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2007 silverado 5.3 V8 idles rough no codes,

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Old July 11th, 2011, 10:13 AM
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Default 2007 silverado 5.3 V8 idles rough no codes,
The truck has been taken to the dealer ship and scanned and nothing shows up,they want to tear down the engine to take a look at it,it does have 130000 mi.s on the Odometer, coil packs have been changed ,as well as the spark plugs, this truck was purchased at a Auto Auction as is, so the history is unknown
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Old July 12th, 2011, 6:55 PM
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have you tried and engine treatments? what about seafoaming it??? what happenes???
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Old July 13th, 2011, 8:11 AM
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No ,but i'll try it
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Old July 16th, 2011, 4:12 PM
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What RPM does it idle?
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Old July 16th, 2011, 5:30 PM
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Does that truck have a throttle body? If so, it could need a good cleaning or maybe be a problem with the Mass Airflow Sensor.
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