TH350 Line Pressure

Chad E532 · 03-30-2011, 11:49 AM

This ties into another thread discussing the use of a hydraulic pressure switch for the 2-step activation on the brake system.
Since you need a safety switch in the circuit to only activate the 2-Step in low gear I like the idea of putting another pressure switch in the transmission low gear pressure test port to act as the safety. I see from the TCI website that line pressures would be in the 145-175 psi range when in gear.
But my question is will there be any residual line pressure once the car is in 2nd or high gear or does the pressure on the low port drop all the way to 0 psi?
I think this would be a more robust solution over putting a micro switch on the shifter safe guard the 2-Step from coming on when you don't want it to.
Thanks,
Chad

03-30-2011, 11:49 AM	#1
Chad E532 Member Join Date: Jul 2008 Location: Lindstrom MN Posts: 156 Likes: 7 Liked 54 Times in 7 Posts	TH350 Line Pressure This ties into another thread discussing the use of a hydraulic pressure switch for the 2-step activation on the brake system. Since you need a safety switch in the circuit to only activate the 2-Step in low gear I like the idea of putting another pressure switch in the transmission low gear pressure test port to act as the safety. I see from the TCI website that line pressures would be in the 145-175 psi range when in gear. But my question is will there be any residual line pressure once the car is in 2nd or high gear or does the pressure on the low port drop all the way to 0 psi? I think this would be a more robust solution over putting a micro switch on the shifter safe guard the 2-Step from coming on when you don't want it to. Thanks, Chad