ml 320 2000 will idle but dies when you try to accelerate or put it into gear

2000 MERCEDES BENZ ML320
160,000 MILES
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LANGEBAAN
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the starts first time idles but when you put it into gear it dies al so if you push the eccelerator
Nov 13, 2011 at 4:01 PM
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FIXITMR
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when did this start? get fuel pressure reading.
Nov 13, 2011 at 4:25 PM
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LANGEBAAN
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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
Nov 13, 2011 at 5:46 PM
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FIXITMR
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what about hot or cold engine? does it effect it?
Nov 13, 2011 at 6:06 PM
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LANGEBAAN
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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
Nov 13, 2011 at 6:15 PM
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FIXITMR
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so no somethings wrong with car lights lit on dash?
Nov 14, 2011 at 6:59 AM
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LANGEBAAN
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all lights are normal
thank you
Nov 14, 2011 at 7:04 AM
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FIXITMR
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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.
Nov 14, 2011 at 7:29 AM
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LANGEBAAN
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what about crank case sensor
Nov 14, 2011 at 9:03 AM
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FIXITMR
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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.
Nov 14, 2011 at 9:41 AM
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FIXITMR
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the TPS would be the sensor to suspect with your symptoms.
Nov 14, 2011 at 9:43 AM
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LANGEBAAN
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where would that be located as well as the muf sensor
once again thankyou for your help
Nov 14, 2011 at 5:00 PM
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FIXITMR
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what engine does it have in it?
Nov 15, 2011 at 7:03 AM