Hi everyone,

I’m hoping to get some advice from experienced Volvo owners, DIYers, and technicians.

I own a Volvo XC60 (2014, T6 engine), and I recently had a faulty oil separator (PCV/oil trap) replaced at a non-authorised workshop. After the replacement, the check engine light cleared, but the car still experienced rough idling for a while before it stabilised.

Now, I’m involved in a Consumer Tribunal case in Malaysia regarding whether the repair was done according to proper service procedure.

I’d really appreciate some insights from other Volvo owners or mechanics:

1. After replacing a faulty oil separator (PCV/oil trap), what steps are normally part of Volvo’s standard procedure?
   
2. Is throttle body cleaning recommended or mandatory after this replacement?
   
3. Should the PCV hoses be inspected, cleaned, or replaced as part of the job?
   
4. Do Volvo technicians usually perform a crankcase pressure test afterward to confirm proper function?
   
5. Any service manual references, VIDA screenshots, or personal experience would be greatly appreciated.
   

I’m not looking for DIY shortcuts — just trying to understand what a proper, professional Volvo service center would normally do in this situation.

Thanks in advance for your help and expertise! 🙏

– Razi
Volvo XC60 T6 (2014)
Malaysia