Plastic guard under passenger floor pan

[Danny172]

Hi all
I’ve been chasing a really annoying vibration at idle, and have isolated it to the plastic guard under the passenger floor pan. At idle you can see it vibrating, and if I push on it, the vibration has gone away.
Has anyone had this, or managed to fix?
What’s under there, as there is no guard under the drivers side?
Cheers
Danny

 

[mrscalex]

Do you mean the plastic guard between the floor pan and carpet? Or do you really mean something under the floor pan, ie on outside under car?

 

[mrscalex]

I think you must mean under the carpet? It’s there to protect the wiring loom. There should be one either side, each held on with plastic nuts. They can deform a little but I’m surprised they are causing a problem.

 

[Danny172]

I think you must mean under the carpet? It’s there to protect the wiring loom. There should be one either side, each held on with plastic nuts. They can deform a little but I’m surprised they are causing a problem.

View attachment 191833

Hi chaps, thanks for the reply…no this panel is on the outside, affixed to the floor pan

 

[mrscalex]

Not sure what you mean. Not much plastic under the floor pan. There’s the wheel arch liners. Some skids under rear end of outer sill covers. Jacking points. Brake/fuel line brackets. Main fitments are aluminium heat shields.

 

[NZ00Z3]

The Face-lift Z3's that I have also have he plastic under the passengers foot well. Have often wondered when lying under the car, why BMW had a plastic section where there would normally be steel.

Haven't heard of it vibrating before, so well done in finding the source of your noise.

 

[mrscalex]

Can I see a picture? I just can’t think what this is.

 

[david baker]

Hi is he talking.about the fuel filter guard ?

 

[Danny172]

I’ve only really had time to kneel under the car…but where the catalytic converter is, under the passenger floor pan is a plastic panel, it’s this that is resonating