Reminder: on June 10th, we had to interrupt an outing because of a noise in the engine compartment. Follow us in the workshop and see what we did to identify and fix that noise.
In the workshop, with the vehicle stationary and the engine idling, a noise is indeed noticed. This noise comes from the damper pulley at the front of the engine. To access it, no other choice than to remove the radiator (after having emptied the whole circuit) but also the bonnet, the oil cooler… to get the following result:
A piece clearly appears to be too loose:
On closer inspection, it can be seen that the clamping nut has gone over the part that is supposed to prevent it from turning.
We dismantle the whole piece.
We check that the pulley is in good condition, as well as the keys.
We reassemble the all pieces, taking care to tighten sufficiently.
Results : the noise is gone but...
From now on, if the engine sound does not present any anomaly at idle (500 rpm), we perceive a clacking sound as soon as we approach 1000 rpm. However, this clattering disappears at 1500 RPM.
The engine does not seem to be at fault, we will continue our investigations over the next week.