![]() Line pressure and the torque-converter clutch each have their own dedicated solenoid. There are no other shuttle valves in the solenoid body.įive solenoids control all shifts. A solenoid and a pressure switch are dedicated to the function of each clutch pack, except the forward clutch, which is controlled by the manual valve. This is due to a total redesign of the control valve body. There were no lags between shifts, and every shift was very positive. Looking for more technical transmission info like this? Be sure to sign up for the Transmission Digest newsletter to have it delivered to your inbox once a week.ĪTSG’s perception of the 2003 Super Duty vehicle that we test drove was that shift performance is greatly improved over the 4R100 transmission. ![]() In hot mode the transmission will shift 1st, 2nd, 3rd, 5th (ratio 1.00), 6th. All sound familiar? In cold mode (below -15☌ (5☏), determined by the transmission-fluid-temperature sensor), the overdrive clutch is engaged in 3rd gear to provide a ratio of 1.09 for 4th gear, and the transmission will shift directly from 4th to 6th gear (overdrive), which has a ratio of 0.71. 3rd gear provides a ratio of 1.54, the same as the 4R100’s second gear. For 2nd gear the overdrive clutch is applied to provide a ratio of 2.20. The ratio for 1st gear was changed from 2.71 to 3.09. The TorqShift is a five-speed, rear-wheel-drive unit that actually has six forward speeds with ratios depending on whether the transmission is operating in hot or cold mode. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |