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1997 - 2003 Ford F150 General discussion on the Ford 1997 - 2003 F150 truck.

p0171,p0174 lean codes. help me!!!!!

 
Old 03-06-2011, 02:30 AM
  #11  
HarrisRacing17
 
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i was geting the lean codes weekly in my truck with the stock filterbox and k&n replacment filter. and the truck seemed to stutter horribly. i think it was my Mass airflow sensor acting up causing the lean codes aswell. and it hasnt busted a code on me since i put my col air intake on and it runs alot smoother and peppier
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Old 03-06-2011, 02:52 PM
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Mass air flow sensor will definitely shoot those codes. Take off. Spray good with brake cleaner. Let dry. Like new
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Old 03-07-2011, 01:49 AM
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You are not suppose to use brakleen on electronic sensors. Use the CRC Electronic cleaner. Brakleen has chlorine in the red cans, and the green has a chemical that melts a lot of plastics. I use the heck out of Brakleen for most everything except any sensor who sniffs. I personally don't use the green brakleen (05088) and use the red (05089). Luckily I don't have a licensed shop or I couldn't use the red. I'd be stuck with the green junk.

Last edited by akdoggie; 03-07-2011 at 01:54 AM.
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