hi guys ,
i got code P0107 absolute manifold pressure ??? on a 2000 Monte Carlo ss ..... it idles rough but drives fine on acceleration??

anyone have this problem or know how to fix it or what to look at??

any help would help thanks ,

 

Check out the below Infor: Good Luck


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Manifold Absolute Pressure/Barometric Pressure Circuit Low Input

Our emissions expert has put together the following information about the P0107 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 P0107

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. A P0107 code indicates a low voltage input from the Manifold Absolute Pressure Sensor/Barometric Pressure Sensor to the PCM.

Symptoms

• Check Engine Light will illuminate
• 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 P0107 Code

• Manifold Absolute Pressure Sensor/Barometric Pressure Sensor is defective
• Faulty or corroded Manifold Absolute Pressure Sensor/Barometric Pressure wiring or connections

Common Misdiagnosis

• Manifold Absolute Pressure Sensor/Barometric Pressure Sensor is replaced when the real cause is a short in the MAP Sensor wiring

 

Kidspace gave you a great place to start, I would also check for vacuum leaks. A rough idle usually indicates a vacuum leak, especially when its fine at higher RPM's but a faulty map sensor/circuit will also give the same symptoms of a vacuum leak

 

..Thanks LabNjab, for all your posts helping member's...
It is noticed & appreciated 4-Sure....
MCF = Member's Helping Member's : )

 

Thanks guys!!!
Kidspace for replying quick......

I did repair a vac leak on the egr pipe going into the plenum back to the egr valve .....but still get the code...... Can't seam to find any other leaks.....

Ill replace the sensor on the top of the plenium and give you an update .....thanks so much ....

Glad to join this forum