Trouble idle

Tiny
BILL ELLIS
  • MEMBER
  • 2004 VOLVO XC90
  • 5 CYL
  • AUTOMATIC
  • 105,000 MILES
The auto parts store says gasoline burning too rich in #1? But couldn't say how to repair
Wednesday, December 29th, 2010 AT 7:50 PM

1 Reply

Tiny
JIS001
  • MECHANIC
  • 3,411 POSTS
Fuel trim code? Check for intake leaks. You may need to smoke the intake to see if there are any leaks. If that is ok, check for a plugged up PCV system. You would need a special gage you insert in the oil dipstick tube to check for pcv vacuum. If there is no vacuum or there is positive pressure, clean the pcv system out and the throttle body. Also after repairs, make sure you reset the fuel trim adaptations or the light will come back on.
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Sunday, January 2nd, 2011 AT 9:54 PM

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