Ok so I've had this vibration/rattle for quite a few months now. It's completely random and intermittent, and I can't seem to recreate it at all. It sounds like a 'loose washer' type rattle, caused by engine vibration.
I mostly hear it (quite loud) when I first start the car up and it's idling or when driving around in low gears at low speeds, although that's probably just because road and engine noise drowns it out at higher speed. But not every time I start the car... it's completely random. It might rattle only for one or two seconds one day, and the next morning it might rattle almost constantly while I drive down my driveway in 1st/2nd gear. Or it can come and go, rattle for a couple seconds, disappear for a couple more then come back: basically, random.
I've had a check of things like heat shields and other obvious candidates, but they all seemed solid. The car is de-catted, but still has the pre-cat (which actually has a dent on the bottom where I must have hit a rock).
Any ideas?
Can pre-cat internals rattle?
I'm going to be putting the car on axle stands tomorrow if the weather allows, so ANY ideas of what might possible cause a rattle like this would be greatly appreciated! I'm starting to run out of ideas...
I mostly hear it (quite loud) when I first start the car up and it's idling or when driving around in low gears at low speeds, although that's probably just because road and engine noise drowns it out at higher speed. But not every time I start the car... it's completely random. It might rattle only for one or two seconds one day, and the next morning it might rattle almost constantly while I drive down my driveway in 1st/2nd gear. Or it can come and go, rattle for a couple seconds, disappear for a couple more then come back: basically, random.
I've had a check of things like heat shields and other obvious candidates, but they all seemed solid. The car is de-catted, but still has the pre-cat (which actually has a dent on the bottom where I must have hit a rock).
Any ideas?
Can pre-cat internals rattle?
I'm going to be putting the car on axle stands tomorrow if the weather allows, so ANY ideas of what might possible cause a rattle like this would be greatly appreciated! I'm starting to run out of ideas...