Strange Noise From Under The Bonnet??

Strange Noise From Under The Bonnet??

Author
Discussion

griff430

Original Poster:

188 posts

284 months

Tuesday 24th June 2003
quotequote all
Something has started making a rattling noise under the bonnet of my Griffith. I'm sure it's not from the engine, as the frequency of the noise is totally different from any engine speed changes. I've tried to lash everything down that I can see is loose, or potentially loose, like hoses, air intake pipes etc, but the noise still persists, at any speed. It sometimes even occurs when moving the car slowly onto my driveway, which has made me think it could be something to do with the bonnet securing mechanism?

Has anyone else experienced this, or know how to fix it?

Thanks,

Dan.

The Bodyman

357 posts

261 months

Tuesday 24th June 2003
quotequote all
Dan. Does it do it with the bonnet up?

Jon
www.tvrbodyrepairs.com

griff430

Original Poster:

188 posts

284 months

Tuesday 24th June 2003
quotequote all
Jon,

The noise only occurs when the car is moving. It doesn't do it if the car is just standing with the engine running, and the bonnet up.

Dan.

The Bodyman

357 posts

261 months

Tuesday 24th June 2003
quotequote all
Don't know Dan. Hard to say without being there to listen to it. Sorry.

Jon
www.tvrbodyrepairs.com

beano500

20,854 posts

282 months

Tuesday 24th June 2003
quotequote all
"bonnet securing mechanism" - strange oxymoron that one!

Do you mean the whippy little strut that you prop it up by (which has been most effectively replaced by many owners with a broom handle as witnessed at Virginia Waters and several Pie meetings), or do you mean the clever little hingey things at the rear corners, or do you mean the actual catch itself?

I wouldn't suggest that any of them actual "secures" the bonnet!

Has your bonnet started to move around in the front "runners" - in which case it might be more secure if you use some tape to increase the size and therefore perfect the fit of the rollers.

A bit of tape around the "wand" might secure it in its "holder" slightly better.

Apart from this, it is, as usual, difficult to diagnose a noise in the depths of the Cyberspace that is PH. But you know how sometimes you hear a noise from somewhere and it turns out to be somewhere else completely? Are you sure it's from the front? E.g. it isn't a loose exhaust bracket that's echoing around the tub is it? Just a thought.....

EdT

5,132 posts

291 months

Tuesday 24th June 2003
quotequote all
I removed my one & keep in the boot... 2 pros:

1. it never makes a noise now

2. when I grab it, it doesnt burn my hand off

Ed

griff430

Original Poster:

188 posts

284 months

Tuesday 24th June 2003
quotequote all
I've removed the bonnet support before, but that didn't seem cure it, but I think the front runners could be a potential place to look. I will check later. What's the best way to apply the tape? On the runners, or around the wheels themselves?

Thanks,

Dan.

simon.b

1,230 posts

289 months

Tuesday 24th June 2003
quotequote all
I have wrapped tape around the rollers and filled the depression (I assume caused by the roller rattling about) in the runner with araldite.

Cheers,

Simon.

IPAddis

2,479 posts

291 months

Tuesday 24th June 2003
quotequote all
simon.b said:
I have wrapped tape around the rollers and filled the depression (I assume caused by the roller rattling about) in the runner with araldite.


I wrapped tape around the rollers and the bonnet wouldn't shut. Doh.

You can get Isopon P60 (or whatever it is) filler or fiberglass stuff from Halfords. Put a few small layers in the depressions in the bonnet grooves if you can definitely pin this down as the cause.

Try removing the bonnet at the hinges (easily done on the Griff) and driving it down the road and back. Has the advantage of looking well cool in a kind of hot rod sort of way!

Ian A.