Ahhhh, silence

Been trying to track down a sporadic clattering-rattle for a few months. Whenever I have the car in the air for other work I spend a few minutes pushing, thumping, and banging.... hoping something will turn up

Today I hit pay dirt. The dust shield for the RH Front brake rotors was clattering when tapped

The culprit was item #13 in this illustration:

https://www.jaguarclassicparts.com/u...-caliper-front

The fastening nut was tight. Note, though, that the widget has a hook-like configuration at one end. The 'hook' engages the suspension "upright" or "vertical link". (Crook your index finger around a pencil....same idea). The hook wasn't grabbing tightly....why I don't know. Anyhow, it was a simple matter to pinch the hook for a tighter fit against the upright.

Hopes this helps someone in the future

Cheers
DD

 

another source of rattling at certain rpms is the splash guard under the radiator. It resonates at a certain frequency.

Yes I know many cars don't even have a splash guard anymore.

and another source of rattles is the heat shield over the manifolds. Same reason.

 

Thanks Doug. Another addition to my growing list of "Tips and Tricks"!