Mechanics

ML 320 WILL IDLE BUT DIES WHEN YOU TRY TO ACCELERATE OR PUT IT INTO GEAR

2000 Mercedes Benz ML320 • 160,000 miles

The starts first time idles but when you put it into gear it dies al so if you push the eccelerator
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Langebaan
November 13, 2011.




When did this start? Get fuel pressure reading.

Tiny
Fixitmr
Nov 13, 2011.
It has been going on for awhile but if you feather the accelarator for awhile it will go away the car is at home and I am at work 1000 km away will be home on Thursday
thank you for your quick reply

Tiny
Langebaan
Nov 13, 2011.
What about hot or cold engine? Does it effect it?
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Tiny
Fixitmr
Nov 13, 2011.
The wife went to the supermarket yesterday about 7 km so it would be hot after disconnecting the live lead from the battery and reconnecting it she managed to start the car and get home safely this morning when she wanted to start the car for church
the same thing happend disconnecting the battery lead did not help her this morning hope this is of some help
thank you

Tiny
Langebaan
Nov 13, 2011.
So no somethings wrong with car lights lit on dash?

Tiny
Fixitmr
Nov 14, 2011.
All lights are normal
thank you

Tiny
Langebaan
Nov 14, 2011.
Also check MAF sensor to see if it's dirty. It has major effect on air/fuel ratio. I say air/fuel mix too lean is your problem but why is what we need to determine. OX sensors also possiblity? Or some air leak after throttle plate.

Tiny
Fixitmr
Nov 14, 2011.
What about crank case sensor

Tiny
Langebaan
Nov 14, 2011.
Crank sensor only decides spark or not. Why would stepping on pedal change what crank sensor is doing? Crank sensor has no input from other sensors. Now if this problem were random and unrelated to other actions by operator then it could be considered.

Tiny
Fixitmr
Nov 14, 2011.
The TPS would be the sensor to suspect with your symptoms.

Tiny
Fixitmr
Nov 14, 2011.

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