mckenny

I have a C230 W203 2k6 V6 2.5l.
I have a problem that my car has unstable rpm tachometer when I start it and the engine is cold. It is automatic up to 1,200 rpm & then down to about 700 rpm immediately like I throttle it. Does anyone have any ideas for this problem?

Moreover, I have 2 error codes said that "P2188 P2190 which show the system too rich at idle bank 1 & 2". Any diagnose for these???

And I want to remove MAF sensor to clean it but I can disconnect the electric connection from this. The picture is below:





I need your help because I find that I cant found 2 clips like some w203 pictures shown on the Internet (yellow arrow)


Anyone has seen these problems & have any ideas, please help me.

Thank you very much!

mckenny

Does anyone help me, please!
I have searched many people can open it but I'm stuck at disconnecting electrical connector step

insame1

I dont mean to be rude but if you cant get to it maybe you shouldn't mess with it.

mckenny

thank you for your good idea. But I can find the way to open, I think I should try 1 time to know my car better than drive to workshop every single time it have CEL.

insame1

Thats a great attitude. Do you have a handy friend that can help you out?

mckenny

Yes, my brother will help me. Before I ask him, I just want to see how much I know my car. That is the reason why I open this topic. Hope everything ok!

miike

It's hard to get the connector off. I'm not certain but it has either a button to push on it to release a latch that holds it together or a latch or two that you need to lift to separate it. Then pull hard it will come off. Be sure to clean the connector with electrical connector cleaner while it's apart.