2002 Land Rover Freelander got lean code, dealer says repla

Tiny
POLARFOIL
  • MEMBER
  • 2002 LAND ROVER FREELANDER
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 98,000 MILES
My Service Engine Soon lamp was on and I needed a regularly scheduled service visit anyway so I paid them the outrageous $120 extra to diagnose. They said it was a "lean code" indicating a leaky manifold and the manifold would need to be replaced, estimated at $1500 for the job. Is this realistic? Should I get a second opinion (possibly for another $100 engine diagnostic fee)? Could it just be a loose bolt or old gasket?
Monday, January 5th, 2009 AT 4:42 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Get a 2nd opinion

A lean fuel condition can be caused by:

* Low fuel pressure due to a weak pump or leaky fuel pressure regulator. (Use a fuel pressure gauge to check fuel pressure at idle)

* Dirty fuel injectors. (Try cleaning the injectors)

* Vacuum leaks at the intake manifold, vacuum hose connections or throttle body. (Use a vacuum gauge to check for low intake vacuum)

* Leaky EGR valve. (Check operation of EGR valve)

* Leaky PCV Valve or hose. (Check valve and hose connections)

* Dirty or defective Mass Airflow Sensor (MAF). (Try cleaning the MAF sensor wires or filament with aerosol electronics cleaner. Do NOT use anything else to clean the sensor, and do not touch the sensor wires)
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Monday, January 5th, 2009 AT 4:51 PM

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