So after lots of reading, I bought this for my 2001 4x4 4.0 SOHC Ranger (5R55E).


I went to my tranny guy today to make an appointment for install (I'm done doing stuff on my back) and he said, "If it was mine, I wouldn't install it. If the tranny works fine, I'll service it for you but I'd leave it 'as is'". Of course, he said he'd install it if I wanted.

The valve body was already replaced from the dealer, along with the gaskets that go bad. I'm just trying to eliminate the lag into reverse and have it hang onto 1st a little longer.

Anyone who has one of these installed, please let me know what you think and if it's improved things.

 

Shift kits are popular with the 4R and 5R transmissions, people like them, say the shifting is smoother and when it shifts is better

But not related to any delay going into reverse or any other "mis-shift" issues, just like your trans guy said, its not a "fix" for anything

Delay going into reverse reads like a pressure issue, does REVing the engine help it engage faster?

All automatics, run/shift using fluid pressure, forward gears need 110psi, reverse needs 160psi, so delay or loss of reverse is a common sign of lost pressure in the system
The pressure is usually lost in Valve body, by leaking seals or gasket or stuck valves

The front pump provides the pressure, it is connected to torque converts outside case so directly connected to engine, so front pump spins at engine RPMs, increasing engine RPMs increases pump speed and pressure

You will have an EPC solenoid, electronic pressure control solenoid, and I thnk it was adjustable
I am sure the transmission shop will check the pressures before and after service, and you can always ask them to

 

Thanks for reply, RonD. All great information.

 

Ron.D is a true wealth of information. Rather impressive posts