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Home >> Toyota >> 2003 >> MR2 C56 >> Repair and Diagnosis >> External Pages >> Different car >> Section 55 (Automatic Transmission Diagnosis - U140E & U140F) >> Performance Tests >> Stall Speed Test

Stall Speed Test

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 Toyota RAV4, 2002 Toyota Highlander, 2002 Toyota Camry, 2002 Lexus RX 300, and 2001 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Perform test at normal operating fluid temperature of 122-176°F (50-80°C). DO NOT continue test for more than 5 seconds.
  1. Testing is done to check overall performance of transaxle and engine by measuring maximum engine speeds in "D" and "R" positions.
  2. Block front and rear wheels. Connect scan tool to Data Link Connector (DLC) to monitor engine RPM. Apply parking and service brakes. Start engine. Place selector lever in "D" position. Fully depress accelerator pedal. Release pedal after 5 seconds.
  3. Record highest engine RPM. Repeat test in "R" position. Compare reading obtained to specification. See STALL SPEED SPECIFICATIONS  table.
  4. If stall speed is same for both positions, but less than specified RPM, engine output may be insufficient or stator one-way clutch is not operating properly.
    NOTE: If stall speed RPM is more than 600 RPM less than specification, torque converter may be faulty.
  5. If stall speed in "D" position is higher than specification, forward clutch may be slipping, No. 2 one-way clutch may not be operating properly, underdrive clutch may be slipping, or line pressure is too low.
  6. If stall speed in "R" position is higher than specification, direct clutch may be slipping, 1st/reverse brake may be slipping, line pressure is too low or underdrive clutch may be slipping.
  7. If stall speed in "R" and "D" positions is higher than specification, line pressure is too low, incorrect fluid level exists or No. 2 one-way clutch is not operating properly.
STALL SPEED SPECIFICATIONS

Application Specification (RPM)
Lexus
ES 300 2350-2800
RX 300 2325-2775
Toyota
Camry 2200-2500
Highlander 3.0L 2500-2800
Highlander 2.4L 2200-2500
RAV4 2530-2830