55Power

Hi guys. I just recently noticed that my 2002 CLK55 seemed to have a bit of a flat spot around 30-35mph. When I am driving around that speed and hit the pedal hard without the kickdown being depressed, it does not seem to rev very hard as opposed to when I punch it off the line or once I am above 50mph. I have thought about the MAF but the car idles perfectly smoothly and has tons of power outside of this "flat spot" rolling at 30-35mph. Off the line it takes off like a bat outta hell just like on the freeway. During these times, the car seems like it downshifts maybe 2 gears when I punch it. When I do this at 30mph, the rpm start much lower like at 2500rpm unless i hit the kickdown. Could this be that the car is in the middle of some cruising gear for economy city driving? CLK55 owners, plesase chime in. Thanks in advance for your answers and thoughts!

click430

Have you tried the adaptive throttle reset?
Key to pos2 (don't start it)
floor the throttle and hold for 30 sec.
with throttle on floor, switch key to off, but don't remove, then let the throttle up
Remove key after 2 minutes...
I think that this is the sequence. Other readers should chime in...

55Power

Click430: Thanks for the response. I have not tried the adaptive throttle reset? Actually I have never even heard of it. I'm going to look in the manual then give it a shot. Thanks for your input

Chappy

I, too, have an '02 CLK55, but have not experienced your symptoms. Please let us know what you find out.

55Power

Chappy: After driving around the vehicle a bit more, I think that I may just a little too much of a perfectionist. I tend to notice every little thing about the vehicle and after reading the MBworld forums, frankly I think that I am just a bit paranoid after reading about all the MAF problems.
I drove the vehicle a bit more and notice that when I encounter this "flat spot" i am usually puttering around (reving at 1500-1800 rpm). When I hit the gas hard (without kickdown) it seems to downshift 1 gear and start reving at about 2500rpm's and obviously not pull when its like at 3500rpm+. When I punch it while i am driving say at 2500rpm's already and I punch it, it takes off like a bat outta hell. It seems reasonable to me that the vehicle is choosing a fuel efficient gear when it knows I am "puttering" around town. When I punch it right off the get go the car pull hard to XXX.rpm (can't really look at the gauge when I am doing this cause the road disappears too fast) there is no flat spot to be found.
Just my .02

Attached is a pic of my 02 CLK55.
Rims just went on last week. 18' Mono 2's with 235 and 265. Suspension to be installed next week.

clkal

sorry to be off topic, but you gotta get the flat hood emblem.

Chappy

Our cars are equipped with driver-adaptive transmissions. Perhaps it is still "learning" your driving style.

Congrats and welcome

55Power

Clkal: I have been thinking about it but kinda like the old school look of the emblem. Btw: Where is the best place to buy the badge if I were to switch?

Chappy: Thanks for the hospitality

CERY

I don't mean to hijack the thread, but is this adaptive throttle and shifting aplicable for a 99 430?

MarcusF

Yes, the driver-adaptive transmission was standard on your 1999 430

lowphat

55Power - your ride looks great - CLK's look so good in dark colors. Like the rims too. Welcome.

55Power

Thank's for the compliment Lowphat Just waiting to get my suspension on. Been trying to take some better pictures but it keeps raining the day after I wash and wax it Look's like you got an awesome ride. Lovin the mod's