Engine/Transmission (1998.5 - 2002) Trans Question

[ASimpson]

I HAVE A transmission TEMP QUESTION AND FOUND THE FOLLOWING IN ANOTHER POST. THIS IS REGARDING THE TEST PORTS ON THE PASSENGER SIDE OF THE transmission.





If you are going to use a test port, use the one on the side of the body of the transmission. The most forward one is on the second gear (front band) piston. Oil does not flow there in any gear except 2nd. The one in the rear is on the rear band piston. Same problem. The center one is line pressure which will give you a pretty good reading. The cooler line is the best place



I HAD A transmission MECHANIC TELL ME THE VERY SAME THING THAT IS POSTED ABOVE. IF THIS IS TRUE WHY DOES MY GAUGE FUNCTION NORMALLY AND IT IS INSTALLED IN THE FRONT TEST PORT. IT WILL CLIMB WHILE DRIVING DOWN THE ROAD IN DRIVE AND O/D UP TO 160-170 DEGREES AND WHEN I PUT IT IN PARK IF I LET IT RUN IT WILL CLIMB ON UP TO 190 IF I LET THE TRUCK RUN LONG ENOUGH. . JUST CURIOUS ABOUT THIS THANKS ADAM

 

[ASimpson]

dang did i stump everyone thats a first... ... .

 

[inarush76]

actually the test port on the front servo is for second gear release/third apply oil pressure. There is not a port for second gear apply. To test second gear apply oil you would have to drill/tap in apply area.

HTH

James

DTT builder/installer

building transmissions since '74

 

[ASimpson]

So If A Person Put The Temp Gauge Sensor There It Should Function Properly ??

 

[Fishin Guide]

The reason the gauge functions is because of ambient heat.



Simply, the heat from the oil in heats the case and shows on your gauge. You hit lockup, the case temp eventually drops with oil temp reduction and the truck getting a cool blast of air from underneath.



The problem is this. The gauge is not terribly accurate in this position. More importantly, the speed of the temp changes are not seen. So, you may hit 270 degrees on the output line, but your gauge still says 180 degrees. It just can't reat fast enough.



Even the pan would be a better location than a test port. At least there you could monitor fluid temp. But the best location IMO is still the output line.



One word of caution. A buddy of mine installed one of the compression type "T" kits in his output line. It worked fine for over 40K, then it blew. He lost his trans. So, a cheapie gauge kit cost him over $5K.



Dave

 

[ASimpson]

so if a compression tee in the line isnt the answer what is???????? ideas???

 

[Fishin Guide]

so if a compression tee in the line isnt the answer what is???????? ideas???

There is a factory crossover line that is available as a direct bolt in. It is actually used in earlier trucks and has a sender port built in.



IMO this is the best way to install a temp sender.



Dave

 

[ASimpson]

Would You Or Anyone Happen To Know The Part Number For This Crossover Line. Thanks Adam

 

[AWray]

The line is for a '94-'95 pressure line from the trans to the heat exchanger. The updated line will also replace the plastic quick-connect fittings that will fail sooner or later.

 

[ASimpson]

So Do I Just Ask For That Or Does Someone Have The Dodge Part Number. Hate To Be A Pia Just Trying To Make The Call To The Dealer Go As Easy As Possible.