[Pinzgauer]

Hi, my 06 E500 wagon has a rough idle but no CEL
When I run a diagnostic I get a Y58/4 (charcoal canister shut-off valve) or Y58/1 (open purge valve) fault.
Could either one be the rough idle issue? Since I'd think bad sparks or injectors would throw a CEL code.
Thank you for any replies.

 

[konigstiger]

Yes, start with canister shut off valve current part # 0004707193 + 2114400334 adapter line. Current purge valve 0004705593 if need be. Not cheap check return policy. BTW not sure what scanner you're using but y58/4 is not applicable but rather y58 for 113.969 engine.

 

[Pinzgauer]

Thank you very much for your reply.
So here then is my real question. Believe it or not but I just yesterday got the car back from the dealer. You may remember that they swapped the rear airmatic bags. When I got the car, the SA told me I had a bad spark plug, which accounts for the rough idle. So a bad plug would through a misfire code, wouldn't it?
Regarding the canister, they did a full diagnostic when I brought it in, no fault on the evap system. But now, after they had to take down the rear end to replace the bags, the canister is right there, now I have a canister issue? Pretty coincidence, don't you think? Or am I way off.
Thank you

 

[konigstiger]

When I got the car, the SA told me I had a bad spark plug, which accounts for the rough idle.

Any proof provided or simply hearsay, where are diagnostics. Yes, "normally" spark plug malfunction would show misfire code. Less than 12 months since repair, see if they will agree to pulling codes again using Xentry.

 

[Pinzgauer]

Looks like my purge valve is a two part component. A "filter(?)" and what looks like a solenoid?
If so, can I test the solenoid by pulling the plug and supplying separate 12v to hear it click? Thanks