Why does my engine not shut off when the key is turned off?
This leak can be caused by one of the rubber fittings getting loose or accidently knocked off, or it can be caused by a leak somewhere else in your vacuum system (the most common on the 123 chassis is leaks in your door lock system). If your door locks stopped working at the same time the engine shut-off failed you will know the two are related.
What happens when you remove the key from the ignition?
Car Engine Doesn’t Turn Off When Removing Key or Pressing STOP It is a strange problem to have a car that won’t turn off when you remove the key from the ignition or press the Engine Stop button. Your engine will continue to run even when you remove the key from the ignition because the fuel pump is not shutting off.
Where does the vacuum go on a Mercedes 300D?
In all Mercedes diesel engines from the first 300D in 1975 up to the mid 1990’s, vacuum (suction) is used to turn the engine off – not electricity! In simple terms – there is a valve mounted on the rear or side of the diesel fuel injection pump. This valve has an arm attached to it that goes down inside the pump.
Why does my car keep running after I remove the key?
Here are the most common problems that cause the engine to keep running even after removing the key from the ignition or press the STOP button. The ignition module may fail, or if your car is equipped with an Engine Push to the Start button, the Keyless module could be the culprit.
Why does my diesel engine keep running after I Turn Off the key?
When you turn the key off on your Mercedes diesel, you may have noticed that the engine will not quit immediately. In some cases it may even keep running a second or two after you have turned the key to the off position before it finally quits. That alone should give you a clue that a diesel engine uses a different approach to shutting down.
In all Mercedes diesel engines from the first 300D in 1975 up to the mid 1990’s, vacuum (suction) is used to turn the engine off – not electricity! In simple terms – there is a valve mounted on the rear or side of the diesel fuel injection pump. This valve has an arm attached to it that goes down inside the pump.
Car Engine Doesn’t Turn Off When Removing Key or Pressing STOP It is a strange problem to have a car that won’t turn off when you remove the key from the ignition or press the Engine Stop button. Your engine will continue to run even when you remove the key from the ignition because the fuel pump is not shutting off.
What happens when you turn off the engine on a Mercedes?
When you turn the key off on your Mercedes diesel, you may have noticed that the engine will not quit immediately. In some cases it may even keep running a second or two after you have turned the key to the off position before it finally quits.
How does a Mercedes diesel engine shut off?
Proper diagnosis is a must! On older Mercedes diesel engines models: 1975 to 1976 115 chassis 300D, all 123, 126, 201 and 124 chassis diesels from 1977 to 1993 the engine shutoff is controlled by vacuum (not electrical). An engine driven pump supplies vacuum to the system and a vacuum operated shutoff valve shuts fuel off inside the injection pump.
Why does my vacuum not shut off when the key is turned off?
And the number one reason for sudden loss of vacuum is a leak somewhere in the lines. This leak can be caused by one of the rubber fittings getting loose or accidently knocked off, or it can be caused by a leak somewhere else in your vacuum system (the most common on the 123 chassis is leaks in your door lock system).
This leak can be caused by one of the rubber fittings getting loose or accidently knocked off, or it can be caused by a leak somewhere else in your vacuum system (the most common on the 123 chassis is leaks in your door lock system). If your door locks stopped working at the same time the engine shut-off failed you will know the two are related.
Proper diagnosis is a must! On older Mercedes diesel engines models: 1975 to 1976 115 chassis 300D, all 123, 126, 201 and 124 chassis diesels from 1977 to 1993 the engine shutoff is controlled by vacuum (not electrical). An engine driven pump supplies vacuum to the system and a vacuum operated shutoff valve shuts fuel off inside the injection pump.
And the number one reason for sudden loss of vacuum is a leak somewhere in the lines. This leak can be caused by one of the rubber fittings getting loose or accidently knocked off, or it can be caused by a leak somewhere else in your vacuum system (the most common on the 123 chassis is leaks in your door lock system).
Why does my diesel engine not shut off?
Since a diesel engine does not run on electric spark, the engine has to be shut off by some other means. When you turn the key off on your Mercedes diesel, you may have noticed that the engine will not quit immediately. In some cases it may even keep running a second or two after you have turned the key to the off position before it finally quits.