Engine fluctuation during idle

[Merster]

I have this issue. When the car is stationary, I can see the the rpm will dipped a little and the car will vibrates.

Anyone experience this?

[Ody_2004]

How old your ride and mileage?

 

Could be Idle Air Control Valve?

[Merster]

Thanks for reply.

It's 100k. Where is the air control valve located at?

You experience this before?

[mvdennis]

Yes sounds like air con valve, and also engine mountings need to be replaced soon!

[littlewhite]

yup bro just got mine changed....some valves were gone.....i thinkits the intercooler.... engine mount also changed......when all this happen i had sudden lost of power but..after changing its flying again......mine is reaching 100k also.

[Merster]

Yes sounds like air con valve, and also engine mountings need to be replaced soon!

It's also occurred when aircon is off.

[Merster]

Appreciate all the feedbacks gathered.

Maybe the mounts still can last awhile more.

It's the sensors / valve are intermittently giving trouble, guess it's difficult to pick up even if I send car in for diagnostic.

[mymercs]

yup bro just got mine changed....some valves were gone.....i thinkits the intercooler.... engine mount also changed......when all this happen i had sudden lost of power but..after changing its flying again......mine is reaching 100k also.

Bro, spot on man... Mine reached 130k and the major issues are up. I just changed engine mounting, tension cables (causes the major vibration when engaged gear D), aircon cooling unit, gear box and so on....

[mvdennis]

Bro, spot on man... Mine reached 130k and the major issues are up. I just changed engine mounting, tension cables (causes the major vibration when engaged gear D), aircon cooling unit, gear box and so on....

 

you changed gearbox???? 

[mymercs]

you changed gearbox????

Yup. Had to change as the gear was stuck and jammed at 3rd. I saw in the earlier post someone with a newer version of W246 also faced the same issue, so this is not good for B-Class owners. I am bracing for my new W246 for such impact as I have experienced it with my W245.

[B170]

How much did it cost to change the gear box ? you done it at C& C ?

[twisti]

I also experienced this. When the car is stationary, the RPM will dip slightly followed by some shaking. But didn't get any CE light or error messages. I read from other forum this is normal for the B class?

[arf-er]

Yes... had same problem when my B hit 110K km...  replaced an intake vacuum valve (a small plastic hose-connector the size of an USB thumbdrive) and the problem went away. There are several vacuum valves in the system, so the trick is for ur mech to identify which one is leaking.

It was a Bosch part, + labour cost around $100 to replace.

[Watisthis1]

Yes... had same problem when my B hit 110K km...  replaced an intake vacuum valve (a small plastic hose-connector the size of an USB thumbdrive) and the problem went away. There are several vacuum valves in the system, so the trick is for ur mech to identify which one is leaking.

It was a Bosch part, + labour cost around $100 to replace.

Dear arf, I have got the same engine fluction problem. Can I know which workshop you go and where is this valve located? Thanks for your help.

[Mbamg]

Isn't it the ECO Start Stop function?

[John35k]

Dear arf, I have got the same engine fluction problem. Can I know which workshop you go and where is this valve located? Thanks for your help.

Hi

U solve this problem ? Pls advise as I also have this while idling only air con is on

[John35k]

On 30/09/2014 at 0:07 PM, Watisthis1 said:

Dear arf, I have got the same engine fluction problem. Can I know which workshop you go and where is this valve located? Thanks for your help.

Hi

have you solve the problem ? 

Share please as I still have this problem