e4 od trans 200 psi at idle

[7.3 powerstrok]

ok

 

[franklin2]

When the computer sees a problem and goes into a "limp" mode, doesn't it set the pressure high in the tranny to prevent damage? Do you have any codes?

 

[trackspeeder]

Boost valve could be sticking.

 

[trackspeeder]

EPC solenoid can do that too. The PCM should detect that issue and set a code.