2002 Ford F 150 Getting Several Codes P0171 P0174 P0303 P0316 Trying Figure

2002 FORD F-150
150,000 MILES
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CALEBWAGNER
  • MEMBER
  • 1 POST
I am getting several codes, P0171,P0174,P0303, and P0316. I am trying to figure out if the cylinder misfire is causing the system too lean errors, or if the system too lean condition is causing the misfire.
Dec 22, 2012 at 11:30 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
check the pcv hose at the back of the throttle body

303 missfire number 3, 316 is missfire under 1000rpm on cylinder 6.

my thought are a bad intake manifold. it leaks coolant into the boots, gaskets leak causing lean codes.

Roy
Dec 22, 2012 at 11:54 AM
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