1997 Ford Aerostar Vans Check Engine Light Throwing Out P0171 Code Ive Already

1997 FORD AEROSTAR
79,000 MILES
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DANNYRIDER
  • MEMBER
  • 2 POSTS
my vans check engine light is and it throwing out p0171 code ive already cleaned the mass air flow sensor, what else could it be?
Nov 21, 2012 at 1:18 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
cleaning the mass air flow does nothing

could be low fuel pressure, vacuum leak, pcv or bad mass air flow

Roy
Nov 21, 2012 at 3:50 AM
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