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Sportstrac is running too lean

Tiny
REYQUEEN
  • MEMBER
  • 2002 FORD EXPLORER
  • 250,000 MILES
Truck would not stay running. Thought is was the fuel pump - replaced fuel pump but still would not stay running and died at start up. Placed on diagnostics and it first indicated master air flow problem then it finally read cataylic converters bad. Replaced cataylic converters but now truck is running too lean and stalls or dies when you first take off.
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Wednesday, December 14th, 2011 AT 1:08 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Lean fuel condition could be caused by one of the following below:

1. Vacuum leaks

2. EGR and PCV valve.

3. Inadequate fuel pressure.

4. Dirty fuel injectors.

5. MAF Sensor.

6. Oxygen Sensor.
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Wednesday, December 14th, 2011 AT 2:31 AM

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