I'll go first, trans question

[farmtruc]

Hey Joe,

There is a pressure control soleniod in the trans that controls the shift pressure when the trans shifts. Just like the old vacuum modulated tranmissions with the vacuum line coming from the intake to the trans.

Well, since there is no vacuum to adjust on these new 4L60E's, how would i go about adjusting the pressure? Can the soleniod be adjusted, is there a setting on the soleniod to increase pressure?

thanks,


allen :wink:

[C383dfi]

There are two ways of increasing circuit pressure. First, the messy involved go ahead and change fluid and filter way. While the pan is off, the valve body will have to be dropped. ( Only if you don't have easy access to the torx setting screw behind the pressure control solenoid.) Once there, turn the screw clockwise 1/4 to 1 full turn. 1/4 being firm, to 1 turn knock all your shit off the dash and pop the lid of your big gulp right in your crotch. Second, the TPS sends a voltage from .7 to 4.50 to the pressure control solenoid via the PCM. You can purchase a B&M shift enhancer that splices between TPS and PCM. This unit has three positions. Center being normal, 1, firm or towing, and 2 being that get it in the crotch thing. This way is chea p and anyone can do it. Don't get me wrong, there is a lot of guys that can tackle the first option. Gotta go.