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Thread: An interesting note on AFM upgradeability.

  1. #1
    Join Date
    Jul 2004
    Posts
    778

    Default An interesting note on AFM upgradeability.

    Volkswagen Vanagon used the Bosch Fuel Injection with the familiar looking AFM. At the address given below, an interesting modification is introduced for the AFM to fix the following symptoms.

    This fix adds a capacitor into the AFM circuit, that acts to even out the current which can be helpful in cases of deformed resistor track incapable of providing a continuous signal...

    CONDITION
    After driving for 1/2 to 2 hours at a constant speed, vehicle
    experiences lack of power, cuts-out or stalls, often accompanied by
    bucking or jerking of the vehicle.
    In ALL cases, the vehicle will restart immediately. This symptom may
    not re-occur for several weeks/months. Inspection by the dealer results
    in nothing conclusive.

    Address :

    AFM capacitor fix

    add a $0.5 25 V 10 uF tantal capacitor with its +side connected to pin 4 and its common to pin 2 (who is the air flow voltage output) to stabilise the voltage.
    Ten + Microfarad + Tantalum

    Please, save this page on your computer, as these resources are surely getting to extinction.
    Last edited by Rustam; 06-29-2013 at 10:44 PM.

    deleted air conditioning

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