Can change gears while clutch is not depressed.

Engines, Transmissions & Final Drive questions and answers

Moderators: timk, Stu, zombie, Andrew, The American, Lokiel, -alex, miata, StanTheMan, greenMachine, ManiacLachy, Daffy

Jaron

Can change gears while clutch is not depressed.

Postby Jaron » Thu Sep 01, 2011 12:18 pm

OK well after my accelerator pedal fell off :roll: , my step dad has since done a DIY job to hold it together to drive it to the mechanic.

Now it seems that someting is wrong with the clutch/ clutch plate?

Although the clutch pedal is out you can freely change gears 1-5 & R.

The clutch still feels like it has presure.

Has anyone else come across this problem... :idea:

This MX5 isn't making it easy for me to keep it, might end up selling it as I am tired of stuff just breaking for no reason. :(

Kobsy
Fast Driver
Posts: 128
Joined: Thu Dec 09, 2010 12:46 pm
Vehicle: NB8A
Location: NSW - South Coast

Re: Can change gears while clutch is not depressed.

Postby Kobsy » Thu Sep 01, 2011 1:29 pm

So...I'm assuming the clutch just didn't fail at the same time? :?

Clutch pedal feels normal?
Is selecting gears, clutch in or out while engine running?
Car doesn't move at all?

My thoughts...Clutch plate!
1999 Red NB8A MX-5

93_Clubman
Speed Racer
Posts: 11856
Joined: Mon Aug 08, 2005 11:35 pm
Vehicle: Clubman
Location: Melbourne

Re: Can change gears while clutch is not depressed.

Postby 93_Clubman » Thu Sep 01, 2011 1:35 pm

More info required, i.e. car stationary or moving, motor running or not running?

Given recent DIY on accelerator pedal mounting, was clutch pedal adjustment affected, resulting in clutch pedal now being partially depressed?

Jaron

Re: Can change gears while clutch is not depressed.

Postby Jaron » Thu Sep 01, 2011 2:07 pm

Thanks clubman and Kobsy!

Car was running.

Doubt it would be anything related to the accel pedal as it looks to be a completly seperate from the clutch mechanism.

Sticky clutch/pressure plate? can this happen? Any ideas on a fix ?

Am I not driving the car hard enough? lol :lol:

Note: link to accel pedal problem thread.. it was resolved. (pics ect)
viewtopic.php?f=29&t=48432

93_Clubman
Speed Racer
Posts: 11856
Joined: Mon Aug 08, 2005 11:35 pm
Vehicle: Clubman
Location: Melbourne

Re: Can change gears while clutch is not depressed.

Postby 93_Clubman » Thu Sep 01, 2011 2:33 pm

Jaron wrote:Car was running.

Stationary or moving?

Jaron

Re: Can change gears while clutch is not depressed.

Postby Jaron » Thu Sep 01, 2011 3:13 pm

93_Clubman wrote:
Jaron wrote:Car was running.

Stationary or moving?



Stationary can freely move through the gears while car is on and the clutch ISN'T depressed..... what the? :o

User avatar
NitroDann
Forum sponsor
Posts: 10280
Joined: Thu Nov 05, 2009 12:10 pm
Vehicle: NA6
Location: Newcastle NSW
Contact:

Re: Can change gears while clutch is not depressed.

Postby NitroDann » Thu Sep 01, 2011 3:26 pm

So the clutch isnt engaging at all. I bet the adjuster has been messed with.

Really, these are as reliable as motoring gets so im surprised you feel that way.

Dann
http://www.NitroDann.com

speed wrote:If I was to do it again, I wouldn't even consider the supercharger.

93_Clubman
Speed Racer
Posts: 11856
Joined: Mon Aug 08, 2005 11:35 pm
Vehicle: Clubman
Location: Melbourne

Re: Can change gears while clutch is not depressed.

Postby 93_Clubman » Thu Sep 01, 2011 4:00 pm

As Dann says, MX5s are very reliable, which of course doesn't mean you won't get the odd one that's a problem due to lack of care & maintenance by previous owners.

Ref being apparently able to change gear while engine is running & car is stationary, presumably without stalling, I'd first be looking in the gearbox turrett which the gear lever fits into.

Jaron

Re: Can change gears while clutch is not depressed.

Postby Jaron » Thu Sep 01, 2011 6:11 pm

Anyone know where the adjuster is that NitroDan is referring to?

User avatar
Russellb
RIP Nov 2014
Posts: 692
Joined: Sat Aug 13, 2005 9:22 pm
Vehicle: Clubman
Location: Harden NSW
Contact:

Re: Can change gears while clutch is not depressed.

Postby Russellb » Thu Sep 01, 2011 7:09 pm

I'd say that the fricton plate is F%$#D
see it in alot of cars but not and MX5 YET
I dont think it is adjustment as you can still feel pressure on the clutch pedal
a quick check to confirm is to take off the clutch slave (2 bolts) and recheck
Wont be a stuck pressure plate as you would have drive in any gear, like a busted slave Cyl
My ClubmanRebuild
MX5 Solution Canberra ( aka carco )http://www.carco.com.au
Russell's Race and Rally Service
MX5 SE Rally car is HERE :)

olboy
Fast Driver
Posts: 204
Joined: Tue Sep 22, 2009 7:28 pm
Vehicle: NA6 - Turbo
Location: NSW South Coast

Re: Can change gears while clutch is not depressed.

Postby olboy » Thu Sep 01, 2011 9:24 pm

Sounds like the clutch might be fine but the problem could be further back
Maybe no teeth left on the input sharft
Or more likley the diff has let go so no drive

olboy

olboy
Fast Driver
Posts: 204
Joined: Tue Sep 22, 2009 7:28 pm
Vehicle: NA6 - Turbo
Location: NSW South Coast

Re: Can change gears while clutch is not depressed.

Postby olboy » Thu Sep 01, 2011 9:27 pm

On second thought the gears would still crunch so maybe not

olboy again

Mr Morlock
Speed Racer
Posts: 6444
Joined: Mon Feb 04, 2008 11:40 am
Vehicle: NB8B
Location: Melbourne

Re: Can change gears while clutch is not depressed.

Postby Mr Morlock » Fri Sep 02, 2011 8:03 pm

If you can select gears engine running and pedal not pushed to the floor then the clutch is disengaged . If it was an old motorbike it would be because the the pressure plate is sitting off the friction plates because there is too much adjustment and you would need to reduce to get free play. You can adust free play at the top of the clutch release lever but you should be consulting a repair manual. No car or component actually fails for no reason- there is a always a root cause. On the other hand if the clutch feels like it disengages then possibly there is no output to the tail shaft. If the tail shaft turns with engine running and in gear then maybe the fault is in the rear axle. Don't think about checking this unless the car is jacked up and secure. If the clutch is disengaged you should be able to push it in gear- try that without depressing the clutch - you could try this is by pushing it. Puzzling.

Kobsy
Fast Driver
Posts: 128
Joined: Thu Dec 09, 2010 12:46 pm
Vehicle: NB8A
Location: NSW - South Coast

Re: Can change gears while clutch is not depressed.

Postby Kobsy » Sat Sep 03, 2011 10:53 pm

I think everyone has pinned this down to 3 scenarios:
1 - Clutch adjustment is so far out its crasy. (Your dad has messed it up somehow while doing the accelerator pedal?)
2 - Clutch plate has packed it in. (Severly burning the clutch can ruin it to the point where friction materal does just fall off, I have seen this happen lol)
3 - Clutch hydraulics? (Although clutch pedal feels fine so I doubt it.)

But I still have 2 questions I would like to have answers for...
1 - When did this problem happen?
2 - While the engine is running and clutch out, in whatever gear/neutral. Can you hear anything in the gearbox moving? A bearing or something?

Although I still think it is the clutch plate!
1999 Red NB8A MX-5

DJC

Re: Can change gears while clutch is not depressed.

Postby DJC » Sun Sep 04, 2011 4:39 pm

1. Once the accel pedal fell off towed the car 2min home. Then made a temp late to hold the accel bracket onto the floor so it would work... then turned the car on and now this problem....

will take a look if I can hear anything.... lol that doesn't make sense but will check it out... sounds like its something pressure plate or friction plate related..


PS: this is jaron, because I updated my email in my account settings, auscar never sent confirmation email. So needed to create a new account


Return to “MX5 Engines, Transmission & Final Drive”

Who is online

Users browsing this forum: No registered users and 130 guests