Hi Guys,
long time lurker, first time poster
.
I have a 2000 T4 Syncro 2.5 Petrol LWB.
When I start her up, rev's go to 1200, sit there for 2-3 minutes then drop to an idle of 8-8.5.

This happens regardless of the temprature.
I have had it in multiple times with the most recomended VW blokes in Canberra, even left it with them for over a week, they replaced the throttle body, relay 30, fiddled with the temp semnsors and nothing has fixed it.
When driving, the revs take about 2-3 seconds to drop when changing gears or going into nuetral.
Im assuming its a cold start issue, mechanic told me theres nothing wrong with the cold start sensors.
ANY help would be greatly appreaciated, the Mechanics have basically thrown their hands up, they are VW speacilists but this one has them stumped and I want to avoid going to the dealership's here in Canberra as they have an appaling rep.
long time lurker, first time poster

I have a 2000 T4 Syncro 2.5 Petrol LWB.
When I start her up, rev's go to 1200, sit there for 2-3 minutes then drop to an idle of 8-8.5.

This happens regardless of the temprature.
I have had it in multiple times with the most recomended VW blokes in Canberra, even left it with them for over a week, they replaced the throttle body, relay 30, fiddled with the temp semnsors and nothing has fixed it.
When driving, the revs take about 2-3 seconds to drop when changing gears or going into nuetral.
Im assuming its a cold start issue, mechanic told me theres nothing wrong with the cold start sensors.
ANY help would be greatly appreaciated, the Mechanics have basically thrown their hands up, they are VW speacilists but this one has them stumped and I want to avoid going to the dealership's here in Canberra as they have an appaling rep.