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Hi wanted to know what will cause my 2008 Ford F-250 with a 5r110w transmission to have a 185 psi High line pressure at idle.
Pressure test needle move up and down when I shift btw gears.

Truck also has about 45sec reverse delay on and off intermittent delay on drive.
Once engaged truck run great but one time failed to engaged into drive or reverse.
I change the fluid and filter ...Fluid level and PC-A line pressure solenoid tested normal.
Do I need to change the pump maybe blown piston?
 

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Well this sounds similar to when my TC failed and caused the pump to mess up and it had metal shavings clogging the lines to the cooler and the pump was just cycling that all through the trans. Had to clean the solenoids flush several times, new pump. So, maybe the lines are clogged?
 
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