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Discussion Starter · #1 ·
What are the usual culprits for causing this? Can you tighten this or is it on tensioners?
Cheers
Martyn
 

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People generally get them changed at the same time as the cam belt - I don't know if they can be changed without taking the cam belt off though.

(Sorry if that doesn't answer your question directly)
 

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Discussion Starter · #3 ·
Yeah it was apparently done with the cambelt in May but seems to have appeared from nowhere! I hoped to get it done under warranty but I may have left it too long as I have not had time to take car back and warranty is now up :(
 

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If you get an initial screech when starting then applying belt dressing should work. If the screech continues then i'd look deeper into the reason (possible on of the driven componants). The tension is non-adjustable, its automatic. Belt can be replaced without removing cambelt though.
 

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Belt dressing

If you get an initial screech when starting then applying belt dressing should work. If the screech continues then i'd look deeper into the reason (possible on of the driven componants). The tension is non-adjustable, its automatic. Belt can be replaced without removing cambelt though.
Belt dressing :confused: what is that? I've never heard of it.
 

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It is possible you have the wrong size belt fitted, or the tensioner needs tightening, you don't need to remove the cam belt cover to check this.
 

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Discussion Starter · #7 ·
It was done by Alfa specialist so hope its ok sizewise. It seems to only happen at about 1500rpm upward and tends to go away when steering on lock. Hope its not PAS pump!!!
Maybe try some belt slip stuff first! Is tensioner checked from underneath?
 

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Spring loaded tensioners tend to stick after a high mileage as they've been operating in the same position for years, then further wear of the belt is not taken up by the tensioner and a loose belt results which squeals and slips. Check the tensioner wheel and idler wheel bearings are ok and then exercise the tensioner wheel spring action to see if it moves freely.
 
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