Question about 1999 Saab 9-5

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2003 saab 93 idles rough & stalls

Code manfacturer controll fuel air metering. Any help.

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  • justin Jensen
    justin Jensen Sep 25, 2009

    yes it is a P1251

  • justin Jensen
    justin Jensen Sep 25, 2009

    I cleared the code with a scanner and reset the throttle linkage. But now I drove it and as soon as I push the throttle all the way to the floor driving it the eng light comes on. It does not seem to stall now. any ideas.

  • justin Jensen
    justin Jensen Sep 25, 2009

    2003 saab 93

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Hi,

Despite what untrained auto parts store employees might want you to believe, fault codes NEVER indicate that specific parts have failed; they only indicate which system or circuit is behaving abnormally to give a point to begin diagnostic testing of the vehicle.

There is no component called a fuel air metering control; the code you might have indicates that there is a problem affecting the ability of your car's engine control system to control fuel mixture (fuel/air metering is a fancy way of saying fuel mixture).

There are literally dozens of possible causes for different codes; to find the actual cause of the problem is going to require some special test equipment to be able to follow the manufacturer's specific test sequence for this code.

If you have the specific code number, let me know so that i could help you further.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Sep 25, 2009

  • taran_2005
    taran_2005 Sep 25, 2009

    Thanks for your response!!

    P1251
    Throttle Motor. Full PWM in Closing Direction.


    NOTE: May set if Mechanism is not Restarted.

    Fault symptoms


    • CHECK ENGINE.

    • Incorrect idle speed.

    • Cruise control inoperative.
    On-Board Diagnostics
    Type of diagnosis:



    • Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle.
    Enable criteria:


    • Test 1: Engine running. Car in motion.

    • Test 2: Engine running for less than 5 S.
    Fault criteria:


    • Test 1 and Test 2: Throttle motor receiving 100% PWM in closing direction.
    Dependents:


    • None.
    System reaction to a fault:


    • Throttle
      control goes into limp-home mode. The limp-home solenoid will be
      activated 5 times in succession each time the ignition is turned on
      until the fault has been rectified and the trouble codes cleared.
    OK report:

    Accelerator Pedal has been depressed at some time and then fully released. 120 S has expired since then without fault criteria being fulfilled.

    Fault handling: See "Fault diagnosis, general" for more information.


    • CHECK ENGINE goes on immediately and can be turned off only by clearing the trouble codes.
    Diagnostic help
    A mechanical fault is preventing the throttle from closing.

    Check the wiring
    Jiggle
    the leads and in-line connectors at various points and in different
    directions to detect any intermittent breaks or short circuit in the
    wiring. Observe the multimeter, test lamp or diagnostic tool while
    doing this.

    For more ,

    The throttle body would be a good place to start the diagnosis.

    First,
    check the vaccum hose connected to the throttle body. If this hose is
    damaged, it can cause a surge.
    Since you seem to notice the
    problem more when turning, look for excessive engine play, this stress
    could cause a hose to become damaged.


    This throttle body can be reset. Before you replace the throttle try this:

    1.
    The codes must be cancelled with an OBDII or Saab equivalent scanner.
    Turn off the ignition switch and wait 10 seconds before resetting the
    throttle linkage. Road test.

    2. Reset the throttle by removing
    the cover from the throttle linkage on the passenger side of the
    throttle body. Look at the throttle body from the passenger side of the
    car, with eyes at fender height. See an approximately 5 mm length of a
    straight wire protruding straight downward from the bottom of the limp
    home solenoid housing on the rear of the throttle body.

    3. Use
    the left forefinger to gently push the protruding end of this wire
    toward the driver's side of the car about 3-5 mm. Hold the wire in this
    position.

    4. Gently rotate the black plastic toothed cam, on the
    passenger side of the throttle body, in a counter-clockwise direction.
    Will hear a slight ratcheting sound and a "snap" when the cam has
    reached the reset position.

    5. Release the wire with the left finger.

    6. Test drive.

    Trouble Code — P1251 is usually set with another code. If it is the
    only code set, clear the code, reset the throttle linkage and test
    drive for more symptoms.
    Some common related codes:
    p1260
    p1231
    p1250
    p1264

    Hope i helped you.

    Thanks for using ' Fixya ' and have a nice day!!



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