TC lock up pressures inside tranny??? - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 5 (permalink) Old 09-05-2007, 09:34 PM Thread Starter
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TC lock up pressures inside tranny???

What are the highest pressures you might see at the pressure port? Need to get a sender for the Drive Oil Pressure and not sure if a 0-300 or 0-400 will work.

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post #2 of 5 (permalink) Old 09-05-2007, 11:08 PM
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Re: TC lock up pressures inside tranny???

If you are going to continuously monitor the pressure, I think you are going to be in the 70-170 range.

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post #3 of 5 (permalink) Old 09-06-2007, 12:15 AM
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Re: TC lock up pressures inside tranny???

Quote:
Originally Posted by CSIPSD View Post
What are the highest pressures you might see at the pressure port? Need to get a sender for the Drive Oil Pressure and not sure if a 0-300 or 0-400 will work.
You asked two different questions, whether you know it or not. The title asks for TC lockup pressures. That's going to be in the 120 PSI range. Measuring it will be a real trick. You need to remove the trans, disassemble it, and plumb in some high dollar transducers to be able to read it.

Then you ask about putting a sender in the pressure port. That isn't lockup pressure, it's line pressure. Line pressure can get to about 330 PSI in reverse at stall speed.
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post #4 of 5 (permalink) Old 09-06-2007, 01:16 AM Thread Starter
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Re: TC lock up pressures inside tranny???

Thats what I am trying to watch, so you will see as much as 330-350? Thats what I was thinking to begin with, so my 0-400 psi gauge is right.

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post #5 of 5 (permalink) Old 09-06-2007, 01:30 AM
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Re: TC lock up pressures inside tranny???

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Originally Posted by CSIPSD View Post
Thats what I am trying to watch, so you will see as much as 330-350? Thats what I was thinking to begin with, so my 0-400 psi gauge is right.
At stall speed in reverse you may see that pressure. Thats done holding the brake and reving the engine to stall RPM in reverse. Most Tranny diagnostics use the 0-400 gauge. That's Ford spec gauge for pressure testing the 4R100 and E4OD.


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