Question about 2003 Saab 9-3

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My saab 9-3 2003 Turbo does not charge the battery (it reads 11.3V when the engine is running and if I disconnect any of the two wires to the battery the engine dies), but the battery dies after a few hours and I need to charge it with my charger. No battery light or message on SID indicates that the battery is not charging or any other malfunction. Any ideas what is going on? Why this car does not have a battery charge light like all other cars? And if it has it, where is it? Thanks, -Cdl

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  • Cdl Test Dec 12, 2012

    Thanks. I'm 99% sure that there is something wrong with the alternator or its regulator, however, my main concern is why I'm not getting any warning from the system for the malfunction.



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The Superior Voltage warning is the Voltmeter. You normally have 13.2 to 13.6 Volts as the stand alone Voltage. Charging can reach a maximum of about 14.2 Volts. When you have less than 12 Volt you have a problem.

If you are at idle, with many things turned on, you can fall to an 11 something Voltage but it should quickly climb as RPM increases.

Your Regulator is not allowing the Alternator to work or the Alternator is just not putting out. Most newer Alternators have a built-in regulator. Most are not serviceable. The output can be checked on the car, usually free, at Autozone, Advance, or Oreilys.

Posted on Dec 11, 2012


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SOURCE: Check engine light on 1999 Saab 9-5 Turbo

typical computerised car!
im going back to the good old ways!
Now back to yours lol
get it scanned & reset
Cheers rob.

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SOURCE: 1998 Saab 900SE Turbo - Engine Sputtering

There are a couple of reasons why you are experiencing these concerns. The following are examples of what can be wrong or malfunctioning with your Saab. First check the idle air control valve. This valve controls the amount of air being distributed to your Intake manifold by bypassing the throttle body. This valve is controlled by the computer, make sure the wiring is ok and connected correctly. If you wish to clean the valve you can but make sure you use a carb cleaner or equivalent and remove all the debris and chemical. Secondly the fuel pump.

The fuel pump is hard to diagnose because it can lead you around other concerns like the ignition system. One way to check the fuel pump is to use a test light on the fuel pump circuit. On the 900se it should be fuse #37(not absolutely positive) while the car is running you can check the fuse. If there is power in the circuit and the engine wants to die out check the wiring for the fuel pump all the way to the tank. If there is no continuity than repair the wire that is damaged there should be continuity on all the wires. If all checks out ok but it keeps failing change the fuel pump. If you find that the fuse blown on the fuel pump circuit check the wiring if it is ok change the pump.

There are many things to check on your saab hopefully you find this helpful.

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SOURCE: Saab 93 1.9 tid warning

The easiest way to check is with the car running, disconnect the positve side of the battery, if the car dies, then it is the altenator, if the car keeps running then it is the battery. If you have a volt ohm meter, check the chrge going to the battery you should get between 12 and 14 volts if it is lower than 12 you have an altenator issue. the altenator should always produce enough to charge the battery and run the car at the same time, if not then the battery wears down.

Posted on Mar 13, 2011

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The APC valve regulates boost pressure (via the wastegate) to avoid over-pressurising the engine. It ensures that a safe boost pressure isn't exceeded. Don't run with it disconnected or you risk blowing the engine!

Problem areas can include: knock sensor on the engine block (also poor quality fuel, dirty engine causing knock); engine ECU.

You need to provide more information about when this happens:

hard accelerating? (likely poor quality fuel, dirty plugs/engine causing knock) and general driving similar.

idling? possibly a knock sensor or ECU related problem

What rpm? what boost gauge pressure?

as an outside chance, maybe a sticky wastegate


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