po171 po 174 codes 1998 mercury grand marqius 4.6?

  • Thread starter Thread starter Blue
  • Start date Start date
B

Blue

Guest
keep getting thr samee code all the time had it at the dealer when it died they said mass airflow sensor got a rebuilr car ran good but the next day same codes back . changed both 02sensor same thing happens .any clues?
 
Back
Top