1999 Ford Explorer Engine Shaking

1999 FORD EXPLORER
135,000 MILES • 6 CYL • 2WD • AUTOMATIC
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KCV
  • MEMBER
  • 1 POST
My have check engine light on and the error code
P0171 and P0174 2 weeks ago. The SUV still run normal

Yesterday, it become shaking and lost and lost power then the check engine light blinking and smelling gas from exhaust smooke. Scan the code again. I got P0171 and P0174 and P0306

I brought to the shop they said MIGHT be the issue with intake manifold and they want $500. Is that reasonable? Any other possible cause the problem? What I should check?
Feb 4, 2010 at 9:56 PM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
PO171 PO174 Lean bank 1&2. Chances are you have a vacuum leak. It could be the intake, but check everything before ripping into the intake.
Feb 5, 2010 at 8:18 AM
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