Harger99

Hello,

I am new to the site and to owning a Mercedes. I have had my GL500 for about 6 months now and I am having some troubles recently. The car has begun to run very rough and now will hardly run at all. I am getting codes that all cylinders 1-4 are misfiring. Also getting codes P0102 - MAF, P0101 MAF Air flow circuit range and P2182. I have just replaced the MAF and this did not help the problem. Any advice would be greatly appreciated. Thank you.

Same as a GL550 2008 in the states.

Matthew

BlownV8

Can you be more specific on the symptoms?

wease206

Coil and clean your MAF

Harger99

Thank you for the responses,

The engine is running very rough at idle almost dying. If I rev to over 3000 RPM it seems to run ok. Cannot move it as if i put into gear it dies. It is also shaking badly when at idle.

I have changed the coil packs from one side to the other but still same issue. I have a new MAF sensor installed.

Any thoughts?

Thanks Matthew

Harger99

Update to my post. If i just turn the key on and read any faults i am getting a p1337 fault code although i cannot find this fault in the list of faults for a mercedes????

If i Just turn the key on and let the car run for 20 seconds i am getting a misfire on cylinder two ad a p0629 fault code.

I just changed all of the spark plugs because they are cheap and it was worth a try. It does start right away now but still runs very rough at idle.