Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Mercedes-Benz M-class (ML320, ML350, ML500 and ML55) 2005 and earlier



  • drew_drew_ Posts: 3,382
    They probably use something similar (perhaps stronger?), but because of the fact that they have no control over what you may buy and put in, that's probably why they don't want you to add any additives yourself.

    Vans, SUVs, and Aftermarket & Accessories message boards
  • globus1globus1 Posts: 1
    My brand new 01 ML320 has only 500 miles and I also noticed same problem neicey59 describes. It happened two or three times. Just yesterday, after stopping at red light I pushed the gas pedal, and guess what, instead of zooming forward the truck went into thinking mode for a moment and then changed its mind and began the motion. Luckily there were no drivers behind to confuse when my break lights went off. I also noticed slight shaking of the car preceedding that moment. Do these episodes warrant a trip to the MB service department? Could it be fuel from a particular vendor? I only filled the tank once with 93 octane fuel. As neicey59 I also appreciate any insight.

  • kenyeekenyee Posts: 738
    Sorry ctic :-)
    cdic asked if XPCs were available in 17" for his ML430...
  • biker5biker5 Posts: 199
    It could be the gas, yeah you put a 93 octane gas, But it depends if you got it from a good gas station IMO try to get your gas from diffirent gas station and if the problem is still there, its time to visit your dealer. quite a few on people on this board replaced their gas pedal,linkage and actuator for the similar problem. I cross my finger I don't have a problem similar to that on MY2000 ML320.
  • jn320jn320 Posts: 5
    I have had problems with my 320 hesitating within the first mile in the morning . At a stop sign, the engine acts like it is running on four cylinders and the tach needle jumps around. I put it in neutral and the revs go to about 800 then it surges to 1200 then goes back down to around 800 and runs fine. The dealer told us to use mid grade gas. That didn't help. They are now going to replace the engine control module and see if that helps.
  • rover96rover96 Posts: 33
    I dont know about the French, it may be something to do with a stick shift engine & clutch..., so all this combination may cause some different....
    Back to the point, simple, when u shift it out of netural, do u get a higer RPM? higher rpm means more air & fuel mixture, that in turn will drive the specific fuel comsumption up (fuel burn).

    there are some few tricks I learn when I get my aircraft A&P license, It is helpful,
    battery installation +ve first, removal +ve last.

    oil filter(can type, not applicable to ML320 or canister type) - put some oil inside filter housing before screw it in the block.
  • mihalikc1mihalikc1 Posts: 2
    I have a one week old 2001 ML320 with 350 miles. Enjoy the vehicle, but had it hesitate as I took off from a red light a few times on the original tank of gas from the dealer. Filled it up for the first time with 93 octane and it seemed to run well, but was mostly highway driving. Just filled it up today with mid grade 89 from a major gas company, and once again it seemed to hesitate, especially if the a/I is running. I had spoken to the dealer and they had set up a service visit, but I stupidly cancelled it yesterday when it seemed to be running well.
    Any ideas? Is this a frequently occurring problem for others?
  • noelbongnoelbong Posts: 41
    I did notice my ML hesitated too, but for only one or two times lately, also at the light. The gas pedal felt kind of rough and when I pressed it further down it shot off (throwing me back into the back of the seat) after hesitating for a second or two. Didn't think too much of it though. I was thinking it could be the extremely hot weather we are experiencing in the Chicagland lately?
  • chaddschadds Posts: 11
    Click and Clack the Tappet brothers said in the Washington Post that it puts greater wear on your transmission to shift to neutral at a light than to leave it in Drive. You could go to the next extreme and if the light is long enough turn off your car. While I'm here let me say that the populace of North America who complained and wouldn't wait out the learning curve on the '98/'99 rear seat folding mechanism have caused us all to lose that middle seat that was an actual seat with long distance comfort. That was a run on sentence. We also lost the three independently folding seat backs. I'll miss these features when I trade.
  • rover96rover96 Posts: 33
    While you on this subject, I would like to point out the window switch on 98 model, With the way it design, anyone can open or close the windows without even lifting your finger. Its a single point operation switch. I kind of like it. Too bad they change it afterward.
  • drew_drew_ Posts: 3,382
    Yes, I know about Click and Clack's advise. What they said is that whenever you shift into neutral from drive (and vice versa), the drivetrain is subjected a slight shock. They theorise that this is probably not good over the long run. However, since I don't do this at every traffic light. only at the longer ones, I'm not worried at all. I just set it into neutral and then apply the parking brake. My foot and leg gets a rest, and the vehicle doesn't have to be held back. Of course, I don't do this if it's on a slope.
  • drew_drew_ Posts: 3,382
    Good point, I didn't think about the idling for some reason. However, since the idle only goes up by about 200 rpms in neutral vs drive (while stopped), it's so miniscule that I don't really care. My fuel economy gains from that can easily be wiped out if I just drive a bit faster up the mountain where I live ;-).
  • akwasiakwasi Posts: 8
    Drew, I own MY01 ML320 with 7800 miles on it. I am also experiencing the engine hesitation ever since I took a long trip from Justin, Texas to Columbia,Missouri. I bought gas from different gas stations during the trip but mostly 91 Octane or higher. Ever since I came back to Justin, I have switched back to the gas station I used all the time with a 93 octane rating but the ML still hesitates at stop light. The PM also shoots up and the engine makes a "moo" sound like a cow even though I try to take of slowly when the green light(traffic light)comes on. I took it to the dealership and they told me they could not duplicate the problem but I experience it everyday. Do you have any idea what is going on, Drew?
  • kenyeekenyee Posts: 738
    I did that for 10 years in my Integra because it vibrated enough at stoplights to annoy me (the ML doesn't). In the last year before I got rid of it, it had trouble getting into Overdrive when it was really cold out. Not that it means much though, because I had 152K on the odo....
  • dbonodbono Posts: 8
    We haven't experienced the hesitation being described so frequently here by folks with new MLs -- at least not yet! But it does make me wonder: the dealer said there was no break-in period for our new 01 ML 320, and also that we shouldn't bother with any oil change before the FSS indicates. Any thoughts? I would have expected both break-in and early oil change to be recommended, but at my dealer, it is being advised against.

    BTW, the 2002s must be close. We ended up paying $2k under factory invoice.
  • biker5biker5 Posts: 199
    Just make me wonder... Why, suddenly the hesitaion on stop light only came out mostly on MY2001 I haven't heard this problem on MY2000 and older. What you guys think a glitz on computer on all 2001 model. Just for my observation.
  • bfengbfeng Posts: 6
    First question, is there a search feature in townhall that
    does a find on keywords over old posts in this forum?

    2nd: Is there a consensus on best oil to use (Mobil 1 and what weight?)

    3rd: Anything particular to watch out for when changing the oil filter?

    4: Anyone unhappy with the "Topsider" oil changer?

    5: Anyone replace their dust filter themselves? Since I've not seen a good
    aftermarket service manual for the ML, any advice would be appreciated.

    John Feng
  • jn320jn320 Posts: 5
    Biker 5, I have a MY2000. As stated in my message #3929, my 320 hesitates within the first few minutes of starting after sitting overnight. After that it runs fine. It started doing this when the weather turned warm and humid. It sounds like other people that have posted have the hesitation problem at any time.
  • biker5biker5 Posts: 199
    Yeah, I went back and read your experience now I understand your complanint. Keep us posted whats up to your engine when the dealer replaced your engine module.
    I hope mine stay fine.
  • cdiccdic Posts: 36
    CDIC => '01 Sport model 430 (for the record). I am hoping that Michlin will have a model for me by the time I need them. They make a great tire.


    I opted for the Tempo Oil Extractor instead of the Topsider. The Topsider looks to me like a gas can with a vacuum pump tacked on it. The Tempo unit is designed like a garden pump sprayer. I know they both work just fine, well worth the money. The Tempo unit has a disadvantage that the bottle will not remove the contents of the ML crankcase in one effort. It takes 2, the thing just doesn't hold that much oil (5 liters), but the extraction hose is easily removed where you pour out the contents. You will need another can to transfer the oil to before heading to the recycling center. You can see it here:


    This is a messy job, much more so than the oil extraction itself (unless you mistakenly remove the oil pan drain plug - now that is messy). Getting the o-rings off is a little difficult. I suppose you could cut the old o-rings off without getting oil all over your hands. Just have some paper towel hand before you start.

Sign In or Register to comment.