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2015.5 s60 T5 clicking/ticking noise when accelerating

144182 Views 582 Replies 117 Participants Last post by  klr142
Has anyone experience this issue? I have a 2015.5 S60 T5, when accelerating, I get this ticking/clicking noise for about a second or so. And it feels like its losing power. Usually occurs between 3k to 4K rpm. I feel like I don't get that quick torch. Any idea?
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Hard to believe a modern (computer/sensor-controlled ignition/timing/detonation/airflow/fuel flow) car will ping...
Haven't noticed it on mine--am running Shell 89. Wonder if it is a normal fuel delivery sound, maybe injectors? Something to do with the intake/exhaust? Something to do with the torque converter? A relay clicking that's tied to some ECU monitoring system?
I've had my '15 since early '14 and I've never heard said noise--less than 12k miles though... I've run all octane grades, 95% Shell, and have settled on 89.
Thanks for the interesting post on Chevron's research, but I'd save the tongue in cheek ambulance chaser comments for the Porsche forums...:D
Several of us think it is the waste gate relieving; can it be adjusted? Another pound or two could make all the difference. Also, it's fall in California and the fuel grades change to a higher RVP for the next six months (RVP is Reed Vapor Pressure of the fuel ICYDK). My T5 V60 clicks less during the season but still does it. Same reply from Volvo, can't duplicate, no code, so no can fix. Anyone come up with a fix?
Interesting--if it IS just the waste gate relieving, then that's normal and we are driving the cars as we should, right? Except for those who've found wasted plugs, which might be fuel-based...the game is afoot...
Mine has been serviced twice--at the year mark--since purchase. Except for the road trip from Tampa to TN and back, always had 89 or 93 octane. Almost 13k miles, so don't drive it a lot. 93 octane in there now, runs the same as the 89 octane. No issues.

The burnt plug thing volvotech101 mentions is interesting...maybe a bad batch of plugs? Or plugs that need to be better for this type of engine?
Lots of us following this thread who won't post something like, "I've never, ever had this issue and the engine is fine," because, we, well, you know...;)
Never run it, but ARCO is listed as Top Tier gas...just maybe not in PR?
Well, on occasion a lurker will chime in and say they've never had this problem...guess it's my turn...maybe someone should start a poll...might be a worthy sample...
Glad that 0W-20 oil is working for you; who whudda thunk of such a simple fix...can't believe it hasn't been tried B4?
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