Stall Speed Test: Notes
WARNING: This page is about a different car, the 2010 Ford Pickup, 2010 Ford F550 Super Duty, 2010 Ford F450 Super Duty, and 2010 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Carry out the Line Pressure Test prior to carrying out the Stall Speed Test. Refer to SPECIAL TESTING PROCEDURES . If line pressure is low at stall, do not carry out the stall test or additional transmission damage will occur. Do not maintain Wide Open Throttle (WOT) in any gear range for more than 5 seconds.
NOTE:
After testing each of the ranges, move the selector lever into the NEUTRAL position and run the engine at 1,000 RPM for about 15 seconds to allow the torque converter to cool off before continuing onto the next range.
NOTE:
If the engine speed recorded by the tachometer exceeds maximum specified RPM, release the throttle immediately. Clutch or band slippage is indicated.
NOTE:
The Stall Speed Test should only be carried out with the engine and transmission at normal operating temperatures.
NOTE:
Prolonged use of this procedure may set DTCs P0712 or P1783. After carrying out the Stall Speed Test, run On-Board Diagnostic (OBD) test and clear the DTCs.
The Stall Speed Test checks the operation of the following items:
- Torque Converter Clutch (TCC)
- Forward clutch
- Low One-Way Clutch (OWC)
- Overdrive (O/D) OWC
- Engine driveability concerns