January 16, 2014
Honda/Acura 4-speed (3-shaft) and 5-speed transmissions often exhibit soft shifts and/or low line pressure rise. These concerns can be caused by incorrect or soft factory calibration of the clutch pressure control solenoids (CPCS), and further aggravated if there is line pressure leakage within the transmission. The PCM controls shift feel and overlap through CPCS A and B in conjunction with shift control solenoid C. Adjusting CPCS A and B can result in firmer shifts and increased line rise. Sonnax has developed pentagonal-shaped solenoid adjustment tool 88950-T to fit the recesses of solenoid adjuster screws.
Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.
I recently purchased your solenoid adjustment tool for my 1998 Honda Accord 3.0 4-speed automatic with 173,000 miles on it. It had been flaring so I adjusted the "B" – still on the car – 3/4 turn counterclockwise. The flaring is 99% gone and the shifting is much smoother. Thank you so much.M. Steenwyk