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Home >> Porsche >> 1985 >> 944 Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Overhaul - 087, 087E & 089 >> Testing >> Road Testing

Road Testing

  1. Before road testing, ensure that fluid level is correct and in good condition. Check control linkage adjustments and correct as necessary. During test, transmission should upshift and downshift at correct speeds. See SHIFT SPEED SPECIFICATIONS  table.
  2. All shifts may vary somewhat 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 any condition can be caused 'by leaking hydraulic circuits or sticking valves. Therefore, unless definite problem exists, do not disassemble transmission until hydraulic pressure test has been made.
SHIFT SPEEDS SPECIFICATIONS

Application Full Throttle Kickdown
Coupe GT, 4000S & 4000S Quattro
087
1-2 Upshift 19-28 40-42
2-3 Upshift 47-60 72-73
3-2 Downshift 34-47 68-70
2-1 Downshift 14-16 37-38
089
1-2 Upshift 20-28 34-37
2-3 Upshift 48-61 66-67
3-2 Downshift 35-48 62-64
2-1 Downshift 14-16 37-38
087 E-Mode
1-2 Upshift 23-26 37-40
2-3 Upshift 53-65 65-66
3-2 Downshift 35-48 60-62
2-1 Downshift 17-30 32-35
5000S
087
1-2 Upshift 19-27 38-40
2-3 Upshift 45-57 69-70
3-2 Downshift 32-45 65-67
2-1 Downshift 13-16 35-37
087 E-Mode
1-2 Upshift 22-25 40-42
2-3 Upshift 51-63 66-67
3-2 Downshift 34-47 62-63
2-1 Downshift 27-31 42-44
944
087
1-2 Upshift 22-30 45-48
2-3 Upshift 52-65 81-83
3-2 Downshift 37-52 77-80
2-1 Downshift 16-17 42-44
Quantum
087
1-2 Upshift 19-28 40-42
2-3 Upshift 47-60 72-73
3-2 Downshift 34-47 68-70
2-1 Downshift 14-16 37-38
089
1-2 Upshift 20-28 34-37
2-3 Upshift 48-61 66-67
3-2 Downshift 35-48 62-64
2-1 Downshift 14-16 37-38
089 E-Mode
1-2 Upshift 23-26 37-40
2-3 Upshift 53-65 65-66
3-2 Downshift 35-48 60-62
2-1 Downshift 17-30 32-35
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