I drive a 97 sunfire GT (2.4L of course) 
Well the car has been running  rough on and off lately so I borrows my buddy's code reader. What I got was 
 
"Manifold Absolute Pressure/BARO Sensor Low Input" 
 
The car tends to idle rough for a while then its ok after a while... so my question is how do I fix this? 
I searched but didn't find enough info on it so please help!! im racing in a week!! 
 
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Nevermind, I changed the vac line, it didnt look too nice not it runs good again.
sorry about the useless post
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