Rattling under trays

[Jimbo S2]

I am getting a lot of vibration /rattling from the undertrays on my S2. I have tightened them up a few times but the noise returns within a couple of hundred miles. Had a look under the car and where the rear tray overlaps the mid section there is a jointing strip along the edge. I think mine is damaged or maybe not fitting correctly. Is it easy to replace and what should I use? Your help / thoughts please.

Jimbo

[bher]

I can't help you directly but I had a rattle at 2500 rpm on my S2 and it was the protection around the exhaust which rattle against the exhaust itself or the diffusor (I do not remember correctly)
In your case I would check the protection around the zorts and drive without the understray (at low speed) where you know the noise will appear.
Hope this helps

[NathanK]

I have an S1 and the handbrake cable rattled on the undertray between 2k and 3k revs under load. Fixed it by putting a bit of padding on the undertray so it rattles against something quieter. No idea if S2's have a similar arrangement for the the cable too.

[shangani]

1) The undertray rarely causes noise at the join between rear and mid undertrays - there are 5 hex headed bolts size 8 head and they usually don't come loose. To stop rattle here, I put in a couple of bits of double sided tape on the metal to metal bits just to be sure.The allenkey (5mm) headed bolts more central on the rear undertray often work loose. Tighten them up, but care not to damage the head.

2) The suggestion of the rear grill as a good one - see above. Check the clearance around the exhaust pipes.

3rd possibility is the heatshield, but this wouldn't have gotten better fiddling with the undertray.

Options 1 & 2 above.

>> Edited by shangani on Wednesday 19th April 10:45

[gooby]

I would agree with Shangani - the problem is more likely to be heat shield. Recently there have been alot of problems with these heat shields fragmenting.

[bher]

gooby said:

heat shield.

That is the word I was looking for.

Ben

[Jimbo S2]

Thanks guys

Sounds like a job for saturday morning. Will check it out and see if its the answer.

Once again thank you PH'ers

Jimbo