Adjusting an EHA. It IS possible!! - PeachParts Mercedes-Benz Forum

mctwin2kman · #27 10-07-2004, 08:31 AM

Quote:

Originally Posted by metamorphik

thanks for the response guys...great finnd nglitz!!

i feel like im getting rammed. $80 per hour and first 5 hours to diagnose my cold start problem! that seems more then excessive. then they told me that i would need to get the EHA. right now im holding off on the install until i can go with a friend of mine to check out what they've done. i don't want to spend close to a $1000 for just a minor adjustment. i will go to the shop tomorrow...but it will cost another $400-500 to change the EHA, they've already charged me several hours for the diagnosis...what do you guys think?

thanks again

Your symptoms are the same I had on my 190E. It was the Water Temp Sensor on mine that fixed the cold start issues. It tells the CIS-E the temp of the engine to fire the cold start valve as well as adjust the mixture via the EHA when the engine is warm. To have it run rich when cold and lean when too hot. This controls the EHA! It is a $40 part and is the two prong connector, the one with two individual plastic poles. Two seperate wires go to it.