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HOMESERVICE MANUALSCHEVROLET1988CAVALIER RS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISTRANSMISSIONAUTOMATIC TRANSOVERHAUL & TESTING - 125C/3T40TESTINGLINE PRESSURE TEST RESULTSLINE PRESSURE TOO HIGH
1988 Chevrolet Cavalier RS, 4D Sedan, Standard

Line Pressure Too High

1988 Chevrolet Cavalier RS, 4D Sedan, StandardSECTION Line Pressure Too High
  1. With pressure high in "N" and "D" positions, and normal to high in "2" and "R" positions, check for broken, sticking or misadjusted Throttle Valve (T.V.) cable.
  2. Inspect T.V. linkage for binding or incorrect cable. Check throttle valve or shift T.V. valve for sticking. Inspect T.V. lifter for bend or damage. Check if lifter length is too short.
  3. Inspect components of control valve and pump assembly for sticking or damaged T.V. valve and plunger, shift T.V. valve, pressure regulator valve, T.V. boost valve and/or pump slide.
  4. Check for worn or missing pressure regulator valve retaining pin. If line pressure is too high in "1" position only, check low blow-off valve for sticking. Inspect internal pump case or case cover for leaks. See Figure .
RENDER: 1.0x

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