2002 Mercury Sable slight loss of power

2002 MERCURY SABLE
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BOBONE53
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Engine Performance problem
2002 Mercury Sable 6 cyl Automatic 110000 miles

while driving (highway), engine seems to lag a bit at any constint speed.
May 26, 2010 at 3:23 PM
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RASMATAZ
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 75,992 POSTS
Inspect and test all the following listed below and get back with some results

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard.
May 26, 2010 at 5:51 PM