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Hello, I am brand new to this forum.
I just bought a '92 Saab 9000 2.3 16v Turbo 5D, 5 Speed Manual. My trouble is that the TCS light is always on and the car has almost no power. The throttle pedal is stiff to press and the boost gauge only moves slightly, it also idles roughly when the AUTO button is on and smoothes out when I use the ECONO or OFF possitions. I know that it is in serious need of repair. I have been given advice to replace a certain part by a parts manager (via phone). I would like some usable advice from anyone that has run into this situation and can suggest any advice on how to track the culprit part ('part's) down. (I just ordered a repair manual for this hard to find 9000 model and don't have it yet)
I also own an 84 900 sedan (non-Turbo) and really like both cars.
PS. I am not driving my 9000 until I can am sure that I am not harming it any further...
 

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The car is in "limp mode " and this is why it is pretty dreadfull to drive
the throttle is connected to the butterfly by a cable rather than "fly by wire "
This is designed to get you to a dealer
It also disables a lot of the other systems too
like the a/c
There are many things it could be and it is impossible to diagnose remotely
you need to get to a dealer /specialist who can interogate the ecu for the fault codes
It could be simple eg a wheel sensor
or it could be expensive tcs/abs master system
you will not know til you get it checked...

good luck !!
 

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Does the light come on at startup and stay on? If so you need a dealer with the older ISAT diagnosis system.
If not then check all the vacuum lines, especially the ones from the engine mount end of the inlet manifold to the valve on the bulkhead and from the valve to the throttle body.
Check and clean the valve with some carburettor cleaner and unplug and plug the connector.
Unplug and replug the connector on the throttle body too. (Be careful with it and it is allowed to move slightly with the plug on the body.)

You could try looking at www.townsendimports.com for some TCS fault checks which will say whether it is the throttle body. I think you can reset the computer by leaving the battery disconnected for a couple of hours. Don't count on it though.

Don't buy anything until you have tried all the above and possibly seen a dealer with the car.

Townsend Imports is a good start for official Saab documentation on this.

Hope this helps.

Duncan
 
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