The largest and best supported Jaguar cars enthusiast site on the Internet!

Serving Enthusiasts since 1993
The Jag-lovers Web

Currently with 3,166 members

Flexplate Clatter

Flexplate Clatter

BJ Kroppe


Don't rule out a loose transmission flexplate (driveplate, flywheel). When you say it is loudest under the car, this makes me think of the flexplate. Does the noise get loudest when you pull away from a stop sign or traffic light, then go away at higher vehicle speeds? Then it is likely the flexplate. The problem occurs when the rivets which fasten the plate to the ring gear get loose, allowing the plate to rattle on the ring gear.

    Here's the how to tighten them.
  1. Put front wheels on jack stands.
  2. Remove sump-gearbox stiffening plate from bottom of engine oil pan/transmission bell housing.
  3. Remove semi-circular (black) dust shield/plate from the front of transmission bell housing.
  4. Remove two plastic protective screens from bell housing.
  5. Locate rounded (vs. flat) side of rivets which rivet the starter ring gear to the flexplate. The round heads are against the rear face of the flexplate.
  6. Using a roughly 4" or longer center punch, put the tip of the punch at the interface of the rivet head and flexplate. Access the rivets throught the holes where the plastics screens were.
  7. Using BFH of choice, deliver several stout blows to the punch. The result is that there will be a dimple in the rivet head which squishes metal against the flexplate, producing some tension in the rivet. Looseness in the rivets is what causes the clattering.
  8. Repeat steps 5-7 10 times. You will have to bump the starter with the ignition key to reach all 10 rivets.

This fixed my clatter problem. It is totally gone.

Warning: Jan Wikstrom recommended using a small sledge hammer to back-up the flexplate (on the front face of the flexplate, through the semi-circular opening). My guess is that this will prevent bending of the flexplate due to the BFH blows. I think this is a good idea, but since my spouse isn't thrilled with lying on a dirty, cold (25F) garage floor at 11:00 p.m. I didn't have a third hand to hold the sledge-dolly. I'm not sure if I bent my flexplate (even slightly) but I have had no untoward effects so far. If you can use something to absorb the BFH blows, then I think this is a good idea.

Looking for or selling Jaguar Automobilia? Then use our absolutely free Jaguar Collectibles Exchange! Got some pictures you would like to share with other Jag-lovers?
Then try our automated Photo Album and post some images!


Please help support the move to the new site, and DONATE what you can.
A big Thank You to those who have donated already!



Go to our Homepage
Improve your Jag-lovers experience with the Mozilla FireFox Browser!

  View the latest posts from our Forums via an RSS Feed!

Jag-loversTM Ltd / JagWEBTM 1993 - 2023
All rights reserved. Jag-lovers is supported by JagWEBTM
For Terms of Use and General Rules see our Disclaimer
Use of the Jag-lovers logo or trademark name on sites other than Jag-lovers itself in a manner implying endorsement of commercial activities whatsoever is prohibited. Sections of this Web Site may publish members and visitors comments, opinion and photographs/images - Jag-lovers Ltd does not assume or have any responsibility or any liability for members comments or opinions, nor does it claim ownership or copyright of any material that belongs to the original poster including images. The word 'Jaguar' and the leaping cat device, whether used separately or in combination, are registered trademarks and are the property of Jaguar Cars, England. Some images may also be Jaguar Cars. Mirroring or downloading of this site or the publication of material or any extracts therefrom in original or altered form from these pages onto other sites (including reproduction by any other Jaguar enthusiast sites) without express permission violates Jag-lovers Ltd copyright and is prohibited
Go to our Homepage
Your Browser is: CCBot/2.0 (, IP Address logged as on 8th Jun 2023 04:03:32