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Your statement is a little inconclusive. Will the transmission shift when the engine is turned off, but not shift when the engine is running? If it is jammed and refusing to move even with the engine off, the problem will be inside the gearbox and usually related to the selector forks and or rods. If the the problem is there only when the engine is running the problem will be related to the clutch assembly, which is failing to disengage the gearbox from the engine

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โˆ™ 2011-12-25 17:13:21
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Q: Why won't Isuzu truck manual transmission not shift at all?
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