Which fluid/test port do i put the sender for the Trans temp gauge? There is no sensor in the hot line like there is on a 91.5-93 A518...

Truck is a 90 D250 with a 727.....The pan has a sender already in it from a previous gauge but I really wanna put it where the fluids the hottest.....

Looks like there is 2 ports on the driver side of the trans, they have plugs in them.

 

Those are pressure testing ports. Do not use them. Sticking a probe in there may cause problems in the trans. Yeah guys have done it, but the long term problems came later.

Better off putting a Tee in the trans line if you must do this. Frankly it's a waste of time.

 

How do you figure it is a waste of time, just wondering.

I would like to know ahead of time so I could take action before my transmission goes into meltdown.

 

Ok I will not use those ports, if worst comes to worst I will put it in the pan.

Either way It's getting it. I hate having a gauge that's not hooked up, and it's not my truck I am doing it for someone else.

And how is it a waste to know Trans temp. in a high performance truck that tows? This ain't no 400lb ft cummins no more...

 

In the pan is where I always go

 

If you smell something funny, let off

 

I got stuck once with a 727 in 4 high. Before I got out the fluid was puking out the dipstick. I think it was plenty warm.