UKSaabs

THE site for UK Saab people!
It is currently Sun Aug 18, 2019 1:34 am

All times are UTC



Forum rules


When you put a new thread up in the Workshop please put your car's year and model in the thread title, along with just a brief indicator of the problem.

Car Year - Car Model: Brief description of issue. EXAMPLE- 1999 9-3. Problems starting when hot.

Please also add as much information as you can about the problem, to your post.

This will help us to help you, without having to ask basic details such as what car you have.


Threads with non-compliant titles will be moved to The Pit Lane (in which no replies can be posted, but the OP can edit the thread - upon which the thread will be released to the workshop forum)

Nb. Generic thread titles for truly generic issues that genuinely are not model or variant specific (such as "how do I change the spring in an forge wastegate actuator") are acceptable

**The first 5 posts for new users require individual moderator approval (which they will only get it if they are in line the rules of the forum). Please be patient and allow time for that to happen, and avoid duplicate postings.**



Post new topic Reply to topic  [ 10 posts ] 
Author Message
PostPosted: Wed Aug 14, 2019 9:00 am 
Offline
Saab Nut
User avatar

Joined: Thu Jan 29, 2009 7:02 pm
Posts: 1774
Location: norfolk
Car Model: 9-5 aero/208 gti
Thought I'd ask the hive mind on here

The wife's aero is really in need of a new gearbox, don't fancy the bill for having it re built £750 for just value body up to £2500 for worst case, the cars just used for work & local ish stuff anyhoo, are all the 5 speed auto boxes the same??


Top
 Profile  
 
PostPosted: Thu Aug 15, 2019 9:42 am 
Offline
Saab Nut

Joined: Tue Mar 25, 2014 5:41 pm
Posts: 1244
Location: Kippen STIRLING
Car Model: 9-5 Aero Sportwagen and more
wicker man,

I think the paddle shift came in about '03 so there could be a difference between '02 and '03

Paul @ Kippen


Top
 Profile  
 
PostPosted: Thu Aug 15, 2019 11:52 am 
Offline
Full Pressure Turbo
User avatar

Joined: Wed Jun 21, 2006 3:14 pm
Posts: 642
Location: Chorley, Lancs, UK
Are you getting transmission light & limp mode? Code suggesting sticky solenoids? You should get away with just changing the valve body and transmission ECU.


Top
 Profile  
 
PostPosted: Thu Aug 15, 2019 1:08 pm 
Offline
UKS Addict
User avatar

Joined: Thu Feb 14, 2008 10:47 am
Posts: 6647
Location: Queenborough, Kent
Car Model: 9k, 9-5 Aero & a Jaaag
I believe the issue stems from the design of the valve body - something to do with particles getting stuck between the valves and the valve body, because there is no way for them to escaped - this leads to wear in the piston bores in the valve block. I seem to remember reading that the valve block was redesigned at some point, hence why it's less of an issue on newer cars - so presumably any new replacement valve body will be of the updated design. But as mentioned above - you may need a new transmission ECU and/or wiring harness between that and the valve body, the reason being that as the valves get seized, the ECU raises the pressure to force them to move - hence the thud when the gear is engaged. But apparently this can overdrive the transistors in the ECU meaning that changing just the valve body doesn't fix the issue. Same with the wiring loom too, the excess voltage can supposedly damage that too :wall:

_________________
'98 9000 2.3T CSE, stage 3
'04 9-5 Aero manual, stage 3
'08 Jaguar XFR


Top
 Profile  
 
PostPosted: Thu Aug 15, 2019 1:20 pm 
Offline
UKS Addict

Joined: Tue Feb 10, 2015 8:13 pm
Posts: 2209
Location: Peterborough UK
Car Model: 9-5 Aero 2001,1.9TID x 2
I was lucky and managed to fix my 01 Aero by swapping the solenoids which is not a difficult DIY on the driveway.
I stopped short of opening and cleaning the solenoids or swapping the complete valve body (due to expense).
https://www.youtube.com/watch?v=0nh0rp7HSrw
Really depends how much you want to gamble on fixing the problem.
Any garage will want to either rebuild or swap the complete gearbox for a cost that will likely be more than the car is worth.
https://www.saabcentral.com/forums/show ... p?t=245766


Top
 Profile  
 
PostPosted: Fri Aug 16, 2019 6:27 am 
Offline
Full Pressure Turbo
User avatar

Joined: Sat Oct 03, 2009 3:05 pm
Posts: 664
Location: Crewe, Cheshire
Car Model: 2002 Saab 9-5 Aero Estate
You have not mentioned what the problem is with the gearbox ....

If it's hard-shifting (changes gear with a 'bang') or not changing gear at all then it probably is the solenoids in the valve body.

You also don't mention if you are keen to try fixing it yourself, or are stuck with having it fixed by a gearbox specialist.

I had the hard shift problem on my car (2002 9-5 aero estate) and managed to remove and refurbish the solenoids myself, I also needed to change the transmission ECU (very easy job) with a second hand item.

Biggest problem I encountered was access to the valve body, you need to remove quite a lot of gear at the front of the engine bay to get the required clearance to remove the valve body cover. Next problem is getting the connectors off of the solenoids themselves, you need a 'pick' e.g. a sharp pointed tool to dis-engage the lock on the connector.

This auto gearbox is common to many cars and there are quite a few videos on Youtube which deal with the known solenoid problems. The best one I found was an auto gearbox specialist in the US (link here ... https://www.youtube.com/watch?v=rB5Mw8lGh7A) which showed most of the process of removing and refurbing the solenoids. If I can find the link to my own thread I will add it here.

Found it viewtopic.php?f=2&t=187520

Good luck

_________________
'02' 9-5 Aero wagon
'98' 9-5 SE 2.3LPT
'98' 9000 CSE 2.0LPT
'01' 9-5 2.0L LPT
'97' Merc SL500 (oops)


Top
 Profile  
 
PostPosted: Fri Aug 16, 2019 9:24 am 
Offline
Saab Nut
User avatar

Joined: Thu Jan 29, 2009 7:02 pm
Posts: 1774
Location: norfolk
Car Model: 9-5 aero/208 gti
The cars worth 500 at most but runs & drives decent it's a high mileage poverty spec aero with a banged up passenger door & stinks like potatoes so a maybe £1000+ just to re build the gearbox is a no no

But we want to keep it going as long as we can

The gearbox shifts from r to d when cold with a fud & deffo valve body issues as doesn't like going in or out of second gear & starting to get winey, my gearbox guy has looked at it hence the prices in my first post, £750 to do just the valve body & if it needs other work could be up to £2500 for a full rebuild which just isn't worth it on this car

The plan is to get a used box off one of the saab lot & just swap the hole thing over


Top
 Profile  
 
PostPosted: Fri Aug 16, 2019 12:26 pm 
Offline
Full Pressure Turbo
User avatar

Joined: Wed Jun 21, 2006 3:14 pm
Posts: 642
Location: Chorley, Lancs, UK
If any solenoids are duff, it will almost certainly have fried the transmission ECU.

It's an 8 hour job to replace the transmission. I think the valve body can be replaced a lot quicker, so may be cheaper to just replace that. Whining would suggest some wear to the box itself though.


Top
 Profile  
 
PostPosted: Fri Aug 16, 2019 1:43 pm 
Offline
Saab Nut
User avatar

Joined: Thu Jan 29, 2009 7:02 pm
Posts: 1774
Location: norfolk
Car Model: 9-5 aero/208 gti
Valve body comes out the end of the box so not to bad

Yes going to be a good days work to get the box changed but can't be worse than my pug 306 gti6 clutch change

My labour is free so just need the box

So doing some digging on the net it seems all 5 speeds are the same from what I've been reading


Top
 Profile  
 
PostPosted: Fri Aug 16, 2019 5:44 pm 
Offline
Light Pressure Turbo

Joined: Mon May 05, 2014 5:22 pm
Posts: 393
Location: Lancashire
Car Model: 9-5 Aero
Would it be worth doing a full oil change?

May be too far gone but in comparative costs.......


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 10 posts ] 

All times are UTC


Who is online

Users browsing this forum: Ahrefs [Bot] and 3 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group

follow UKSaabs on Twitter



UKSaabs silhouette logo images by Mark Green www.greenphotos.com
"subsilver2" slightly bodged by UKSaabs for our own use.

:: Disclaimer ::
Comments posted here are the views of their individual authors and are not necessarily shared by the owners of this Web site.
Authors assume all responsibility for comments posted here.

UKSaabs The biggest and best privately owned UK based independent Saab forum for all SAAB enthusiasts.
Whilst we encourage our users to support our advertisers the site wishes to remain independent and therefore does not endorse any particular advertiser(s)
UKSaabs is not affiliated with Saab Cars UK or Saab Automobile AB