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On 24 Jun 2005 at 7:28, Timothy Kender. wrote: > On Jun 23, 2005, at 7:38 AM, Jim Adney wrote: > > > You sent a very well thought-out message with lots of good info, > > but my guess is that the secret is in your first paragraph. > > > > Where is the VM hose connected on this engine? I'm guessing that > > someone connected it to some sort of vacuum port on the carb, just > > because this was all they had, and this is giving the VM a > > completely wrong signal. The VM needs straight manifold vacuum, > > which means that it needs to be connected to a port somewhere down > > on the actual manifold. > > Thankfully, the VM is attached to the manifold. All plumbing lines > look intact, have appropriate measurements of vacuum, etc. I can't remember replying to this yet, so: Everything you wrote seems to point to a shifting problem most likely related to the VM. While there may well be a problem that someone more familiar with the AT might spot, here's what I would look at first. I would try to verify that the mechanic actually hooked a pressure gauge up to the AT and measured the ATF pressure as outlined in the Bentley manual. I would check to make sure that the hose between the manifold and the VM is clear. I've seen hoses with ball bearings stuck in them to make them look like they were connected but they were blocked. If you pull this hose off the VM while the engine is running, it should make the engine run a lot worse, and may even stall the engine. It's possible that you need a different VM, you might just have the wrong one on there. The VW ones adjust with an Allen wrench, but the aftermarket ones adjust with a small screwdriver. Which is yours? If yours is the VW style, can you read the suffix letter of the part # off it? The last possibility that I can think of is that the vacuum signal from this single carb engine is just completely wrong for thie VM. Note that VW supplied a different VM to AT type 3s that came with dual carbs, and they never sold the AT with the single carb type 3 engine, so getting this to work right may be difficult. -- Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~