ZT gear change clunk/knock

grendel · 17th March 2007, 14:00

Posted this on MG.org site yesterday but had no response, hoping maybe someone here can give me some advice.

Noticed a bit of a "clunk" (only way I can describe it) on gear change. From 1st to 2nd there is a pronounced clunking/knocking as you drop into gear, it's also there, but not so obvious, from 3rd gear into 4th. Into 1st, 3rd and 5th it's fine, just going into 2nd (especially) and 4th there's this knocking sound, I also get it changing down from 3rd into 2nd.

It sounds like it's coming from just in front of the drivers position, in front of the bulkhead, and seems, from what I can hear inside the car, as if it's nearer the back of the engine. It's not just when you're on the move or even with the engine running. Sit in traffic and run through the gears and it clunks away, even sitting with the engine off it's there when you select 2nd/4th.

Any ideas?

Phil · 17th March 2007, 14:37

Hi, get someone to run through the gears with the engine off and look under the bonnet underneath the battery and you'll see the gear selector leavers on top of the gearbox moving you should be able to see if anything is itting them. On mine it was the hydraulic clutch pipe that had been routed incorrectly.

Rich · 17th March 2007, 14:55

Yup, my money is on Phil's suggestion too

Lates · 17th March 2007, 19:33

Evening Grendel, this may sound odd but have we looked after your car before ? I kinda recognise the user name if need be let me know the invoice number and I will see if I made any notes on your car.

Failing that check the lower rear pendulum mount for wear - heavy / sharp take off produces one hell of a knock through the bulkhead.

Dave Goody · 17th March 2007, 20:09

Quote:

Originally Posted by Lates

Evening Grendel, this may sound odd but have we looked after your car before ? I kinda recognise the user name if need be let me know the invoice number and I will see if I made any notes on your car.

Failing that check the lower rear pendulum mount for wear - heavy / sharp take off produces one hell of a knock through the bulkhead.

I will second that, had a sharp clonk on changing gear, the only way to stop it was ride the clutch, turned out to be gearbox mounting, Dave

grendel · 18th March 2007, 08:53

Had a quick look last night while someone was shifting gears for me, the noise isn't from the gear selector but seems to be coming from somewhere between the engine bay and the inside of the car, right in front of the drivers position, almost around the wiper motor area.

Like I said, it isn't a knock on movement of the car, ie when you take up the drive, it's there just by shifting gears when the engine isn't even running.

And Mr Lates, yes, you've looked after my car before, thermostat housing last year, which reminds me, must book in for a service with you.

Lates · 18th March 2007, 11:42

Definate pendulum mounting. Lead time around 4/5 weeks atm mate.

Mike · 18th March 2007, 12:16

Quote:

Originally Posted by Lates

Definate pendulum mounting. Lead time around 4/5 weeks atm mate.

Have you seen more than a few of these go Lates?

Lates · 18th March 2007, 12:18

To be honest mike not that many this year to date. More assertvie drivers will suffer more than most.

Rich · 18th March 2007, 12:19

Quote:

Originally Posted by Lates

More assertvie drivers will suffer more than most.

How very politically correct

17th March 2007, 14:00	#1
grendel Regular poster MG ZT Join Date: Mar 2007 Location: Birmingham Posts: 75 Thanks: 4 Thanked 2 Times in 2 Posts	ZT gear change clunk/knock Posted this on MG.org site yesterday but had no response, hoping maybe someone here can give me some advice. Noticed a bit of a "clunk" (only way I can describe it) on gear change. From 1st to 2nd there is a pronounced clunking/knocking as you drop into gear, it's also there, but not so obvious, from 3rd gear into 4th. Into 1st, 3rd and 5th it's fine, just going into 2nd (especially) and 4th there's this knocking sound, I also get it changing down from 3rd into 2nd. It sounds like it's coming from just in front of the drivers position, in front of the bulkhead, and seems, from what I can hear inside the car, as if it's nearer the back of the engine. It's not just when you're on the move or even with the engine running. Sit in traffic and run through the gears and it clunks away, even sitting with the engine off it's there when you select 2nd/4th. Any ideas?

17th March 2007, 14:37	#2
Phil This is my second home Rover 75 CDT Connoisseur SE Join Date: Nov 2006 Location: Wales Posts: 12,227 Thanks: 469 Thanked 523 Times in 241 Posts	Hi, get someone to run through the gears with the engine off and look under the bonnet underneath the battery and you'll see the gear selector leavers on top of the gearbox moving you should be able to see if anything is itting them. On mine it was the hydraulic clutch pipe that had been routed incorrectly. __________________

17th March 2007, 14:55	#3
Rich Posted a thing or two http://Roadca.ms - Letting you see what they see! Join Date: Nov 2006 Location: Yup Posts: 1,786 Thanks: 0 Thanked 7 Times in 1 Post	Yup, my money is on Phil's suggestion too __________________ https://VehicleGPS.UK http://www.MotorwayCameras.co.uk

17th March 2007, 19:33	#4
Lates This is my second home Jaguar XE Join Date: Nov 2006 Location: Coventry Posts: 4,321 Thanks: 56 Thanked 59 Times in 55 Posts	Evening Grendel, this may sound odd but have we looked after your car before ? I kinda recognise the user name if need be let me know the invoice number and I will see if I made any notes on your car. Failing that check the lower rear pendulum mount for wear - heavy / sharp take off produces one hell of a knock through the bulkhead.

18th March 2007, 08:53	#6
grendel Regular poster MG ZT Join Date: Mar 2007 Location: Birmingham Posts: 75 Thanks: 4 Thanked 2 Times in 2 Posts	Had a quick look last night while someone was shifting gears for me, the noise isn't from the gear selector but seems to be coming from somewhere between the engine bay and the inside of the car, right in front of the drivers position, almost around the wiper motor area. Like I said, it isn't a knock on movement of the car, ie when you take up the drive, it's there just by shifting gears when the engine isn't even running. And Mr Lates, yes, you've looked after my car before, thermostat housing last year, which reminds me, must book in for a service with you.

18th March 2007, 11:42	#7
Lates This is my second home Jaguar XE Join Date: Nov 2006 Location: Coventry Posts: 4,321 Thanks: 56 Thanked 59 Times in 55 Posts	Definate pendulum mounting. Lead time around 4/5 weeks atm mate.

18th March 2007, 12:18	#9
Lates This is my second home Jaguar XE Join Date: Nov 2006 Location: Coventry Posts: 4,321 Thanks: 56 Thanked 59 Times in 55 Posts	To be honest mike not that many this year to date. More assertvie drivers will suffer more than most.