Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: moggy on 30 April 2012, 19:28:58

Title: clunking on my auto grarbox
Post by: moggy on 30 April 2012, 19:28:58
Hi guys can someone point me in the right direction.Got home tonight and when i change from park to drive to reverse.I get what i can only describe as a clunking from the auto gearbox,also the car seems to lurch back and forth.When i change to D,P,R and also when driving the gears don't seem to change smoothly up or down.Please excuse me if this has been covered before,but i just want to find out what it is and get one of the OOF mechanics on it.Thanks Dean :) :y
Title: Re: clunking on my auto grarbox
Post by: RobG on 30 April 2012, 19:30:17
Check fluid level. Any history of fluid change, mileage?
Title: Re: clunking on my auto grarbox
Post by: moggy on 30 April 2012, 19:45:55
Check fluid level. Any history of fluid change, mileage?
Hi Rob how are you mate,i have not checked the fluid level,i have no history of fluid change,and the mileage is 149K. :y
Title: Re: clunking on my auto grarbox
Post by: RobG on 30 April 2012, 19:49:54
Check fluid level. Any history of fluid change, mileage?
Hi Rob how are you mate,i have not checked the fluid level,i have no history of fluid change,and the mileage is 149K. :y
OK Dean, and you. Suggest that as a starting point
Title: Re: clunking on my auto grarbox
Post by: moggy on 30 April 2012, 19:57:29
Check fluid level. Any history of fluid change, mileage?
Hi Rob how are you mate,i have not checked the fluid level,i have no history of fluid change,and the mileage is 149K. :y
OK Dean, and you. Suggest that as a starting point
I'm good thanks for asking,problem is i cant get it sorted until friday.And i am doing 60 miles a day to work and back,will it be ok till then mate.  :-\
Title: Re: clunking on my auto grarbox
Post by: geoffr70 on 30 April 2012, 20:55:22
As said you'll need to check the fluid level, it'll probably be low, and will probably need changing anyway as it probably hasnt been done in life of car.

Also one thing I've noticed which might or might not be related to your problem, is that on autos, if your handbrake isn't working as well as it could be, the car 'settles' onto the park peg, then when you move it out of park, it makes a thud noise as the park peg is released.
Title: Re: clunking on my auto grarbox
Post by: JamesV6CDX on 30 April 2012, 20:59:54
Before messing with fluid, check that the thrust washer is intact, else you'l waste your time and money ;)
Title: Re: clunking on my auto gearbox
Post by: moggy on 30 April 2012, 22:13:58
As said you'll need to check the fluid level, it'll probably be low, and will probably need changing anyway as it probably hasnt been done in life of car.

Also one thing I've noticed which might or might not be related to your problem, is that on autos, if your handbrake isn't working as well as it could be, the car 'settles' onto the park peg, then when you move it out of park, it makes a thud noise as the park peg is released.
Hi Geoffr70,your right my handbrake is not working correctly.Could this be my problem,TIA Dean :y
Title: Re: clunking on my auto grarbox
Post by: moggy on 30 April 2012, 22:18:28
Before messing with fluid, check that the thrust washer is intact, else you'l waste your time and money ;)
Thanks for that James,if its the dreaded thrust washer.Is it repairable or do i have a more worrying problem.Dean :y
Title: Re: clunking on my auto grarbox
Post by: moggy on 30 April 2012, 22:46:21
Well from looking at the maintenance guides if it is the thrust washer.It looks like a big job,may not be worth it :-\ :'(
Title: Re: clunking on my auto grarbox
Post by: feeutfo on 30 April 2012, 22:51:47
Service auto box ATF. Exactly the same as in my old 2.5. All was well after. ;)
Title: Re: clunking on my auto gearbox
Post by: geoffr70 on 30 April 2012, 23:07:56
As said you'll need to check the fluid level, it'll probably be low, and will probably need changing anyway as it probably hasnt been done in life of car.

Also one thing I've noticed which might or might not be related to your problem, is that on autos, if your handbrake isn't working as well as it could be, the car 'settles' onto the park peg, then when you move it out of park, it makes a thud noise as the park peg is released.
Hi Geoffr70,your right my handbrake is not working correctly.Could this be my problem,TIA Dean :y

Well this would only account for one of your symptoms.

probably not related but something I've noticed, and it helps to rule things out. If you're sat in traffic, in drive holding it lightly on the foot brake, or an inefficient handbrake as you know you're about to set off, and happen to turn the climate control on, this will cause the engine to surge for a second or so and then settle again. Whilst in drive, with light brake pressure applied this can obviously cause the car to surge a bit.