Join Date: Sep 2006
Location: Las Vegas, Nevada
1-2 harsh shifting is indicative of a broken 1-2 shift accumulator spring. It's the floating gears that is a bad sign, could be as simple as a worn tps sensor, mlps (range sensor), or low fluid. On the more serious side it could need rebuilding. If your looking for firm non harsh shifts I would perform the jmod retaining both springs for the 1-2, change the fluid to mercon V, switch to the 96/97 pan and filter and test or replace the tps and range sensor.
-1996 Pearl White Thunderbird 4.6 Sport 4v with many mods:
Current Best: 13.583 @ 103.74 10/2014.
227hp/241tq measured on calibrated mustang dyno, tested at full vehicle simulation with inertia enabled, no number skewing.
-2001 White Ford F-250 Super Duty 6.8 V10, 4-door, 4x4, Limo Tint, BFG KO2's, Bilstein 7100 Remote Reservoir Race Bypass Shocks, 6" Spring lift, Kenwood Double Din, K&N Intake, FlowMaster Exhaust
Amber_Murder's Daily Driver.
-2005 White GMC Sierra 3500 6.6 Duramax, Dually, 4-door, 4x4, Limo Tint, BFG Commercial T/A's, Rancho RS9000XL Shocks, Kenwood Double Din, K&N Intake, Banks Monster Exhaust
Chris_Murder's Daily Driver.