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Impala While undergoing many facelifts in its history, the Impala has proved itself to both civilians and police forces as one of the most capable 4-door cars GM has ever offered. Currently moving towards its 10th generation the Impala is one of the longest lasting and popular models.

2014 Chevrolet Impala
Includes: Bel-air
Platform: B-body & W-body

High Idle

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Old August 4th, 2013, 5:59 PM
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Default High Idle
2003 chevy impala 3.4 has a high idle. put a new Idle air control valve in and a new tps in still having same problem can not find a vacuum leak, first start car it idles fine then will idle way up and stay up there for just a few sec and then come back down to a idle. Then way back up again.... anybody got any ideas??
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