Hi, I have an Opel vivaro, 2014, ecoflex cdti.
2 days ago I started to hear a whistle sound which appears to be coming from the ventilation hole located under the driver seat. I can hear the sound only when the engine is hot.
In Addition to say the issue is reproducible after driving for about 15 minutes, stop the engine, start it again (or just ignition). Fan, heating, AC are off.
Hmm, could be an after blow function. Does the Car have Air Con? Some GM products with Air Con. have an after blow function to dry out the evaporator after the Air Con. has been turned off. Stops the build up of mildew.
Mark Dalton wrote:Hmm, could be an after blow function. Does the Car have Air Con? Some GM products with Air Con. have an after blow function to dry out the evaporator after the Air Con. has been turned off. Stops the build up of mildew.
Yes, the car has AC, but I did not turn it on for at least last 3 months.
Thank you all for your support.