2g mas

[william spear]

Car starts right up and about 20 seconds later starts stumbling like its trying to die or not getting gas. It idle surges till warm then stops surging. Exaust sounds like it is missing. After its warm I plugged the palm in and my fuel trim is at 0. If I unplug the mas car idles smooth like its not missing any more but it will not rev up. Could this be a bad mas not reading the air correctly to the ecu. My tps is at 1%. Have spark and good fuel pressure.

 

[chase1244]

it really sounds like it is a bad mas to me.

 

[william spear]

Found my problem.It was the no 4 pin wire to my mas that has no voltage. Now I have to change my mfi fuses or relay to fix my problem.