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Random Multiple Misfire, Fuel Trim System Too Lean, Cylinder 5 & 6 Misfire

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Random Multiple Misfire, Fuel Trim System Too Lean, Cylinder 5 & 6 Misfire

  #1  
Old 06-22-2014, 01:20 PM
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Default Random Multiple Misfire, Fuel Trim System Too Lean, Cylinder 5 & 6 Misfire

When I try to crank the car it will take long or will not crank until I try it again. It works sometimes when I tap the gas pedal a few times. I get a reduced engine performance if it takes long to start up. These are the only major problems I have with the car. 138,000 miles on it. Volvo S80 2002 2.9L
 
  #2  
Old 02-28-2016, 11:15 AM
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Default did you get it fixed ?

Originally Posted by divinedavis View Post
When I try to crank the car it will take long or will not crank until I try it again. It works sometimes when I tap the gas pedal a few times. I get a reduced engine performance if it takes long to start up. These are the only major problems I have with the car. 138,000 miles on it. Volvo S80 2002 2.9L
I'm having the same codes but I have the twin turbo and it takes a long time to start . I have drained my battery attempting to start it sometimes. Would love to know if you got it fix before I drop mine to Volvo
 
  #3  
Old 02-28-2016, 11:33 AM
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Default

to the forum jaydownsouth

Have you tried to swap coils from 5&6 with any of the other four to see if the misfire moves ??
Have you inspected the plugs and if so how did they look ??
Any chance you have something causing a vac leak to those cylinders ??
 
  #4  
Old 02-28-2016, 06:33 PM
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Default Tried it

Originally Posted by Kiss4aFrog View Post
to the forum jaydownsouth

Have you tried to swap coils from 5&6 with any of the other four to see if the misfire moves ??
Have you inspected the plugs and if so how did they look ??
Any chance you have something causing a vac leak to those cylinders ??
I purchased all new plugs and coils. I even pulled the fuel rail and turned the key to make sure the fuel injected were spraying fuel cause I knew it couldn't be the coil or plug. I'm sure it's a vacuum leak somewhere but that won't explain the hard start. This is the first Volvo I have worked on and owned
 
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