Stall speed test. When the engine and transmission are at operating temperature (15 or more minutes of driving around), come to a full stop, pointed in a safe direction. With the transmission in drive, stand firmly on the brake with left foot and floor the accelerator with right foot. Engine speed will climb, level out for a bit, then climb again as the turbocharger spools up (if your ALDA is set correctly). It should probably level out at around 1800 RPM, I forget the spec, it is published but I'll have to dig a bit to find it.
The idea is to determine if your torque converter is working or not. If you only get to say 1200 RPM, your torque converter has problems. Very respectfully, /s/ Max Dillon '87 300TD 334k miles (Off with the head!) '95 E300 292k miles (daily driving duties) '73 Balboa 20 (High & dry until the head is back on) Charleston SC ________________________________ From: andrew strasfogel <astrasfo...@gmail.com> To: Mercedes Discussion List <mercedes@okiebenz.com> Sent: Mon, August 15, 2011 12:42:58 PM Subject: Re: [MBZ] (SPAM?) Re: Unexplained whining noise in my W123 300TD What test? On Mon, Aug 15, 2011 at 9:46 AM, Jim Cathey <j...@windwireless.net> wrote: > that is your 'stall speed'. Should be higher with a 1985 torque converter >> than with an older one IIRC. >> > > And if notably low it's a TC problem. (Or, as in my particular > case, the splines on the nose of the transmission were sheared off.) > The test is so easy that you should just do it. Takes seconds > the next time you drive. > > -- Jim > > > > ______________________________**_________ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives >http://www.okiebenz.com/**archive/<http://www.okiebenz.com/archive/> > > To Unsubscribe or change delivery options go to: >http://mail.okiebenz.com/**mailman/listinfo/mercedes_**okiebenz.com<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 _______________________________________ 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
