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I have a 4sp ZF, the car has suddenly become very “sluggish” pulling away, but once the engine gets up to 2,000 RPM ish the car pulls okay. Why?

April 26, 2017away car engine pulling sluggish suddenly ZF

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I have a 4sp ZF, the car has suddenly become very “sluggish” pulling away, but once the engine gets up to 2,000 RPM ish the car pulls okay. Why?

1 Answer

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Posted

It sounds like the torque converter sprag clutch is slipping. Two common symptoms are 1) as you describe sluggish pulling away; sprag clutch is slipping which effectively means no torque multiplication; and 2) the sprag clutch has seized. In this case the car pulls away fine but at 2,000-RPM ish it feels like the brakes are jammed on. Solution replace the Torque Converter.