# 2008 Saturn Astra, Manual, RPM Sag/Stutter at idle after warm-up

**URL:** <https://community.cartalk.com/t/2008-saturn-astra-manual-rpm-sag-stutter-at-idle-after-warm-up/52896>\
**Category:** Maintenance/Repairs\
**Tags:** astra, saturn\
**Created:** [August 3, 2010, 12:13am UTC](https://community.cartalk.com/t/2008-saturn-astra-manual-rpm-sag-stutter-at-idle-after-warm-up/52896 "2010-08-03T00:13:43Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![drew.card](https://avatars.discourse-cdn.com/v4/letter/d/a6a055/32.png) [@drew.card](https://community.cartalk.com/u/drew.card)\
**Post date:** [August 3, 2010, 12:13am UTC](https://community.cartalk.com/t/2008-saturn-astra-manual-rpm-sag-stutter-at-idle-after-warm-up/52896/1 "2010-08-03T00:13:43Z")

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Greetings,  
  
  
  
 I have an '08 Saturn Astra (manual transmission) currently ~50k though issue noted ~20k.  
  
  
  
 I have an issue I’d like help with.  
  
  
  
 I’ve noticed this perhaps once a month now - typically after getting off the freeway and coming to a stop at a light I will idle at about ~900-750 (normal) - then for a second or so it will drop to ~500 and stutter - and recover fine, I don’t even have time to goose the peddle if I wanted to. Once it occurred while I was idling in my driveway - slight uphill incline - and it actually stalled.  
  
  
  
 I can only confirm it happening when the car is stopped.  
  
  
  
 I am not positive but I think this may happen while I am moving as well - but it is so brief - but I have glanced and seen rpm come back to about idle.  
  
  
  
 This has occurred and without the A/C engaged.  
  
  
  
 Engine light has not been on other than to prompt the replacement of the Cam Position Sensor in the middle of this period.  
  
  
  
 When there was a dealer to take it to they had no input as there was nothing additional to work with diagnostically (they said).  
  
  
  
 Ideas?