Hm... my first reaction was to say the signal comes from the coil, but its actually different and more complicated. See this: http://www.startekinfo.com/StarTek/outside/11883/PROGRAM/Chassis/54-252.pdf
There is a transmission on the transmission, and there are instructions on how to test it. Good luck, Jaime On Tue, May 14, 2013 at 6:19 PM, Max <meadedil...@bellsouth.net> wrote: > Hmmm, doesn't a gasser tachometer get the engine speed signal from the > distributor? > -- > Max Dillon > Charleston, SC > '95 E300, '87 300TD, '73 Balboa 20 > > clay <redgh...@comcast.net> wrote: > > >Froggy is not behaving. But, then again, since when has she? > > > >When I got the car, the tach would swing about wildly in no relation to > >the engine speed. It would then either pet out or not move at all. > >Smack the tach face and it might respond. I knew it was either the amp > >or the gauge, so sourced a fresher gauge. This new one does sort of > >respond, but not really. It will register only between 1k and 2k rpm, > >but does move smoothly between them in relation to engine speed. > > > >I have poked around the interwebs for a clue as to where the sensor/amp > >lives. I am finding much about OM617 cars and diesel, but not anything > >related to a 1974 SL. Does this thing live on the engine or the > >transmission? And where should I be looking for the critter? > > > > > > > >clay > > > > > >1974 450sl - Frosch - Two tone green > >1972 220D - Gump - She was green, simple and ran > >1995 E300D - Gave her life to save me against a Dame in a SUV > >POS 1987 SDL - Beware Nigerian Scammers > > > > > > > > > > > > > > > > > >_______________________________________ > >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 > -- Jaime Kopchinski http://www.jaimekop.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
