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Idle Hunt / Surge at cold start

  • 1988
  • 911 Carrera Targa
Mileage: 
165 000
Engine
Lake tapps, 
Washington

Hi there....I have a new to me 88 3.2L that is has a idle surge at cold start.   

I've reaserched and see its an issue others have had...some for years.   and the resolution seems to be many possibilities. 

My question is how critical is it that i get it corrected?   

The hunting idle is between 1100 and 900 rpm for a few minutes and then settles to the appropriate range approx 900    

The car smells a little rich at times but other than that runs fantastic...so not sure if I should mess with it or not

Thanks for your input!!

 

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