iatacs19

Is it normal for the car to shake/vibrate a bit when idling with A/C off?

ricky bobbie

how many miles r on ur car ? when my car had a shake it was the motor mounts

bushburninc63

it's normal, it's the power of the v8.

iatacs19

125 miles

ricky bobbie

its not the motor mounts then . but car does run at a lower idle when ac is off and would cause a slight shake

musk

It was happened in my car before 4000km but never happened after that.

dumpsta

I often feel a rumbling/shaking sensation when I coast to a near stop. I assumed it was normal.

Now I am cuious and wonder if anyone else have this?

EuroB6

I thinK it's normal. I have 4500 miles and when I crank my car and let it idle, it does have a very slight shake. The engine is huge and should be expected.

joowick

I get that too. I thought it was weird at first. The large V8 could possibly explain this. Glad to know I'm not the only one.

dmyrick

i had the light shaking also. it does fell like motor mounts, but i was sure that the car has some pretty tight motor bolts from the factory, and it went away at about 4000 miles. if its just the motor shaking i thought or engines were factory balanced and that would keep it from shaking?

bushburninc63

I will quote myself, it's normal, it's the big v8 engine.

deaguero

iatacs19:

Up to the 10,000 mile service my C63 never did shake/vibrate at idle!

As I turned the ignition when I picked up my car after the 10K service the car "shook"

I thought WTF happened! Then I realized the dealer must have reflashed my ECU over the Powerchip Tune.

As in the c63 forum thread "PowerChip?" https://mbworld.org/forums/c63-amg-w...powerchip.html

I talk about my reflash and elimination of the problem!

Good luck on getting rid of this problem!

Phil

Savoy6

i just got mine out of the first service monday. It never shook before now it does. im taking it back in the morning to get it looked at. they did load an update to the ecu during the service.

CPD SLK

I just experienced the same exact thing!!!!! I just got it back from the 10K service, and it is shaking noticeably more than usual?????

Is there a problem with the flash? I wouldn't think the motor mounts could be trashed on a new Benz????

CPD SLK

Did you just get your 10K service? I'm curious if it has something to do with a reflash...although my service guy didn't mention it to me.

Uh....no.

This is a C63, not a Olds 422. The motor shouldn't shake the car significantly (in stock form).

sjhugh

My GM LS powered cars with big cams shake and I love it. In fact they also do to a minor extent in stock form, it's tuned into them. I do notice the occassional shake with my C63 on startup and it disappears in about 20 seconds. Unless you hate it, I'd consider it normal for any V8 powered vehicle to want to show it credentials.

eagle_lex

they maybe idleing rough due to a battery disconnect and/or a reflash. thats typical. but def. a sign of a possible reflash. the car maybe relearning.

pntballpunk

normal operation for the engine to have a little shake at idle. after a reflash the engine adaptations for fuel and crank shaft sensor usualy are erased and have to be readapted over time, the engine will shake as it trys to find its happy place. techs just ship the cars and do not perform adapts as the car adapts itself over time better then the techs can. but a little shake at idle is with most 63 vehicles

patboyy

mine shake a little, i mean little, like someone lean his body weight in to the car, and i also recong it is the motor mounts

Savoy6

mine was the air temp intake sensor making it run rich at idle. they ordered a new one for me. noticed that the oil temp is all over the place too after this latest ecu update.

Quadcammer

LOL....Its a big v8 so it shakes? pretty easy to spot those who have never owned a performance vehicle before.

The stock 6.2 doesn't have lumpy cams, it should not noticeably shake at idle.

bushburninc63

my previous ride was an evo with cams, never owned a big liter v8

93VRRex

I experienced the same thing at the 10K service. At first, I thought I was imagining it, but after 2 days of shaking, I looked at the oil level and noticed it was above the high mark.

I took the car back to the dealer with pictures of the dipstick and the SA said it had at least 1/2 quart overfilled.

When I picked up the car, the SA explained that oil is not filled based on dipstick level but on the electronic filling station and it was out of calibration.

After the oil level was corrected, the shaking disappeared.

Owners that experience the shaking/vibration, especially at startup, might want to check the oil level. There is an over-fill sensor, but 1/2 qt over is not enough to trip the sensor.

Scott

CPD SLK

Great information! I will relay this info to my delaer when I go back in.

The shaking has not gone away after over 60 miles of driving, so I'm convinces it's something beyond a simple reflash adapt.

bigheadnyc

what year c63's are you guys talking about? with the shaking?