Help! Car died
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Joined: Jun 2020
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1991 300SE w140
Help! Car died
Hello!
So was cruising this night and BAM! engine surged and RPM slowly went down, when it completely died. Tried to start - cranks, no start. Fuel pump buzz is present (replaced one of two pumps with PIEBURG unit 2 weeks ago). After 5 mins of sitting starts fine and goes. After driving 500 meters dies again... left the car in forest and drove home, was really angry. Where should I look? Throttle body, throttle cable? Fuel injection problems?
I must note, that when this all started, it smelled pretty heavy of unburned gas. Maybe such a little thing as spark plugs?
And about wiring which is dodgy on these cars - it has been changed (mechanic said so). And no codes were present at diagnostic 2 weeks ago...
Thanks in advance.
M104.990 engine 1991 w140
722.368 trans
So was cruising this night and BAM! engine surged and RPM slowly went down, when it completely died. Tried to start - cranks, no start. Fuel pump buzz is present (replaced one of two pumps with PIEBURG unit 2 weeks ago). After 5 mins of sitting starts fine and goes. After driving 500 meters dies again... left the car in forest and drove home, was really angry. Where should I look? Throttle body, throttle cable? Fuel injection problems?
I must note, that when this all started, it smelled pretty heavy of unburned gas. Maybe such a little thing as spark plugs?
And about wiring which is dodgy on these cars - it has been changed (mechanic said so). And no codes were present at diagnostic 2 weeks ago...
Thanks in advance.
M104.990 engine 1991 w140
722.368 trans
Out Of Control!!
Joined: Sep 2018
Posts: 14,711
Likes: 4,603
From: unbegrenzt
2017 GLE350 4MATIC
Fuel, spark and air. What diagnostic work have you done?
Battery
Coil/ignition pack
Spark plug wires
Spark plug
Fuel pump
Fuel in the tank
Fuel injectors
Cam and crank sensors
Throttle plate and sensor
AIr flow sensor
Air filter
Battery
Coil/ignition pack
Spark plug wires
Spark plug
Fuel pump
Fuel in the tank
Fuel injectors
Cam and crank sensors
Throttle plate and sensor
AIr flow sensor
Air filter
