Hi,
I have a Nissan Micra 1995 NCVT (automatic) 1.0 litre as a cheap run-around-town at the minute... it has 70,000 miles on the clock, and is perhaps not in the best condition it could be ;-)
I recently went over a speed-bump, and ever since (perhaps not connected) when idle (even in drive/park) 80% of the time there's a funny deep rattling noise, it can build up quite severely; and i've no idea what it is! It could just be something metallic vibrating. I have briefly compared the under-side of the car to another similar Micra model, and apart from the obvious dirt, everything else looks to be the same; ie:nothing is blatently bumped or out of place.
I read up on google about the possibility of it being the throttle-body, and numerous other things. I was just wondering if anybody had any experience of dodgy idle-noises... the noise is a deep rumble that also sounds like metallic vibrating, but it's very hard to tell what part of the car it's coming from. It's a right-hand drive, and sounds like it's coming from the left-middle section, but I couldn't gaurantee that's where it's emanating from.
Thanks in advance,
Taylor.