Important! : Something's knocking under my car

1. user_39542 Regular Poster Joined: Nov 2009 calne Posts: 429 137.7bhp Icelandic vts

   #1 29th September 2011, 15:24

   Hi
   
   Something's lose under the front end off my car. It's knocking on the drivers floor plan.
   
   It's a deep thud type of sound.
   
   I've changed:
   
   Driveshafts both new a month ago
   New wishbones also a month old
   New drop links
   Anti roll bar bushes
   New top engine mount
   New powerflex gearbox mount
   
   
   So what could it be???
   
   (all this work was carried out a month ago and all at the same time)
2. Cam Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.

   #2 29th September 2011, 16:29

   I know u said under the car but it could be top mount as thats what wrong with mine.
3. Ben_SaxoForte Saxperience Forum Bum Joined: Mar 2009 Stoke-on-trent Posts: 2640 Mk5 Golf GTTDI Mk2 VTR Project

   #3 29th September 2011, 17:11

   maybe the exhaust knocking under the footwell, did it make the noise before the work was done?
4. iDale Regular Poster Joined: Jun 2011 Somerset Posts: 448 Mk1 Woodland VTS

   #4 29th September 2011, 18:29

   Exhaust perhaps?
5. callan123 Newbie Joined: Sep 2011 Posts: 8

   #5 30th September 2011, 22:05

   mine used to do that does it do it when turning? could be a cv boot or joint sorted out mine
6. user_51895 L-plater Joined: Apr 2011 Devon Posts: 71 Saxo VTR T-Reg

   #6 1st October 2011, 18:41

   Mine did this until about an hour ago, If it bangs when you change gear, or engage reverse or when your reversing? mine was the middle exhaust mount had split and come off the hanger, So was touching the Underbody.
   I bought a new mount and made a tiny rubber wedge and Aryldit'd it where it used to touch.
   It's silent now?
   If any of that helps, what so ever (Y)
7. user_39542 Regular Poster Joined: Nov 2009 calne Posts: 429 137.7bhp Icelandic vts

   #7 3rd October 2011, 22:59

   All the cv boots and joints are fine, I've checked the exhaust. It's fine too.
   
   
   It's something hitting the floor pan :s
   
   Could it be wish bone bush has gone? Although there only a month old and brand spanking new wishbones!
   
   Or what about the main gear linkage. You know the big ball
   Joint kind of thing that runs up the the gear stick itself?
8. JDub Established Member Joined: Oct 2010 Isle of Wight Posts: 1250 Saxo '99 1.1

   #8 3rd October 2011, 23:32

   I had this same issue, was told it could be drop links, etc but then had someone else take a look and was told it was the suspension top mounts, had them replaced and now no more knocking! Plus the steering feels better.

   1 user thanked this post: user_39542
9. user_51379 Saxperience Forum Bum Joined: Mar 2011 plymouth Posts: 2921 mk2 VTS

   #9 4th October 2011, 00:02

   heatsheild for the zorst maybe?
10. user_4387 L-plater Joined: Nov 2004 London United Kingdom (England) Posts: 56

    #10 4th October 2011, 16:38

    This is going to sound wierd but have you checked your exhaust backbox isnt posistioned to close to the rear bumper? Ive jsut had to adjust the brackets of the backbox on mine as it was bouncing off the rear bumper as i was pulling away and moving and felt like it was coming from the front end of the car