Question about 1999 Saab 9-5

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1999 saab wont stay running while idling

1999 saab stalling when idling but will run as long as you step on gas sort of like a standard check engine light came on and oil was low but i added some

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I had a similar problem with my Saab, stalled at red lights when idling,

As suggested by Greg I suspected the IAC and was just about going to the repair shop and have the ECU codes pulled.

Anyway, I decided it could be a good idea to check the engine air filter first. It turned out to be rather dirty so I changed it, This solved the problem in my case, the car has worked perfectly ever since.

Sometimes it can be very simple!


Posted on May 23, 2009

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It could 1 of 2 things:

  1. IAC (Idle Air Control valve)
  2. TPS (Throttle Position Sensor)
Have a diagnostic test done on the car. Most auto parts chains (Autozone) will run a test free of charge. The results will point you in the right direction. You can always post back for instructions on how to change the IAC or the TPS. This should solve your stalling issue. All the best!
Greg

Posted on May 16, 2009

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1 Answer

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1 Answer

Wont stay running


You may have a defective idle speed control valve. Clean it first.

Here is the most common cause of surges and stalls, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

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idle air control is jammed close little sensor on top of air intake gently tap it or clean throttle body with air intake cleaner hope it help fixya our post thanks pierre

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