Greetings
No. 1
I have a question bout ignition module vacuum. If I apply vacuum to it with vacuum pump it doesnt change anything. I remember my old 420sel if you disconnect vacuum from module and seal both ends RPMs will go lower. With 300E if you disconnect and seal ends it does nothing. Is it suppose to be like it or my module is gone?
No. 2
Im fixing my vacuum leaks and found EGR valve membrane is leaking. I disconnected EGR solenoid and car seems to run a bit better since it doesnt leak vacuum on take off. Can somebody advise if its safe to drive without EGR valve working?

Original problem was hesitation to pick up speed,car accelerates very slow,give it 1/2 throttle it barely moves then jumps ahead like rocket, RPM drop down to 375 when put in D or R it even stalled couple of times, then RPM go up to 525 and stay there.
With vacuum leak found and mixture adjusted car seems to be better on acceleration.
Thank you
Victor

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1999 ML430 Silver 135k ml
Smoked LED taillights, Alpine in-dash DVD player, 12" sub, Pioneer components, 2 amps, 4200k HIDs, ML55 headlights, 20" rims, mirror LED blinkers

SOLD. 1996 E320 145k ml. Burgundy

SOLD but miss it everyday 1992 500sel Black
Chime buzzer mod,Alpine CD/MP3 player with stock amp,Euro headlights,S600 grill,20" rims, BEST CAR EVER!

SOLD. 1990 300E White
187k ml,smoked tails,Euro headlights,17rims,Intake,12" sub in first aid kit,alarm/autostart,buzzer mod