BenzWorld Senior Member
Date registered: Jan 2005
Mentioned: 0 Post(s)
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RE: Infrequent Idle Problem
How far do you drive your car?.You should ALWAYS run the engine until the temp is reading at least a third up the scale and a minimum of 20 minutes.The water should only be condensation from when you shut down previously,Cold moist air condensees in the exhaust,when you start up it is blown out the back.
A typical mercedes problem is the (short running caused) deterioration of the rear the rear muffler.
If you are only running a short distance to work,the rear muffler fills with condensate and eventually rusts through the bottom.that takes about 6 months.
I often hear of people complaining about poor quality Merc mufflers when it it is the fualt of the driver,not allowing enough time to warm up.
When repacement time comes,buy a stainless system from timevalve.
The tacho sounds like a bad earth connection from the body to the engine,Down by the stater is a heavy braided earth strap that is connected to the body.ensure that it is tight.
Also there is a terminal block,where the cables run from the starter,It has several cables on it,a larger one from the starter and several that power the car.Ensure that it is tight,no loose or dirty connections.
Finally,Make absolutely sure that the coolant is Genuine Mercedes coolant NOT cheap supermarket green water.It is vital that the correct fluid is used to prevent coorosion in the water jackets.[:)][:)]