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Home >> Porsche >> 1985 >> 944 Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Overhaul - A/T - AUDI 087, 087E, 089 >> Testing >> Road Testing

Road Testing

  1. Before road testing, ensure that fluid level and condition are correct. Check control linkage adjustments and correct as necessary. During test, transmission should upshift and downshift at correct speeds. See SHIFT SPEEDS (MPH)  .
  2. Shift speeds may vary slightly due to production tolerances or tire size. Quality of shifts is most important factor. All shifts should be smooth, responsive, and with no slippage or engine speed runaway.
  3. Slippage or engine runaway in any gear usually indicates clutch, band, or brake problems. Slipping unit in particular gear can be identified by noting transmission operation in other selector positions and comparing which internal units are applied. See Figure .
  4. This process of elimination can be used to detect any unit which slips and to confirm proper operation of good units.
  5. Practically all conditions may be caused by leaking hydraulic circuits or sticking valves. Unless definite problem exists, DO NOT disassemble transmission until hydraulic pressure test has been made.
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