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Check Engine Light

Old Oct 17, 2008 | 11:51 AM
  #1  
Cobra93svt's Avatar
Cobra93svt
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Check Engine Light

Had a check engine light on the other day and read the codes. The sode read "Lean Bank 1"
What does that mean?
I just got gas the other day and put in Lucas Fuel treatment. I used it once before a long tow and got an extra 2 mpg.
Could that be the problem?
My truck is a 1997 Expedition 4WD 5.4
Thanks for the help
 
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Old Oct 22, 2008 | 08:57 PM
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Lean Bank 1

Bank 1 is the engine side with #1 cylinder, so bank 1 is passenger side. Possible vacuum leak. Check your PCV valve
 
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Old Oct 23, 2008 | 07:24 AM
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I'm checking the PVC lines this weekend with a mechanic friend of mine. I did put some Lucas Fuel Treatment in the tank and then the light appeared. I have since gone thru that tank of gas and the light has not come on since I reset it on Saturday. Could that have been the cause?I also detailed the Expedition on Sunday nad washed the motor and still the light did not come back on.
 
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