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Geo Truck
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1991
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Tracker 4x4 L4-1590cc 1.6L
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Repair and Diagnosis
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Automatic Transmission/Transaxle
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Testing and Inspection
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No 1-2 Upshift In D & L2
No 1-2 Upshift In D & L2
1.
Stuck
governor
valves.
2.
1-2 shift valve stuck in first gear position.
3.
Leaking seal rings in oil pump hub.
4.
Excessive leak in
governor
pressure circuit.
5.
Clogged
governor
screen.