Concur. This was the exact cause when my 82 300SD exhibited same symptoms. In my case the leak was in the little rubber hoses that connect the electrical vent valve (forgot the real name) to the hard lines. This is the valve on the firewall that vents the boost pressure to the ALDA when the transmission is shifting.
Scott -----Original Message----- From: mercedes-boun...@okiebenz.com [mailto:mercedes-boun...@okiebenz.com] On Behalf Of Jim Cathey Sent: Friday, July 15, 2011 12:55 AM To: Mercedes Discussion List Subject: Re: [MBZ] Vacuum Pressure Converter for AT - what's it good for? > too ashamed to admit my ignorance [Hop up mill] and plead for an > explanation, Probably fixed pressure leaks on the line from the intake manifold to the injection pump, which prevented the IP from thinking there was any turbo boost so it didn't fuel as much as it needed to/could have. -- Jim _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com