Join Date: Nov 2006
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i had the same problem with my previous laguna (1.9dci) a buzzing noise from this solenoid and occasional limp home mode. I replaced the solenoid and thought i had cured the problem. It resurfaced a couple of months later and then became an almost permenant limp home car. I took it to a specilaist who found a broken wire near the boost pressure sensor. I assume this is the sensor that controls this solenoid.
Just thought i would add this as it may be the problem some people are having and best to check this wire before spending money on parts.
I dont know exactly where the broken wire was but i think it was pretty close to the boost pressure sensor connector (wherever that is!)
Currently in alanb1's garage:
2007 laguna II 2.0 dci