low on fluid (and not picking up the temp) ?

 

[Damn Dummy]

I checked the fluid already to make sure that wasn't it. In terms of the gauge being bad, that would be just MY luck. I'm going to re-check everything again and let you know.

 

[silverF250]

Sounds like you have a bad guage. Is the guage located near the return from the cooler? I don't have any so I don't Know.

 

[trackspeeder]

Could be a bad sender.

 

[arctic]

Mine is the same. It used to run about 150deg without a load and runs around 100deg now since i put in Amsoil. Although it will get warmer when i am pulling with it. Try pulling with it and see if the tranny runs a little warmer.

 

[bushpilot]

youre saying just by using amsoil
the tranny temp dropped 50* (f) !?!

did the gregg evans accumulator valve
body having any effect on cooling ?

 

[arctic]

good point!! They were both installed at the same time, so between the two the tranny temp did drop 50deg

 

[h2guy]

When I'm in SDiego with my Sons, my (empty) temps run 130-140 at speed on the freeways.

'01 Lariat Dually

 

[Damn Dummy]

I'll try towing something and see what happens. Thanks for the replies.