Does it only occur once, right after you start driving? If so its an ABS self check, and the power loss is just the brakes quickly being applied.
If if occurs multiple times, its not the ABS self check. That only occurs once at low speed. Is this a Drive-e or 5 cylinder T5?it seems to occur multiple times but not when i am already cruising at higher speed. If I were to stop and go again I will hear it again esp If I step hard on the accelerator, I can usually hear it but it only last for about 1 to 2 seconds. anyway to turn the ABS self check off to test?
This sounds like pinging to me. I'd try a different gas station first and/or higher octane gas if you aren't already using premium.
If the quality of the gas is poor enough, or there is water in the gas, it could be possible. The engine can only compensate so much and still run.Hard to believe a modern (computer/sensor-controlled ignition/timing/detonation/airflow/fuel flow) car will ping...
Like zircular said try 93, from a name brand station (Exxon, Shell, Sunoco etc). It makes sense that you hear the popping in that RPM range if it is indeed pinging. Regular gas can do that in a turbo car if its of a low quality. Yes Volvo says you can use it, but they also say performance will degrade.what grade do you recommend? I have been using regular so far since Volvo said I can use that. I will try premium on my next fill up and test that out.
1 is the most fiscally responsible, and it gives time for Volvo to find a solution. 2&3 are more expensive, and silly if your going to get another Volvo, but happiness and trust in a vehicle have a major factor in the decision to go with this option.My V60 Drive-e was released from the dealer, "repaired" (spark plug one and two replaced and oil trap replaced) on 6/17/2016. On 6/18/16 Exact same problem occurred (knocking and brief loss of power). Today I heard the clicking noise upon accelerating. Not cool.
I'm at 35,400 miles and I can decide if I want to:
1)keep this car and buy an extended warranty up to 100k miles.
2)trade now. Purely out of principle since repairs are covered.
3)keep for one more year, escalate the issue, then trade after the end of the 50k mile warranty.
Any therapists or armchair life coaches out there want to weigh in?