Hi All. I just picked up a 1989 300E I intend on using as my daily driver. It has been sitting since late 2008 when the previous owner decided he was getting too old to drive. I drained the old gas, etc... I have a few 300E's for parts in my back yard, so I thought I couldn't go wrong since I have all the parts I would ever need at hand. I'm used to working on W107's and W126's, so I am kinda unfamilliar with this issue on the W124.
Anyway, I have a major stalling issue with the car. I have done everything so far. I replaced the fuel filter, replaced the air flow sensor AND the fuel distributor, EHA valve and some related components in the area. I also swapped out the computer with a known good one, and no difference. Both fuel pumps are running fine. I also have good spark. I get about 12.5 volts measured from both sides of the coil.
Now for what happened before I got the car: someone got underneath it and stole the catalytic converter. But they cut it off after the Y , just before the resonator. The 02 sensor is still there.
I replaced the exhaust and just put a straight pipe in place of the cat. Could this have something to do with it?
The car will idle 100% smooth, and when pressing the accelerator in either park or N it will rev smoothly without wanting to stall. When in drive it seems to want to stall when I come to a stop, go around a corner or am driving on an unlevel surface.
My main question is what is the voltage supposed to read at the EHA valve? I'm getting about 4 volts at idle, and I'm also getting about the same at the idle valve. Does anybody have any schematics or diagrams with what voltage should be read in this area that could be emailed to me?
Any suggestions on what to do next? Anyone having similar problems? I'm pulling my hair out and everything I swap out does not make a difference.
Thanks!