vw sharan auto gearbox

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Mon 23 Feb 2004 12:38
vw sharan auto gearbox - rev gary
I have a VW Sharan 2.0CL Auto, P reg. It had an worsening fault that meant that it did not always change gear when it should. From a standing start it should change into second somewhere around 2000-2500 revs but I sometimes saw nearly 5000. The fault could show itself in any gear. I ignored it for too long and the gearbox died on the motorway just before Christmas. A recon box (a replacement or the original redone I do not know) was fitted but the gear changing problem was still apparent. The gearbox specialist kept the car for a further week to track down the problem. They tell me they employed an auto electrical specialist who eventually diagnosed a dodgy throttle potentiometer. They said they cleaned the contacts and told me to see how it went. For a couple of months it has behaved itself almost perfectly but over the last couple of weeks it has held onto a couple of gears. Not wanting to burn another gearbox I need to find the root of the problem. VW want £300 for a potentiometer so I was not going to fit one on the offchance. Speaking to my regular service engineer he swears blind there can be no contact between a dodgy throttle potentiometer and an automatic gearbox fault. Can anyone help?

God bless

Rev Gary Cadge
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