I had a similar issue with a 99 V70 turbo. The cabin filter was replaced, but the smell did not go away. It turned out the front exhaust pipe had a small leak at the turbo, and the smell was most noticeable when stopped b/c fumes would rise through the engine compartment and into cabin filter vent. ...

I'm having ETM-like symptoms (rough idle, limp-home mode, etc), but all the codes point to power issues feeding into the ETM. There are no MAF codes, and I have replaced the main engine management relay. Once it gets sufficient power, the ETM seems to function normally. So, I'm left with a couple of...

Update: Identified which wires are responsible for which functions based on a Bosch diagram. MAF checked out okay with the multi-meter. Started the wagon today, and the rough idle returned. While in park, the MAF sensor reading was a bit higher (1.95 V) than when the idle was smooth (1.45 V) and di...

Hello, I've had an intermittent rough idle and hesitation on acceleration. New coils and spark plugs were recently installed, and a quick check of the ETM doesn't look like the problem. So I've turned my attention to the MAF sensor. Decided to provide a photo + voltage measurements taken with a volt...