Date: Mon, 20 Mar 2017 10:45:54 -0700
Reply-To: Stuart MacMillan <stuartmacm@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Stuart MacMillan <stuartmacm@GMAIL.COM>
Subject: Re: Question about Transmission Stutter
In-Reply-To: <CAKLYf1116bOy7tyG8WMhcru8=4K7APoxgWV8ju7aCOH6qp_18Q@mail.gmail.com>
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Did you clean the throttle body and adjust the two micro switches? See Bentley 24.33, note last paragraph on that page. With the Digijet system if the first switch isn't adjusted properly you will get bucking under certain conditions. Accelerating or, in my case, severe bucking at speed around 35 mph. Worth checking before you get too deep in the weeds.
My van was misadjusted by the factory (factory paint seal on screw was unbroken) and several VW techs missed the problem back in '84-'85. Poor PO put up with it for 30k miles until VW did a warranty buy-back. I bought it from a Seattle VW dealer and they couldn't fix it either. 15 min with my Bentley and a screwdriver and it was fixed. I drove that van for 20 years/250k miles and wish I'd never sold it.
Stuart
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Ryan Perry
Sent: Monday, March 20, 2017 7:33 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Question about Transmission Stutter
Hey everybody, I have put this question out there before but under different circumstances so wanted to see if the group had feedback after some more info.
So, my van at a lower RPM and then constant speed to off throttle starts to do this bucking thing. Hard to explain, its almost a resonant issue where its hardly any throttle and it almost feels like the transmission is engaging then disengaging but gets worse as I continue over the course of a few minutes until I have to put in clutch.
Initially I chalked it up to a weak engine. My old 1.9 was on its last leg with low compression and oil pressure and just figured it was not keeping up well with the demand at low RPM.
Well, I now have a new GW 2.2 with new AFM, ECU and CVs repacked and booted and new clutch 2-3 years ago. Unfortunately still doing it. One of the problems now is that with the increased torque of the engine its more pronounced.
I have heard that it was perhaps associated with the bushing for the cone of the transmission but can't seem to find much info on it. I am hoping it is not my transmission going bad. After the money I just spent on this new engine pretty sure I would be dealing with it for a while.
Any thoughts on what to check or how to diagnose, info to read or products to help?
thanks
Ryan
Asheville, NC
