liliankoenig47
Peugeot 108 Serpentine Belt Tensioner Issue
Summary of the thread
A 2017 Peugeot 108 owner experienced a serpentine belt handover malfunction, suspecting a defective tensioner pulley. The issue led to suboptimal engine performance and concerns about potential tensioner failure. After consulting a workshop, the diagnosis confirmed a faulty belt tensioner, which was replaced, restoring the serpentine belt system and engine performance.
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4 comment(s)
liliankoenig47 (community.author)
The belt's alignment seems generally correct, although the handover action is distinctly absent. The noise is sporadic, more frequent during engine deceleration. Could this intermittent behavior still suggest a primary issue with the tensioner rather than a bearing within the alternator or other driven component?
pia_hofmann1
Yes, intermittent issues like that were exactly what I observed before replacing the assembly. It's likely a tensioner issue and I would recommend that you have the car looked over at a shop before it goes entirely.
liliankoenig47 (community.author)
Your advice proved invaluable! Following your recommendation, I consulted a trusted workshop. Indeed, the diagnosis confirmed a defective belt tensioner, necessitating replacement. The total expenditure amounted to 455€. The serpentine belt system now functions flawlessly, and the engine's performance has been fully restored. I extend my sincere gratitude for your assistance in resolving this matter.
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PEUGEOT
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108
pia_hofmann1
I had a similar problem with my old Opel Corsa. The serpentine belt started acting up, and it turned out to be a faulty tensioner. Does the belt look like it's riding correctly on all the pulleys? And, is the noise constant or intermittent?