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When you put a new thread up in the Workshop please put your car's year and model in the post subject/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.

For Tech II issues or help requests please state the following in your title ''Tech 2 help required - state issue and your location ''.


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, note compliant threads will be moved back when the mod/admin team next visit the Pit Lane. if your thread has been sat in the Pit Lane for 24hrs+ after editing, pm Tech II to request release)

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.**



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PostPosted: Fri Jun 12, 2020 7:08 pm 
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Joined: Wed Feb 18, 2015 7:46 pm
Posts: 117
Car Models: Saab 9-5 Aero
Have been looking around and videos/posts seems to indicate a blown turbo. When I start the car from cold or been left for several hours. I get a plume of bluish whitish smoke which goes away after 10-20 seconds. When car is up to temperature this is no issue what so ever. Same with hot starts when car has been left for a couple of hours. Car is on 150k on what looks like original turbo. I had it Noobed last year so might have just tipped it over the edge ;). Have a Mellet core sitting in the garage ready. Just wanted opinions before i got tearing out the turbo when I might have to do even more!

I have uploaded a video. Please ignore the fingers!

https://youtu.be/VZ_cOc1aqFE

Compression tested the engine and was 180 ish PSI which is strong. My old 3SGTE manages 150 tops :P Also tried some forte seal conditioner for the valve stem seals and that did nothing either.


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PostPosted: Fri Jun 12, 2020 8:50 pm 
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Saab Nut
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Joined: Tue Sep 10, 2019 11:14 pm
Posts: 1185
Location: N Yorks
Car Models: 9-5 Aero Estates, 9-5 2.2 TiD estate, 9-5 2.0 Saloon, 9000 Aero
What's the mileage of the engine and turbo ?

When turbo seals have gone there can be continuous smoke, I have seen two like that, With those symptoms I would be suspecting valve stem oil seals. (Forte stuff is generally good).


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PostPosted: Sat Oct 03, 2020 7:04 am 
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Joined: Wed Feb 18, 2015 7:46 pm
Posts: 117
Car Models: Saab 9-5 Aero
Just an update if anyone else has similar symptoms.

I replaced the turbo cartridge but still had the same issues on cold start. I thought valve stem seals but then during normal running I would have no issue and even if left sat idle for ten minutes a blip of the throttle brought no smoke.

One thing I did notice was as my oil went down on the dip stick the problem went away. Topped up last week and the problem instantly came back. This then led me to the PCV system as I had a theory that the system was broken somewhere and during cold start was drawing up oil from the sump return and depositing it into the intake. Being an 04 car meant it had the final system. The new one I got must of been a further revision as it was all plastic pipes and the non return valve going to the throttle body is now metal.

Took the car for a blast and so far fingers crossed the problem has now been fixed. Hopefully my oil usage will be reduced as well :)

Cars on 153K. I can now get started on that suspension refresh I was planning for.


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PostPosted: Sat Oct 10, 2020 7:55 pm 
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Joined: Wed Nov 13, 2013 11:28 pm
Posts: 179
Car Models: 89 900 t16s type 8s
good work and info Adam, I love a Fixed post, sadly few and far between.


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PostPosted: Sun Oct 11, 2020 7:22 am 
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Joined: Wed Feb 18, 2015 7:46 pm
Posts: 117
Car Models: Saab 9-5 Aero
rpd900t16s wrote:
good work and info Adam, I love a Fixed post, sadly few and far between.


Thank you and still all good. Was my last attempt before I decided to throw in the towel. Since she's been good I have treated her to this. :)

Image

Car feels like a surgeons knife compared to how it was before :)


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