1998 MERCEDES BENZ E430 Engine Problems

STALLING, ABRUPT ENGINE FAILURE, FAIL TO OR DELAYED START: FREQUENCY - 6 TIMES PER YEAR, NO WARNING. 1/YR - FAIL TO START AND DELAYED STARTING FOR SEVERAL MINUTES; 5/YR ENGINE STOPPED/ STALLED WHILE OPERATING AT SPEEDS FROM 35 TO 65 MPH. 1. DURING THE DELAYED STARTED THERE WAS NO ENGINE NOISE, I.E. NO GENERATOR/TURNOVER OCCURRED, EVEN DASH LIGHTS FAILED TO LIGHT; THEN STARTED - NO ERROR MESSAGE NOR CHECK ENGINE APPEARED. 2. DURING THE STALLS AT SPEED IN GEAR, THE ENGINE DIED WITH NO WARNING AND EVENTUALLY STARTED AGAIN WITH REPEATED KEY-TURNS. MULTIPLE INCIDENTS OF ENGINE FAILURE SINCE 2008. WITHOUT WARNING OR ANY SIGN OF A PROBLEM, THE ENGINE COMPLETELY SHUTS OFF. THIS OCCURS: WHILE STARTING - NO RESPONSE , WHILE STOPPED, DRIVING AT SURFACE STREET AND HIGHWAY SPEEDS, TURNING AT LOW SPEEDS AND EVEN BACKING UP. HAVE REPLACED/REPAIRED OR INSPECTED PLUGS&WIRES, WIRING HARNESS, K40 RELAY, FUSES, BATTERY, MASS AIR...

4.11.15//1233HRS (MT) -- 1998 MERCEDES BENZ E430 STALLING, ENGINE FAILURE PROBLEM: MULTIPLE INCIDENTS (MORE THAN 15 IN 7 YEARS) OF ENGINE FAILURE SINCE 2008. WITHOUT WARNING OR ANY SIGN OF A PROBLEM, THE ENGINE COMPLETELY SHUTS OFF. THIS OCCURS: WHILE STARTING - NO RESPONSE , WHILE STOPPED, DRIVING AT SURFACE STREET AND HIGHWAY SPEEDS, TURNING AT LOW SPEEDS AND EVEN BACKING UP. HAVE REPLACED/REPAIRED OR INSPECTED PLUGS&WIRES, WIRING HARNESS, K40 RELAY, FUSES, BATTERY, MASS AIR FLOW SENSOR, CRANKSHAFT POSITION SENSOR, EGR VALVE, FUEL FILTER, ECU CHIP, FUEL PUMP/RELAY/LINES, VACUUM LINES, AIR FILTER, TENSIONER, HARMONIC BALANCER, VIBRATION DAMPER, IGNITION CONTROL UNIT, SOLENOID, TEST OF COIL PRIMARY AND SECONDARY RESISTANCE...NONE OF THE REPAIRS CORRECTED THE STALLING PROBLEM. CURRENT MILEAGE = 135,000. PLAN TO INSPECT/REPLACE O2 SENSORS, IGNITION SWITCH, IDLE AIR SLIDE, HARMONIC DAMPER ... AND THE SEARCH CONTINUES...THIS IS AN ACCIDENT WAITING TO HAPPEN (AND ACCORDING TO SEVERAL POSTS ON THIS SITE,...