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RPMs dropping hard accleration

greg0078
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greg0078 Member

greg0078

Posted
Posted (edited)

I noticed this week that under hard acceleration 4th and 5th gear when i get to 5000 rpm it drops down to 4000 rpm, and then climbs, when i shift to 5th same thing hit 5000 drops to 4000.  

 

2001 carrera 996

 

Ideas/thoughts?

 

 

Edited by greg0078
DBJoe996 Member

DBJoe996

Posted
Posted

Have you tried an e-gas calibration?  Turn on ignition to ON (not start).  Wait 60 seconds.  You should hear some whirring noise from the engine bay as the Throttle Body runs through a calibration cycle.  Turn ignition off, then start as normal.

 

The second thing that comes to mind is the change over in the resonance flap.

 

resonance flap operating parameters.JPG

resonance flap.JPG

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