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Home >> Jeep >> 1983 >> Scrambler Base, 4.2 C, Standard, T4 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Diagnosis & Overhaul - 727, 904, 998 & 999 >> Testing >> Stall Test Results >> Stall Speed Below Specification

Stall Speed Below Specification

  1. Low stall speeds with properly tuned engine indicate torque converter stator clutch problems. Road testing will be necessary to identify exact problem.
  2. If stall speeds are 250-350 RPM below specifications and vehicle operates properly at highway speeds, but has poor through-gear acceleration, stator overrunning clutch is slipping.
  3. If stall speed and acceleration are normal but abnormally high throttle opening is required to maintain highway speeds, stator clutch has seized (models without lock-up converters). Both of these defects require replacement of torque converter.
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