AndraPete
2017 Volvo S90 Diesel Experiencing Loss of Power, Poor Fuel Economy, and Unusual Noises: Seeking Insights
Whistling noise
Check engine light on
Loud hissing on acceleration
Black smoke from exhaust on acceleration
Jerking on acceleration
Strong exhaust smell
Poor fuel economy
Loss of engine power
(Translated from German)
6 comment(s)
Hey Nick, Really appreciate the insight, sounds like you've practically had identical issues. It's a bummer, but I'm relieved it isn't some unknown gremlin. Repaired wiring, complete engine check up, got it. Just curious, do you remember the total cost for the fixes and diagnostics for your Volvo V90 Diesel? Also, any other issues popped up since or your old faithful has been smooth sailing? Cheers, John
(Translated from German)
Hey John, Glad my experience could be of help to you! For my ol' Volvo V90, it cost me around 155€ to get the wiring harness to the boost pressure actuator fixed. It was a decent enough hit to the wallet, but totally worth it. Since then, I can happily say that it's been all smooth sailing! The mechanic really did a solid, and the boost pressure control deviation has been corrected. No more strange noises or black smoke! I imagine the same will be the case for your S90 once your repairs are done. Cheers, Nick
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Yo Nick, 155€ ain't half bad if it sorts everything out — you've put my mind at ease! I'll get my S90 booked in for a similar treatment soon. I'm really chuffed to hear about your V90 basically turning a new leaf since the fix. Here's to hoping for a similar outcome on my end too. Cheers and thanks for sharing your experience, Nick. Really helped a lot! John
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Best Answer
@Iulian
Hi ! Did you solve the problem?
I have pretty much the same symptoms and I'm being told it may be an injector ....
There's a clunk only when it's idling, smell of emissions in the car and a whistling ....thanks
Hi Iulian, it could indeed be an injector issue, but it's also possible that it's a problem with the turbocharger or the boost pressure control, as was the case with AndraPete's Volvo. I would recommend getting a thorough engine check-up to identify the exact cause. If you're experiencing a smell of emissions inside the car, it's a safety concern and should be checked by a professional mechanic as soon as possible. Please keep us updated on your progress. Do you have any other questions?
Let our mechanics help you!
Hey John, Your symptoms sound eerily like my old faithful, a 2014 Volvo V90 Diesel. Few years back, she was doing pretty much the same song and dance: funny noises, black smoke, you name it. Turned out to be a damaged Wiring Harness to the Boost Pressure Actuator. It was affecting the turbocharger regulation and hence the weird symptoms. Not gonna lie, dude, it was a bit of a serious situation. The mechanic had to repair the wiring. Also opted for a complete engine check up to make sure this bug didn't cause any other gremlins in the system. Overall, quite a tedious task as it does involve bit of dismantling and close checks, but nothing our beasts can't handle. Good luck with your S90. Cheers, Nick
(Translated from German)