Until 2 days ago it had not had really had any issues. Occasionally it would take 1 or two seconds longer to start but never a big deal. 2 days ago it stumbled while driving (momentarily) then everything was fine. After I shut it off it will not start again. It is getting fuel and spark but just cranks and cranks. Any suggestions? I did replace both fuel pumps and filters about 4 months ago because a technician had suggested them. It is a Euro car, and has bulletproof glass and armor plates. Title says 1986 500SEL. Plate says 126037. I have a feeling it is going to be in the fuel distributor. Any suggestions??? Thank you in advance for all of your help!

 

What is the correct voltage at the idle control solenoid? I ask because mine is vibrating all the time when key is on. Voltage ranges from 0 to about 4 volts. On my 380 SE it reads 12 volts and no vibration????

 

Oh ya, vin is 1260371A216652