Quote:
Originally Posted by GinTonic
I don't want to start a new thread on this topic.
Can someone please confirm:
My engine went into limp home a few weeks back on cold start, and it happened again the other day. Same codes as the first time that lead to Idle Control Valve.
I bought a new fuel breather valve, but decided against buying an idle control valve figuring I can clean it out.
Back in the day when I owned an e36 m3 some 12-15 years ago, this was also a common problem however the solution was cleaning it out with carb cleaner or soaking it in sea foam - I forgot which product it was exactly. But you could clean it out, which would typically resolve the issue.
For the e92 m3, I searched the codes I was getting and from what I found - everyone that has had this issue has replaced the entire ICV unit. Why not clean it? Does that not work or am I missing something? Obviously trying to avoid spending $800 if I don't have to.
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Like you I’ve not heard or read of anyone cleaning the ICV to restore its functionality. I say it’s worth trying and reporting back with your technique and findings (results). If cleaning the ICV doesn’t work then that’s worth knowing. If it does you’ve saved $800. It’s definitely worth a try.