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Author Topic: Auto gear box problem  (Read 2624 times)

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mickfit

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Auto gear box problem
« on: 24 December 2008, 19:28:36 »
Hi folks
          Read a recent post today frm seanboy40.....
 I have a similar problem, my car will select reverse ok but when i select drive or even 1 2 3 no movement at all. Now not even the very slight thump (as you would expect) to let you know that your engaged in gear.....
 Any suggestions :( :(

Please help

mickfit
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Richie London

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Re: Auto gear box problem
« Reply #1 on: 24 December 2008, 19:57:50 »
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Richie London

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Re: Auto gear box problem
« Reply #2 on: 24 December 2008, 19:58:44 »
Quote
try this m8

http://www.omegaowners.com/forum/YaBB.pl?num=1152783586


im a bit of a novice but some great answers will arrive shortly
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mickfit

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Re: Auto gear box problem
« Reply #3 on: 24 December 2008, 20:09:04 »
Richie rich
              Thanx forthe very quick response, but had the oil and filter changed bout 4 wks ago with o.e. filter and gasket and dexron III recommended atf. Now i'm not a mechanic but would might be what you would call "novic mechanically minded", i helped change the oil and filter and i dont think it was ever done (149k). Had a lot of wrk cleaning out the sump and had a bit of bother finding the little magnet....
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Entwood

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Re: Auto gear box problem
« Reply #4 on: 24 December 2008, 20:12:26 »
Now this might sound daft .. but was the level filled CORRECTLY ... on the miggy it is done with the engine running, or you end up with a very low level, which might be your problem ...not enough fluid in the system.

My first thought would be to have the level checked, ensuring the vehicle is level, and the engine is running.
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Richie London

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Re: Auto gear box problem
« Reply #5 on: 24 December 2008, 20:15:22 »
i had a bit too much in mine when i checked it last month, took a bit out and the gear changes are very good now, very smooth when the engines hot and a brilliant kick when i boot it at 70  :-X
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markey mark

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Re: Auto gear box problem
« Reply #6 on: 24 December 2008, 20:15:38 »
i would agree make sure you have the right level in box !  :y
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mickfit

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Re: Auto gear box problem
« Reply #7 on: 24 December 2008, 20:19:53 »
Entwood
          Thanx for your reply, we filled the sump up to the bung level then raised the sump up to box then tightened. I then took it for a short run ( to reach op temp) then rechecked oil level and topped up accordingly so............ not sure wot to do now mate???
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markey mark

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Re: Auto gear box problem
« Reply #8 on: 24 December 2008, 20:23:42 »
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Entwood
          Thanx for your reply, we filled the sump up to the bung level then raised the sump up to box then tightened. I then took it for a short run ( to reach op temp) then rechecked oil level and topped up accordingly so............ not sure wot to do now mate???

get it to opearting temp and check level again on a level ! you might find its dropped a good bit ! do you know how much oil you put in ?? :-?
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mickfit

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Re: Auto gear box problem
« Reply #9 on: 24 December 2008, 20:23:45 »
Well, is the bung the rite level or is their something i'm missing. When car is running i loosen the bung and a little oil comes out.......
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mickfit

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Re: Auto gear box problem
« Reply #10 on: 24 December 2008, 20:28:20 »
No, but when i bought the atf they said it was listed as taken bout short of a gallon....
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Re: Auto gear box problem
« Reply #11 on: 24 December 2008, 20:31:55 »
Quote
No, but when i bought the atf they said it was listed as taken bout short of a gallon....

thats not right iirc they take 7.5L ! :o :o
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Entwood

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Re: Auto gear box problem
« Reply #12 on: 24 December 2008, 20:33:36 »
okay ... if you filled it correctly 4 weeks ago; car level, engine running just to the "bung" level ...... and now when you put the car to the same conditions and remove the bung fluid comes out, then you probably have a fairly serious box problem.

The reason I say this, is AFAIK, as ATF fluid breaks down through excess heat or stress, which can include excess slippage or "burning" at the fluid clutches, the polymers actually get longer, so giving the impression of an overfull system.

I mean .. if it was correctly filled, where has the "extra" fluid come from to dribble out ?

I hope I'm wrong for your sake ... but an expert will pass by and correct me soon I expect ...
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mickfit

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Re: Auto gear box problem
« Reply #13 on: 24 December 2008, 20:41:55 »
I think i will take your advise and recheck the oil level again....

Just want to say that i'm very grateful for all your help

p.s. Just a quick question,
                                  It'll select reverse ok but just no action in any forward gears, i had someone mention to me bout a selector switch???

Any ideas or i'm i grasping straws ::)
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Entwood

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Re: Auto gear box problem
« Reply #14 on: 24 December 2008, 20:56:29 »
Not too hot on the selector switch side of things .. but AFAIK all the valves are electrically operated from the ECU...

If memory serves me.. and it probably doesn't... a feature of low oil level is that reverse works when forwards doesn't, .... I think that reverse has a shorter internal path so requires less fluid to work.

I'm concerned that you filled the sump before refitting and then drove the car without checking the level. You may just be well short of fluid, or you've damaged something. 1 gall (4.5 ltrs) does not seem anywhere near enough fluid IMHO
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mickfit

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Re: Auto gear box problem
« Reply #15 on: 24 December 2008, 21:02:58 »
Entwood
           Definatley gonna get the oil level checked again an would be a really happy man but not gonna get my hopes up.......

Will prob do to the wkend but i'll come back and let you know.

Thanx again for your help mate :y :y :y
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seanboy40

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Re: Auto gear box problem
« Reply #16 on: 25 December 2008, 20:38:56 »
hi hope we all had a nice christmas .........
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unlucky alf

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Re: Auto gear box problem
« Reply #17 on: 25 December 2008, 21:26:34 »
& dont forget to check the level with the engine running & warmed up ;)
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TheBoy

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Re: Auto gear box problem
« Reply #18 on: 26 December 2008, 10:33:42 »
I'll give you all a BIG clue to the issue - the OPs profile suggests its a 2.5TD auto, and in the posts, suggests its done 149k.....

;)


:( :( :(
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mickfit

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Re: Auto gear box problem
« Reply #19 on: 26 December 2008, 12:01:50 »
Admin
        Yeah, theres a lot of miles on it, but did a lot of work to the old girl. Engines like new, clean, I'm sure theres a bit left on her yet :-/
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Entwood

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Re: Auto gear box problem
« Reply #20 on: 26 December 2008, 12:05:36 »
I think TB is implieing the gearbox is FUBAR ... due to the amount of work it has done ...  but a quick check of fluid levels MAY, just MAY, save you a boxchange .... if you're lucky .. :y :y :y
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philhoward

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Re: Auto gear box problem
« Reply #21 on: 27 December 2008, 10:49:38 »
Quote
I'll give you all a BIG clue to the issue - the OPs profile suggests its a 2.5TD auto, and in the posts, suggests its done 149k.....

;)


:( :( :(

That sound like pretty good going for a TD AR25!  About 50k over the norm..
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TheBoy

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Re: Auto gear box problem
« Reply #22 on: 27 December 2008, 13:13:49 »
Quote
Admin
        Yeah, theres a lot of miles on it, but did a lot of work to the old girl. Engines like new, clean, I'm sure theres a bit left on her yet :-/
The car itself will be fine, just the gearbox is simply worn out.  A replacement gearbox from a scrapper should sort her out, and they are not technically difficult to change (just heavy and awkward).

If you are not chipping your diesel, an AR25 off a low mileage 2.0/2.5/2.6 will sort it (need to reuse your old bellhousing and torque convertor), if you are planning on chipping it, you need an AR35 from a 3.0/3.2
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unlucky alf

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Re: Auto gear box problem
« Reply #23 on: 27 December 2008, 13:28:51 »
personally i would opt for an AR35 box if replacement is needed whether chipping or otherwise, you may find a lowish mileage AR25 but its in the lap of the gods as to how its been treated or serviced etc, at least an AR35 should be stronger & a better chance of it being a good`n,,,,best of luck with it :y
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TheBoy

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Re: Auto gear box problem
« Reply #24 on: 27 December 2008, 17:34:35 »
Quote
personally i would opt for an AR35 box if replacement is needed whether chipping or otherwise, you may find a lowish mileage AR25 but its in the lap of the gods as to how its been treated or serviced etc, at least an AR35 should be stronger & a better chance of it being a good`n,,,,best of luck with it :y
AR35 feels as if its higher geared...
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mickfit

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Re: Auto gear box problem
« Reply #25 on: 27 December 2008, 18:53:48 »
Thanx lads 4 all ur help, wen i get round to check'n this oil level, i'll b intouch :y :y :y
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seanboy40

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Re: Auto gear box problem
« Reply #26 on: 27 December 2008, 22:47:38 »
have jst been reading some of your replys to mickfits problem and as you know i have the same 1...............you have given me some great tips so fingers crossed..........................  :y
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seanboy40

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Re: Auto gear box problem
« Reply #27 on: 28 December 2008, 18:39:09 »
just 2 pick ur brains .but whould there be a smell if the auto transmission fluid was low..... ::)
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philhoward

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Re: Auto gear box problem
« Reply #28 on: 28 December 2008, 19:02:14 »
You mean the smell of burning fluid, or the burning of clutches?

If the fluid is a) low and b) black (or dark brown) then the gearbox has burnt out...
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seanboy40

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Re: Auto gear box problem
« Reply #29 on: 08 January 2009, 16:52:14 »
hi guys.............i know im grasping at straws but if my automatic will go into reverse ok.....but wen i out into drive she wont move...wud i need a new selector switch....were wud i get 1 .....thanx guys :-/
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Re: Auto gear box problem
« Reply #30 on: 08 January 2009, 16:54:36 »
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hi guys.............i know im grasping at straws but if my automatic will go into reverse ok.....but wen i out into drive she wont move...wud i need a new selector switch....were wud i get 1 .....thanx guys :-/


Have a butchers on the car parts for sale forum and pm some of the breakers on there
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