Gearbox Noise???

[danny m]

Hi all

I have a strange klonking noise on my lcr and i think its coming from my gearbox. Its a Intermitant noise and only happens when ideling (the gearbox feels and sounds ok when driving). You can hear it more if you stick your head by the front passenger wheel. Could it be the gearbox after all the car has only done 15000 miles. I know its hard with out hearing it but didnt know if anyone else has had the same issue.

Any ideas???

Any help would be appreciated starting to bug me now!

Cheers

 

[welsh frtdi]

sounds like a thrust bearing noise or bearing on shaft end

 

[wayne lcr]

drive shaft or end but when you say its doing it when you cars on idle?try pushing the clutch in (not in gear tho) then release it slowly and if the noise comes back its the thrust bearing so that will mean taken the box out

 

[Muttley]

Enigne mounts maybe, especially the dogbone mount? Clutching at straws, but if one had come loose you might hear a clonk that would disappear once there was torque on the engine. A clonk when lifting off the throttle would point in this direction. Just guessing though.

 

[Alexis27]

If you bought it from new, take it into a dealer ASAP. At only 15,000 miles I'd say you had a good case to get help from who you bought it from under the 1979 Sale of Goods Act if the gearbox needs work.

 

[danny m]

hi guys

cheers for all ur replys. i was thinking it might be some sort of bearing/mount but wouldnt it be making the noise all the time? i have 3 months left of my SEAT warrenty so will be taking it down there asap. have taken it down there not so long ago and couldnt get it to make the noise always the way isnt it.

cheers

 

[welsh frtdi]

no probs help is what forums are for !!

 

[danny m]

hi

could it be the big end bearings? or would you get a constent noise rather then an intermitant noise?

 

[Muttley]

danny m wrote

cheers for all ur replys. i was thinking it might be some sort of bearing/mount but wouldnt it be making the noise all the time?

I would expect mounts to clonk at idle, where the engine is not delivering torque to the wheels, and when lifting off the throttle, which is usually a more severe change of torque than putting the power down. However when you're under way, engine and road noise may be masking the clonks.

Should be easy to test though, look into the open bonnet while a mate revs the engine for you. If you get clonks coinciding with the engine rocking, its likely to be mounts.

 

[gingerben]

you ever get any where with this mate, seems very similer to a noise ive got on my lc, on idle i can here a cluncking/ knocking sound coming from gear box/ bottom end of engine, not got car at the min but when its back ill do the clutch test mentioned above.

 

[danny m]

gingerben, i change my dog bone mount the other week and i havent heard the noise since, so this may have sorted it out. im going to keep an eye on it tho.

 

[danny m]

the noise has come back!! the other night i decided to go for a burn gave the car some beans went home and let the car idle and could hear the noise again. do any of you have any ideas as this is really doing my head in now and just want to get it sorted.

cheers

 

[danny m]

sorry forgot to say it only seems to happen after you have driven the car hard.

 

[danny m]

anyone?

 

[csd_19]

Have you checked your dogbone mount again? If the bolts keep backing off, they are going to ruin the threads in the gearbox very quickly.

 

[danny m]

hi

the noise was happening before i change the dog bone mount, the bolts have thread locking compund on them and they are torqued up to the correct torque setting.

cheers

 

[csd_19]

No prob, just when you said it went away after changing the mount

 

[danny m]

sorry mate yeah it did well thats what i thought!

 

[danny m]

I have noticed this noise again. its like a deep / faint knock but its not constant. could it be something like the flywheel? problem is its been like it since ive had it which is 2 years in april. everytime i have taken it to the garage they say they cant find anything wrong with it. very strange and is always the way!

 

[danny m]

anyone