On 6 Jul 2006 14:18:17 -0700, "delboy"
wrote:
>Hi, i have a v w caravelle 2.5 derv. i have experienced trouble with
>the auto transmission it seems to lock up in 3rd gear and will not drop
>back into 4th. i have had the gearbox taken out and completly
>recondictioned and found that the problem is still there, after many
>searches on the web and talking to many other gearbox garages, we have
>changed the oil in the gearbox, and fitted a very large oil cooler to
>the gearbox and found that the problem has gone, phew. it has nearly
>driven me to dispair, the vw has only done 80k it has been serviced
>every 10,000 miles by a vw garage, the year of the vw caravelle is
>2002, i have only been the driver of the vw and consider myself to be a
>very carefull driver, i would be very interested to find out if any
>other person has had this problem or something like it. DELBOY
> .
>
If the trans uses a temp sensor, this may be stopping the upward
shift. With a hot (overheated) trans or bad sensor, the temp sensor
stops the trans shift until it cools down. The oil cooler may have
solved that.
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