Re: [MBZ] '87 300TD rev counter.
Curly, The plug on the top of the IP is the rack position sensor, nothing to do with idle. It has a locking ring that needs to be turned to allow removal. There is a small two pin connector at the back of the IP, between IP and cruise control actuator, which is for idle. Pinch to release. -- Max Dillon Charleston SC '87 300TD '95 E300 On July 13, 2015 12:00:18 AM EDT, Curly McLain via Mercedes wrote: >(I think EDC is the book term for the >electronic idle speed control plug on the top of the IP.) ___ http://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
Re: [MBZ] '87 300TD rev counter.
No, that one is for diagnostics, specifically setting the injection timing with the dynamic tool. The one for the idle speed/tach is on the rear of the engine reading off the flywheel. Peter Interesting. Thanks again. We have a 87 124 300D that has a completely wacko idle. Everything I've tried makes no difference. I think the tach also goes wacky with the idle. But when I unhook the idle speed electric connector on the pump it does the same wacky idle thing.I never thought of looking at the tach/instrument cluster as Dan suggests. Is there some other connection between the hall effect sensor/tachometer to the throttle or idle speed control that would work with the EDC unhooked? (I think EDC is the book term for the electronic idle speed control plug on the top of the IP.) It sounds like a flakey signal from the sensor would cause this, but I don't understand how it could work with the plug on top of the IP disconnected. Next time I see the car (probably 6 months) I will look for this sender and connector at the rear. ___ http://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
