Hi,
I had the same power loss (engine protection mode) 4 years ago.
The combinations of fault codes resulted in catalyzers and mufflers
clogged... I changed with racing version (ferritic) custom made,
now the sound is similar to an US V8 Pickup....

Is it pretty common to change the Mass Airflow immediately after having new spark plugs?

The reason why I am asking is because I had new spark plugs added to my 2001 ML 320 reached $100K, and the check engine light came on after 50 miles of driving. I took it to the dealer and there is an issue with the timing of the mass airflow, as it is used to operating on the old spark plugs...

I was just curious to see if this is a common problem? It seems like the Mass Airflow would adjust to the new plugs.

Jety

You did a great job sharing thanks isn't even close to the word for your help. so THANKSSSSSSSSSSSSSSSS!

Ironicly i've replaced, due to it ****ing up. 95% of what you said in that list. I still have the papers to back it up

i too had those problems.
and the horns..(replaced with honda nighthawk horns).

replaced squeeky rear shocks too. I was hoping I would enjoy a better 2nd hundred thousand miles but its been rough running for the last few hundred miles.

Good reading, reminded me I need to replace the antifreeze.

remember to change your Air Filter, otherwise if you bring to the dealer they may think the stinky smell in your car caused by Air Evop

i heard some where that the catalytic converters were under recall for the 1998 ML 320. Is this true?

I had these replaced in 2004 and it was not cheap. If you already paid for something under recall a while ago is there anything I can do about it?

What other recalls are there and is there a time frame?

I know of the power steering hose and clamp, as well as the seat belt thing? ( can someone elaborate) My center lap seat belt is loose and the buckle is broken.

Are there time limits on these two recalls?

Where did you find this custom exhaust? Are a lot available? How pricey does it get?

Dont know if anybody else has experienced this problem but during the winter months my dashboard lights all disappeared. Mercedes were not able to rectify this fault, it only happened when the lights were turned on and everything went out including the mileometer.
I left it and eventually if fixed itself!


Also I have noticed today that one of the headlamp washers are leaking and a driving lamp is full of condensation and the TV in the comand unit does not work properly and all I get is wavey lines...

To answer 2 questions in this post ...since my last post...

1) I had the Cats replaced for free in my 1999 ML320 just a few months ago.
Does it apply to the 98 ? Not sure but call them! !

2) I think the Mass Air Flow sensor does foul plugs. Faulty sensors makes the engine often go in the limp mode and that seems to fould plugs. I went thru 4 sets in 2,000 miles. Each time I replaced them it ran better for a while.
Since replacing the MASS and a vacuum line my stock plugs are working okay.
( 5,000 miles + - )

I have had most of those problems listed and some are still not fixed. Overall I have not been happy with this truck. It is an '02 ML500 with 140,000 miles does anyone know if it would still be under warranty to get some of them fixed

maf sensor

fuel pump

and with the esp it keeps turning off for no reason

When I bought my 2000 ML, both rear tailights seemed loose despite looking like they were installed properly. There are these $4 (dealer) plastic knurled receiver bits behind the lights that guide them into position. These pieces crack very easily causing the play in the tail light housing.

Can you elaborate on this conductor problem? I think I may have this issue!

I can tell that my mechanic is on the right track in getting my daughters ML320 back on the road!

PC

It's temperamental just when you REALLY need it to work. You get errors for no reason and then it starts working again without doing anything to fix it!!

i need help to fine out what's going on with my truck, someone please!!!!!!

hello to all....what should i look for ml400cdi.... 120.000km.....??

its 2001year.....

i have a 04 ml350 and the radio cd player and amplifier are all link by a fiberoptic cable one will not work without the other so get a radio that dont have that cable and you will be good

I have had or still have the problems noted above from your original post. Add to the D-pillar that in addition to cracking the coating peels and it will fly off at the most inconvenient time; e.g., 70 mph on a freeway. Expensive to replace if out of warranty.

Nice list...thanks for the hard work putting it together.

My wife's ML320 has 193,000 miles and going great. Outside of the sunroof (discarded the parts, not needed), window switch replacement, two door lock actuators and a new expansion tank last week, the ML has been fantastic!

Just spent 3 hours at Old World Automotive getting consultation (yep, he is not just a first-class mechanic!) on a couple of niggling issues:

-small oil leak in front on drivers side - should be easy fix;
-tie rod replacements/bushings on rear wheels.

First plug replacement will be next week. Great mileage/great truck!

Wow. I'm really glad to find this. I was considering three ML's: an '01 ML55 [101K], and '01 ML320 [110K]and an '03 ML320 [125K] and now I may just abandon the whole idea. I was really hoping to get an older ML for winter use, but dang...that is one hell of a laundry list!!

I hope that the number of good vehicles outnumbers the bad actors...most people report problems, not trouble free driving.

if I decide to proceed, at least now I have a whole new list of questions to ask!!!

Thanks to all!