Ive got an ongoing problem with a W126 500SEC with throttle response..
It starts up fine and idles great... you can rev it up without a load no trouble...
however when you floor the throttle under normal driving it stumbles and almost dies out...you have to feather the throttle to keep it going...If I pull it back through the gears it will rev out like normal...
also there is a crackle in the radio when I drive over bumps ...Is this an electicial connection not quite together ..if so where do I start to look...
Alan

What you describe sounds like high voltage leakage. Works OK until you put a load on the engine. Suspect areas-> distributor cap, rotor, plug wires, and lastly HT lead and coil.

------------------
Jeff L
1987 300e
1989 300e
1987 BMW 325

Or low fuel pressure.

------------------
Benzmac:
1981 280GE SWB
1987 16V
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM