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

2004 impala ls has a mystery problem

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Old April 4th, 2015, 12:35 PM
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Default 2004 impala ls has a mystery problem

My impala has 105,000 miles on it. Back in December my rpms started to bounce. And the car idles bad. It drives great. The car shakes really bad in idle and acts like it wants to die. Cylinder 3 is misfiring.

Replaced the plugs, the plug cables, valve spring, the fuel injector. The battery is clean, I am coming up on an oil change but thats not the problem.

Im putting too much money in with no results.
Old April 7th, 2015, 11:27 AM
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Did you get it scanned for any codes?
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