I have a 1997 900 V6 Auto which is baffling the garage. It has developed a serious rattle from the belt end when the engine is under load. The garage changed one of the pulleys on the end of the engine, which cured it for four miles. The rattle - which is speed sensitive - re-started after I accelerated hard.
They thought it might be the alternator, but apparently not. They then fitted a new serpentine belt. Still no cure.
The engine is perfectly smooth and quiet when revved with the autobox in 'park'. The rattle is very metallic and quite loud and gets louder with more revs.
Any ideas? I wondered if it might be something to do with the tensioner arm rather than the pulleys? The car has done 131K with a full dealer history. The cambelt was changed at 102K
thanks
They thought it might be the alternator, but apparently not. They then fitted a new serpentine belt. Still no cure.
The engine is perfectly smooth and quiet when revved with the autobox in 'park'. The rattle is very metallic and quite loud and gets louder with more revs.
Any ideas? I wondered if it might be something to do with the tensioner arm rather than the pulleys? The car has done 131K with a full dealer history. The cambelt was changed at 102K
thanks