akbar wrote:
> OBD II P0109
>
> Fault Code Definition
> The Manifold Absolute Pressure Sensor/Barometric Pressure Sensor measures
> the rise and fall of the air pressure inside the Intake Manifold. This
> provides critical data needed for the Power Train Control Module (PCM) to
> control the Air Fuel Ratio, the Ignition Spark Timing, and many components
> of the Emissions Control Systems. The Manifold Absolute Pressure/Barometric
> Pressure Sensor converts the Intake Manifold air pressure into a voltage
> that is high when the Intake Manifold air pressure is high and low when the
> Intake Manifold air pressure drops to a vacuum. The P0109 code indicates an
> intermittent or erratic voltage signal from the MAP to the PCM.
>
> Symptoms
>
> * Check Engine Light will illuminate
> * In many cases, no abnormal symptoms may be noticed
> * In some cases, the engine may be hard starting and/or get poor fuel
> economy
> * In some cases, noticeably poor engine performance may occur
>
> Common Problems That Trigger the P0109 Code
>
> * Manifold Absolute Pressure Sensor/Barometric Pressure Sensor is
> defective
> * Intake Manifold vacuum leaks
> * Faulty or corroded Manifold Absolute Pressure Sensor/Barometric
> Pressure wiring or connections
>
> Common Misdiagnoses
>
> * Manifold Absolute Pressure Sensor/Barometric Pressure Sensor is
> replaced when the real cause is a vacuum leak
> * MAP Sensor is replaced when the real issue is a problematic EGR Valve
> * Manifold Absolute Pressure Sensor/Barometric Pressure Sensor is
> replaced when the real problem is a defective Idle Air Control Motor, which
> causes a very low engine idle
>
>
>
>
>
>
>
>
> OBD II Code P0171 and P0174
>
> Fuel System Too Lean (Bank 1 or 2)
>
> Our emissions expert has put together the following information about the
> P0171 and P0174 fault code. We have also included diagnostic procedures you
> can take to your repair shop if the mechanic is having difficulty analyzing
> the code.
>
> OBD II Fault Code
>
> * OBD II P0171
> * OBD II P0174
>
> Fault Code Definition
>
> * OBD II P0171 Fuel System Too Lean (Bank 1)
> * OBD II P0174 Fuel System Too Lean (Bank 2)
>
> Symptoms
>
> * Check Engine Light will illuminate
> * In some cases, no adverse conditions may be noticed by the driver
> * In other cases, there may be performance problems, such as a lack of
> power on acceleration and some "coughing" or misfiring
> * The vehicle may have trouble idling, especially when warm or when
> sitting at a stoplight
>
> Common Problems That Trigger the P0171 and P0174 Code
>
> * PCM software needs to be updated
> * Vacuum leaks (Intake Manifold Gaskets, vacuum hoses, PCV hoses, etc.)
> * Mass Airflow Sensor (MAF)
> * Plugged Fuel Filter or weak Fuel Pump
> * Plugged or dirty Fuel Injectors
>
> Common Misdiagnosis
>
> * Oxygen Sensors
never thanked you so thank you.
need some more advise pls.
what car batter should i be going for that is zero maintenance and has long life?