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

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

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PostPosted: Sun Sep 17, 2017 4:53 pm 
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Joined: Wed Dec 21, 2016 2:36 pm
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Location: Hampshire
Car Model: 9000 CSE Anni 2.3t
My 9000 2.3 LPT doesn't have an APC valve obviously but I understand they aren't difficult to fit and I do plan on converting it to FPT.
Can I fit an T7 valve or does it need to be a T5? What are the differences?
Thanks


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PostPosted: Sun Sep 17, 2017 5:11 pm 
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Joined: Wed Apr 16, 2014 12:26 pm
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Location: South Oxfordshire
Car Model: 9-3ss Aero 2.0T; VW T5 TDI
They work on a different signal. Jules_ht on here can map the ecu to T7.

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PostPosted: Sun Sep 17, 2017 5:21 pm 
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Joined: Thu Feb 14, 2008 10:47 am
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Location: Queenborough, Kent
Car Model: 9k, 9-5 Aero & a Jaaag
some 9000 LPT's had an APC valve but no intercooler, others were the other way round. Either way, personally I'd ditch the expensive and unreliable T5 one for the much cheaper and simpler T7. You can buy them new for under £30, add £100 to that for a T5 APC valve!

As above - Jules can do the necessary hardware and software changes to the ECU when you send it off for a remap, you'll just then need to modify the wiring loom (T5 APC is 3 wires, T7 is 2). Either make an adaptor lead, or splice a 2 wire one from a T7 into the existing 3 wire setup. I couldn't find a suitable 3-pin socket to connect to the existing plug, so went with the second connector option.

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PostPosted: Sun Sep 17, 2017 6:06 pm 
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Location: Devon
Didge3 wrote:
My 9000 2.3 LPT doesn't have an APC valve obviously

Are you sure it doesn't? Many 2.3 LPTs seem to have the valve, despite appearing not to need it.

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PostPosted: Sun Sep 17, 2017 6:38 pm 
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Joined: Sun Jan 26, 2014 9:41 am
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Location: Royal Tunbridge Wells
Car Model: '03 9-5 2.3 Vector Auto Estate
My '94 LPT 2.0 had the APC but not intercooler (until I fitted one). The '95 LPT 2.3 had the intercooler but no APC. I think they switched on LPT's from having APC but no IC to IC but no APC for '95 MY.

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'03 Saab 9-5 Vector 2.3t Auto Noob Stg 1
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PostPosted: Sun Sep 17, 2017 7:36 pm 
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Joined: Sun Feb 03, 2013 2:38 pm
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Location: Sweden
Car Model: c900
LPT cars with heat plates between the inlet manifold and cylinderhead did get a BPC valve fitted from factory to be able to run slightly higher boost to compensate for the performance loss due to the heat plates.

I would go for a T7 BPC instead of a T5.

T5 valves contains two coils, T7 just one. T5 valves are more common to fail and are expensive as f¤%#¤k (~250 GBP) compared to brand new T7 valves ~40 GBP.

Hardware modifications as well as software modifications is needed. Some soldering inside (de-soldering one pin from the PCB) the ECU and replacing the connector to the valve with the proper one (2 pin connector instead of 3 pin).

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PostPosted: Sun Sep 17, 2017 8:07 pm 
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Joined: Mon Apr 02, 2007 11:52 am
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Location: not in a SAAB.
Car Model: One of the first RHD 9-5s
BillJ wrote:
Didge3 wrote:
My 9000 2.3 LPT doesn't have an APC valve obviously

Are you sure it doesn't? Many 2.3 LPTs seem to have the valve, despite appearing not to need it.


Pre-1995(ish) cars all had APC but the PLT had no IC. After that they all got ICs but the LPT didnt have APC, just relied on the preload on the actuator.

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PostPosted: Sun Sep 17, 2017 8:57 pm 
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The 2.0LPT changed for MY'96 from BPC vlave with no intercooler (up to '95) to no BPC valve and intercooler.
The 2.3LPT always had an intercooler. However, some later 2.3LPTs also had the BPC valve. I didn't know it was anything to do with the heat-plate since I thought only 2.3 FPTs ever got that but it would make sense.

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PostPosted: Sun Sep 17, 2017 10:44 pm 
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Joined: Wed Dec 21, 2016 2:36 pm
Posts: 113
Location: Hampshire
Car Model: 9000 CSE Anni 2.3t
Mine has no APC but does have an intercooler.
Seems the cheaper, much more readily available T7 is the way to go, few on ebay come with the plug + wires so wouldn't be an issue to splice it into my existing wiring.
Cheers guys


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PostPosted: Mon Sep 18, 2017 1:25 pm 
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Joined: Sun Jan 26, 2014 9:41 am
Posts: 1855
Location: Royal Tunbridge Wells
Car Model: '03 9-5 2.3 Vector Auto Estate
But remember the ECU needs modification as above.

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'03 Saab 9-5 Vector 2.3t Auto Noob Stg 1
'01 Saab 9-3 2.0t SE Convertible
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PostPosted: Mon Sep 18, 2017 6:16 pm 
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Joined: Sun Oct 15, 2006 7:02 pm
Posts: 6527
Location: Reading, Saabshire
Car Model: Merc A200d AMG 7sp DCT
T5 Suite manual.
Page 162 shows you how to wire the T7 valve up.
http://www.rossonex.com/SAAB/Trionic_5.pdf

As mentioned, you need the ECU re-worked to suit.
Jules_HT is the man for this. And can all be done via the post.

Best way is to buy a Trionic 5 ECU off ebay (Anyone will do), and Jules can make it suit what ever you like.
Might as well get a little power boost while you are at it. A completely stock 9000 2.3T with a T25 turbo should be good for a very easy 240bhp.
Bit better than your current 170bhp !.

PS:
This is the cheapest ECU i could find on ebay.
http://www.ebay.co.uk/itm/SAAB-T5-ENGIN ... SwT-FZCeDj

Might be worth going through the For Sale section on here, and checking for 9000's being broken up.

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PostPosted: Tue Sep 19, 2017 11:13 pm 
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Joined: Wed Dec 21, 2016 2:36 pm
Posts: 113
Location: Hampshire
Car Model: 9000 CSE Anni 2.3t
Yes I hadn't forgotten about the ECU don't worry! I was just asking because its something I plan to do fairly soon and I was worried looking at the prices of T5 APC valves!

I didn't know any T5 ECU could be used however, I thought it'd have to be the same year/OBD 2 (like mine is) for it to work so that's useful.


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PostPosted: Wed Sep 20, 2017 1:09 pm 
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Joined: Sun Oct 15, 2006 7:02 pm
Posts: 6527
Location: Reading, Saabshire
Car Model: Merc A200d AMG 7sp DCT
Didge3 wrote:
Yes I hadn't forgotten about the ECU don't worry! I was just asking because its something I plan to do fairly soon and I was worried looking at the prices of T5 APC valves!

I didn't know any T5 ECU could be used however, I thought it'd have to be the same year/OBD 2 (like mine is) for it to work so that's useful.


Ah actually i was a bit to generic with that reply.
You want an ECU from 1995 onwards which is Trionic 5.5
1993/94 Cars have Trionic 5.2

Also, T5.5 ECU's from 1996 onwards were upgraded to a 20Mhz CPU from a 16Mhz CPU. Yes wow....
This was said to help with the processing for OBDII software.

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PostPosted: Thu Oct 05, 2017 3:33 pm 
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Joined: Wed Dec 21, 2016 2:36 pm
Posts: 113
Location: Hampshire
Car Model: 9000 CSE Anni 2.3t
I've got my T7 APC and modified ECU is in the post on its way. For now how can I test I've swapped the connector over properly? I've checked the fuse for the APC is present and un-broken but is there a way I can test it's wired properly?


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PostPosted: Thu Oct 05, 2017 5:02 pm 
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Joined: Sun Oct 15, 2006 7:02 pm
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Location: Reading, Saabshire
Car Model: Merc A200d AMG 7sp DCT
No, not until you get the modified ECU in the post.

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92 9000 CSE 2.0t. aka, Wassabi II
02 Laguna II 3.0 V6 24v


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PostPosted: Thu Oct 05, 2017 5:15 pm 
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Joined: Wed Dec 21, 2016 2:36 pm
Posts: 113
Location: Hampshire
Car Model: 9000 CSE Anni 2.3t
Paul Taylor wrote:
No, not until you get the modified ECU in the post.

Ah well, I guess its only 2 wires, if it doesn't do anything I can just swap them over... :idea:


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