Date registered: Aug 2002
Vehicle: Black 2005 ML 500
Location: Galveston, TX
Mentioned: 0 Post(s)
Quoted: 3 Post(s)
Hesitation above 3k RPM when accelerating
I had something similar when one of my coils went bad. At low rpms, it will work fine, but when I accelerated to higuer rpms, the whole engine will begin to miss and hesitate..
Use an OBDII to check which cylinders are missing, and you can change the coils to see if the cylinder number/side changes.. Make sure first that all your plugs/boots and connections are tight. If you have change spark plugs lately and did not push your boots all the way in, you may have similar simptoms.
Careful with the crooked dealers. Normally, they will string you with a list of other repairs/parts.. Normally, just one device breaks at a time.. If they come to you and want to change MAF, O2, Coils, etc.. go to another dealer because they are stringing you and can do it in different ways..
2005 ML 500
Black, 18" AMG Wheels, 285/60R18 Yokohama Geolander HTS + Bi-Xenons(+ Drew's e-code mod, though the reflectors rusted off and do not give out much light anymore), Yakima roof bars, Akebono pads all around. Former vehicle 2001 ML 320 with 108K miles, when traded, and a large repair/defect history. After all these years of owning my current 2005 ML 500, it is a major unreliable vehicle with a very large/expensive repair/defect history and has been like this since brand new.