1997 Ford Explorer #1 and #4 misfire and engine running lea

Tiny
CWOOTEN
  • MEMBER
  • 1997 FORD EXPLORER
Engine Performance problem
1997 Ford Explorer 6 cyl Four Wheel Drive Automatic

This is what the code scanner at the local auto parts store showed as the engine codes. Since we had the codes read we have replaced the coil pack mass air flow sensor plugs and wires. The truck still has the same issues with all these changes. What can I check or do next.
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Saturday, September 4th, 2010 AT 10:05 AM

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Tiny
WRENCHTECH
  • EXPERT
With the lean codes, your not looking for an ignition problem, nor are you looking for something that controls the entire engine. You looking for something isolated to the area that your having a problem. Since these are both front cylinders, look for a vacuum leak toward the front of the engine. You could also be looking a low fuel pressure or dirty injectors since both injectors are at the end of the fuel rail.
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Saturday, September 4th, 2010 AT 10:17 AM

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