Volvo S80 A performance sedan that offers top notch luxury, outstanding handling and so much more.

Computer Code

  #1  
Old 06-28-2009, 01:51 PM
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Default Computer Code

I have a 2001 S80 2.9..... The "Engine System Service Required" light with no apparent change in performance. It only comes on when the car is warm. I reset the computer and I get a code of "44" and "66". The dealer won't tell me what it means unless I bring it in an open my wallet. The only other thing I can add is the car has a small lull in power at cruising speed of 50mph. It is like "bounce" of the RPMs. I accelerate beyond that speed and it stops. Other than that the S80 runs awesome and smooth. I just had new tires installed....drives like a dream. Any diagnostic help would be appreciated!!

Thanks,
Brad
 
  #2  
Old 06-28-2009, 10:01 PM
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You need to read the codes through the ODBII plug.
 
  #3  
Old 06-29-2009, 09:57 AM
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Default RPM Lull

Thanks for getting back to me....any idea about the RPM Lull. Ever heard of that???

Thanks!!!
 
  #4  
Old 06-29-2009, 10:03 AM
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It could be that the car goes into a "limp home" mode where it "protects itself" by not allowing you to accelerate above a certain point. Think of it as a governor of some kind. Only problem is, depending on how the car feels that day, it could be 50mph, 35mph, or even 15mph like I am experiencing recently in my car.

Unfortunately, you'll probably need to take it into a dealer to have the codes pulled and analyzed for you. While an OBDII code reader can be helpful, it doesn't necessarily pull all of the codes from the system.
 
  #5  
Old 06-30-2009, 08:17 PM
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Yes you need to have the codes read to see if that is causing the problem.
 
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