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Go Back   Ultimate-BMW.com :: BMW forums, BMW parts, BMW accessories, BMW performance parts > BMW Makes and Models > BMW M5 and all 5 Series (E12, E28, E34, E39, E60)


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Old 10-16-2014, 13:12   #1
pistonbroke
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Default Auto box problem

Can anyone help with an issue with my 540i auto? The torque convertor was overhauled and it now operates fine but the box "hunts " between "lockup" and top gear at light throttle.
At around 2000rpm it can't decide if it wants to be in lockup or not. Perfect in operation otherwise.
I'm told the issue is that the throttle position sensor is not in sync with the recon torque convertor and I need to adjust the position of the TPS to compensate.
Any comments? If such adjustment is appropriate, which way and how much?
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