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PostPosted: Sun Sep 16, 2018 9:51 am 
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Joined: Tue Feb 14, 2017 11:54 am
Posts: 105
Location: Horsham, West Sussex
Car Model: '07 Saab 9-5 Aero
2 weeks ago the car was getting too hot so we replaced the thermostat and temp sensor, so that was fixed.
However, after a test drive it wouldn't restart when hot! So I tried again later and it was fine cold. No codes or engine light so we replaced the crank sensor.
However, on the next test drive it starts misfiring really badly when coming onto boost and the engine light was actually flashing. Pulled the codes, P1300.

So I have just changed the plugs and DIC and now there is no engine light or misfire, but the car has no power and isn't smooth when on boost.
When off boost it seems fine and responsive and revs nicely and responsively for a 2.3 engine, so seems ok to me.
I checked using my OBD reader and definitely no codes and the car starts from hot ok.
The boost gauge goes right up nicely, but the power isn't there and you can feel it's not smooth.

This is one of the old plugs, I think it looks ok?
Image

Could it be fuel pump? The filter was recently changed and there is plenty of fuel in the car.
It's just getting silly with the problems on this car now, please help :(

Dave


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PostPosted: Sun Sep 16, 2018 10:03 am 
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Talking Turkey
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Joined: Mon Apr 02, 2007 11:52 am
Posts: 23244
Location: not in a SAAB.
Car Model: One of the first RHD 9-5s
P1300 is multiple cyclinder misfire. My money would be on a split hose to/from the IC or the end tank on the IC itself beginning to seperate.

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05 9-5 Aero with all the options.


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PostPosted: Sun Sep 16, 2018 10:06 am 
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Joined: Tue Feb 14, 2017 11:54 am
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Location: Horsham, West Sussex
Car Model: '07 Saab 9-5 Aero
9000Parts wrote:
P1300 is multiple cyclinder misfire. My money would be on a split hose to/from the IC or the end tank on the IC itself beginning to seperate.


Interesting, I shall go and have a look thanks.


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PostPosted: Sun Sep 16, 2018 11:22 am 
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Joined: Tue Feb 14, 2017 11:54 am
Posts: 105
Location: Horsham, West Sussex
Car Model: '07 Saab 9-5 Aero
Can't see any splits, although it's not easy to see the hoses and I am out of time.
However, my mechanic did replace one of the jubliee clips and the new one doesn't seem to go particularly tight. Might need a better one...


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PostPosted: Sun Sep 16, 2018 12:00 pm 
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Talking Turkey
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Joined: Mon Apr 02, 2007 11:52 am
Posts: 23244
Location: not in a SAAB.
Car Model: One of the first RHD 9-5s
Drive with the windows open and listen for it whistling when on boost. If it does then you definitily have a leak somewhere. The turbo to IC one splits but its almost impossible to see and inspect without removing. The IC to delivery pipe one splits where it gets really close to the exhaust as well. However, even a loose jubilee clamp is enough to make a bit of a leak but at some point that hose will pop off.

Could even be one of the vac hoses has fallen off or fallen apart somewhere.

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05 9-5 Aero with all the options.


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PostPosted: Sun Sep 16, 2018 4:21 pm 
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Joined: Tue Feb 14, 2017 11:54 am
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Location: Horsham, West Sussex
Car Model: '07 Saab 9-5 Aero
Can't hear anything out of the usual, but I will remove and check the IC pipes and get a better juliee clamp too. Thanks for the help, I'll report back soon! :)


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PostPosted: Mon Sep 17, 2018 8:28 am 
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Location: Saabworld - where everything smells of thinners
Car Model: 9-5 - The dark dame
The not starting when hot issue could be CPS which if it's failing could also cause random misfires and lack of boost due to the ECU not getting a decent RPM reference signal, but if you've had the thermostat off then did you clean and properly tighten the small black earth wire that's bolted to it? If not then that alone would cause the lack of boost because it's a sensor earth.

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PostPosted: Mon Sep 17, 2018 3:55 pm 
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Joined: Tue Feb 14, 2017 11:54 am
Posts: 105
Location: Horsham, West Sussex
Car Model: '07 Saab 9-5 Aero
We did replace the CPS. I'll check that earth too. Strangely, I did have some trouble starting from cold this morning. It turned over but didn't start, so I tried again with some throttle and it started up.


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PostPosted: Tue Sep 18, 2018 12:55 pm 
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UKS Addict
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Joined: Thu Feb 14, 2008 10:47 am
Posts: 6262
Location: Queenborough, Kent
Car Model: 9k, 9-5 Aero & a Jaaag
The issue referenced above by SaabNoob is one I experienced, in my case it looked OK - it was only when I physically undid the connection (to replace the wiring loom) that I found it had a partially stripped thread. Meaning that it made contact when the engine was cold, but once warm gave an intermittent connection - leading to many (false) knock counts and this makes the ECU rein in the boost ...

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'04 9-5 Aero manual, stage 3
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PostPosted: Tue Sep 18, 2018 1:07 pm 
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Saab Nut
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Joined: Tue Mar 04, 2014 11:41 am
Posts: 1013
Location: Hants
Car Model: 9-5 Aero Wagon
I can't see anywhere that says you've reset the ECU? I.E. pulled the fuse / disconnected the battery.
If you previously had an issue, you'll want to clear whatever it might have adapted to... I doubt it's going to solve your problem, but worth doing anyway.

Beyond that, definitely check your vac hoses as recommended above already.

Threads like this make me realise how much I'll miss open SID when I inevitably get a new car! It might seem like a strange time to be considering a remap, but the added diagnostic capability makes it worthwhile for that alone IMO...


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PostPosted: Tue Sep 18, 2018 4:17 pm 
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Joined: Tue Feb 14, 2017 11:54 am
Posts: 105
Location: Horsham, West Sussex
Car Model: '07 Saab 9-5 Aero
OK I think I will check the thermostat earth then, thanks chaps.

OK I shall reset the ECU too, what is the fuse labeled as exactly? Thanks mate.
I will check the vac hoses first, hopefully feeling better tomorrow so I can crack on!


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PostPosted: Tue Sep 18, 2018 6:10 pm 
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Shotgun
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Joined: Tue Aug 08, 2006 8:51 pm
Posts: 11424
Location: 'Ull
Car Model: 95 Aero Auto Est Stg 1 Noobed
Fuse 17.

You'll need to go through the procedure to "open" the SID to enable "E - N - S" mode again, but that's no major effort.

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PostPosted: Wed Sep 19, 2018 10:41 pm 
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Saab Nut
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Joined: Sat Jan 18, 2014 3:23 pm
Posts: 1457
Location: Sussex
Car Model: '04 9-5 Aero est., '97 9K Aero
Do all versions of openSID have this E/N/S choice? And what’s the abbreviation for the knock counts that I keep reading about but have never found on mine?

Thanks - cardboardcutout


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PostPosted: Thu Sep 20, 2018 4:37 am 
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Joined: Sat Jun 02, 2012 9:25 pm
Posts: 4900
Location: Ingleby barwick, cleveland
Car Model: 2000 9-3 viggen convertible.
Only if it has disp in open sid and it’s set to 1.

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PostPosted: Thu Sep 20, 2018 8:29 am 
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Joined: Tue Feb 14, 2017 11:54 am
Posts: 105
Location: Horsham, West Sussex
Car Model: '07 Saab 9-5 Aero
Shalien wrote:
You'll need to go through the procedure to "open" the SID to enable "E - N - S" mode again, but that's no major effort.


Sorry I have no idea what that means, is there a guide on this somewhere?


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PostPosted: Thu Sep 20, 2018 8:51 am 
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Joined: Mon Jul 06, 2009 12:54 pm
Posts: 6360
Location: Saabworld - where everything smells of thinners
Car Model: 9-5 - The dark dame
cardboardcutout wrote:
Do all versions of openSID have this E/N/S choice? And what’s the abbreviation for the knock counts that I keep reading about but have never found on mine?

Thanks - cardboardcutout

Most of my maps have the option to enable the extra E/N/S mode which is done by setting the DISP value to 1. The individual cylinder knock counts and misfire counts are below DISP in mode 6 on yours (and most others if they have modes available), abbreviated as Knk1...Knk4 and Mis1....Mis4.

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saabnoobtune@gmail.com
Now with added Tech2


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PostPosted: Thu Sep 20, 2018 9:13 am 
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Joined: Tue Feb 14, 2017 11:54 am
Posts: 105
Location: Horsham, West Sussex
Car Model: '07 Saab 9-5 Aero
Thanks mate


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PostPosted: Thu Sep 20, 2018 9:24 pm 
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Joined: Sat Jan 18, 2014 3:23 pm
Posts: 1457
Location: Sussex
Car Model: '04 9-5 Aero est., '97 9K Aero
Thanks I’ll look for that tomorrow

cc


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PostPosted: Thu Sep 20, 2018 9:46 pm 
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Shotgun
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Joined: Tue Aug 08, 2006 8:51 pm
Posts: 11424
Location: 'Ull
Car Model: 95 Aero Auto Est Stg 1 Noobed
A couple of handy documents..


Enabling E/N/S Mode (and a description of what that means) [Thanks to our very own SaabNoob]
Attachment:
Open SID and Performance mode selection.pdf [17.6 KiB]
Downloaded 32 times



And, what the OpenSID values mean (although I'm still none the wiser after 4 years :loco: :wall: )
Attachment:
Open SID Values.pdf [666.47 KiB]
Downloaded 31 times

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den bara markerar sitt territorium


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PostPosted: Fri Sep 21, 2018 6:03 am 
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Joined: Fri Mar 09, 2018 9:53 am
Posts: 902
Car Model: .
Shalien wrote:


And, what the OpenSID values mean (although I'm still none the wiser after 4 years :loco: :wall: )
Attachment:
Open SID Values.pdf


you and me both :D not a clue


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