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Unstable idle rpm, A6, 3.2AUK engine, quattro,2005


Old 08-25-2014, 11:35 AM
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Default Unstable idle rpm, A6, 3.2AUK engine, quattro,2005

Unstable idle rpm, when engine temperature exceeds 75 Celsius degree

there are no DTC errors
But that was tested and did not help
1) cleaned throttle body
2) replaced throttle body
3) adapted throttle body
4) Replace the valve (Pressure Control Valve (PCV) http://www.ecstuning.com/Audi-C6_A6-...ake/ES2535189/
5) Replaced for testing MAP sensor (http://www.ecstuning.com/Audi-C6_A6-...ake/ES2678229/)
6) VCDS told me that i have small amount of misfires (3-5) does this affect?

After this rpms, 5-10 min later, engine is turning with increased speed but stable,Instead of 650 jumps to 900

Drops are seen while driving, but no actual feeling. For instance on same turning, it jumps from 1500 to 1400 and then goes back again

unstable rpm 3.2

Please help
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