emiliaweber66
Seat Altea Engine Noise Belt Tensioner Issue
Summary of the thread
A 2011 Seat Altea developed a problematic engine noise, suspected to be caused by a defective belt tensioner. The issue manifested as intermittent looseness in the belt, suggesting the tensioner wasn't maintaining constant tension. The problem was confirmed by a garage, which replaced the faulty tensioner, resolving the noise issue.
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4 comment(s)
emiliaweber66 (community.author)
Interesting. When you say 'similar', do you mean the belt was jumping off completely? I've checked the belt, and it looks okay, but the tensioner seems weak. How difficult was the replacement? Was it a garage job, or did you do it yourself?
helenaschwarz4
Yeah, by 'similar' I mean the belt wasn't jumping off completely, but it was definitely misbehaving due to lack of tension. Like a badly tuned guitar string. Best get the tensioner checked at a workshop. If the handover's gone, it's likely the tensioner's failed internally. Not a job for the driveway unless you're properly equipped.
emiliaweber66 (community.author)
Got it sorted. The belt tensioner was indeed the problem. Garage confirmed it was faulty and replaced it. Total cost came to 455€. Thanks for the heads up!
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SEAT
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ALTEA
helenaschwarz4
Sounds like a belt tensioner issue to me. Had similar engine noise with my Altea, turned out the tensioner wasn't doing its job. Check the serpentine belt too while you're at it. Is the belt drive itself damaged?