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Turnerdv10
Date registered: Dec 1899
Location:
Vehicle(s):
| ml320 hestitating
I seem to be getting more and more problems with mine hmmm.
I have replaced the plugs and lambda sensors and after approx fifty miles its started to hesitate, bascially when y put your foot down it doesnt go anywhere then gradually picks up then okay for a little while then back to normal any more ideas? |
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cmitch
Expert
Date registered: Apr 2006
Location: Ala-Tenn
Vehicle(s): 2002 ML320, 2005 S430 4Matic, 2010 F150 Super Crew
Posts: 3412
| RE: ml320 hestitating
I have some hesitation in my ML320 but not as bad as what you describe. If anyone else knows what it is, tell us. I'm reading no codes from OBD.
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tclynes
Date registered: Dec 1899
Location:
Vehicle(s):
| Re: ml320 hestitating
this may sound crazy, but where abouts do you live. dirty fuel can have this effect.
Tom |
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Turnerdv10
Date registered: Dec 1899
Location:
Vehicle(s):
| Re: ml320 hestitating
East sussex, When i changed the lambda sensor the ends were all white wether this means anything |
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tclynes
Date registered: Dec 1899
Location:
Vehicle(s):
| Re: ml320 hestitating
where do you purchase your fuel from?
even with there trouble lately, supermarket fuel in my experience can have a bad effect on engines, its to do with the extras they dont have in the fuel.
if your using supermarket fuel, try a tank or two of the good premium stuff to see if it clears the engine, and the lambda sensors may need a good clean too.
Tom |
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Turnerdv10
Date registered: Dec 1899
Location:
Vehicle(s):
| Re: ml320 hestitating
I always fill up at bp. just put some more petrol in it so i will let you know. Just had to replace battery this morning as well hmmm hopefully this isnt one of those cars where something is always going. |
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tclynes
Date registered: Dec 1899
Location:
Vehicle(s):
| Re: ml320 hestitating
maybe the lambda's need a bit of clean then and that could be it. the good fuel might help a bit.
Tom |
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cmitch
Expert
Date registered: Apr 2006
Location: Ala-Tenn
Vehicle(s): 2002 ML320, 2005 S430 4Matic, 2010 F150 Super Crew
Posts: 3412
| RE: ml320 hestitating
I fill up both the ML430 and the ML320 at the same gas station with the same grade-91. The ML430 runs flawlessly and it has 173,000 miles on original wires and plugs. Now, the ML320 came from Houston where there is a lot of dust on everything, so I would say it's possible my fuel filter may be due on the 320.
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Turnerdv10
Date registered: Dec 1899
Location:
Vehicle(s):
| RE: ml320 hestitating
I have just filled up and noticed that the car drivers okay when its hot but when its cold it hesitates? |
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Marcelc
Date registered: Dec 1899
Location:
Vehicle(s):
| RE: ml320 hestitating
Turnerdv10 - 6/24/2007 5:30 PM
I have just filled up and noticed that the car drivers okay when its hot but when its cold it hesitates?
This might be due to the fuel filter/pump not delivering enough fuel.
I would appreciate someone posting info on how to check fuel delivery, thanks in advance.
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diehardg
Veteran
Date registered: May 2006
Location: Tokyo, Japan
Vehicle(s): 2000G500L, 2015 G350BT, 2016G63(now), 1968 S404
Posts: 220
| Re: ml320 hestitating
I had 2000 ML before.
It's very common issue with MLs. Your fuel pump fails when hot and heavy load. This is very hard to detect and leaves nothing on computer. What you experienced is "limp home mode". You'll loose half of the power but your car is still drivable.
To detect this, you need to drive in hot weather and warm up fuel filter. Then, hook up volt meter to fuel pump. Then again, you need to drive very hard, wide open! If suddenly voltage drops, you have a bad pump.
Yasu |
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