1997 Lincoln Town Car code 174

Tiny
MIKE NILES
  • MEMBER
  • 1997 LINCOLN TOWN CAR
  • V8
  • 2WD
  • AUTOMATIC
  • 115,000 MILES
I have a code 174 and ta spark knock at hjgh RPM's. What are some things I should check?
Wednesday, March 31st, 2010 AT 7:58 PM

1 Reply

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
DTC P0174 : Fuel Deliver System : Air/Fuel ratio is correcting rich for an overly lean condition

Possible causes are:

EGR system faulty
air intake or vacuum system leak
engine oil leveltoo high
excessive internal engine wear
fuel system malfunction

first to test would be the oxygen sensor(s), they are the easiest and cheapest to replace if needed.
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Wednesday, March 31st, 2010 AT 8:14 PM

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