Benz experts help me out🙏
My 1985 230e started experiencing issues a few months ago with rough idle, rpms dropping after rev, running rough with ac on, etc. I started by testing the fuel pressure on the top half of the distributor (don't have the proper tool to test pressure on bottom half) and it was getting 80 PSI but slowly dropping after. Replaced the injectors, replaced fuel distributor boot cause it was torn, confirmed there were no vacuum leaks also replaced fuel pump check valve and fuel accumulator.
after doing that work the fuel pressure now holds around 40 psi when the engine is shutoff and maintains the 80 psi while running.
but I am still having the same issues as before and am beginning to think that its something to with the electrical because I just noticed that the eha valve connector was covered in oil so i tried to unplug it only to find that the car runs the same with it plugged in on not. I had also found the same thing with the idle switch on the throttle cable linkage, no matter if its pushed down or not or unplugged it just doesn't do anything.
if anyone with knowledge of this system can help me out it would be greatly appreciated and thank you