1995 Mercury Mystique automobile bucks

1995 MERCURY MYSTIQUE
103,000 MILES • 6 CYL • 2WD • AUTOMATIC
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ALPHIE CANJURA
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  • 1 POST
1995 Mercury Mystique, 103,000.

While driving on the freeway, the car occassionally begins to buck as if being bumped from behind, the tachometer goes crazy and the car begins to lose power.

What do you think is the problem?
Jun 18, 2010 at 7:05 PM
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RASMATAZ
  • CERTIFIED EXPERT
  • 75,992 POSTS
Inspect and test all the following listed below:

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,fuel filter 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.
Jun 18, 2010 at 8:00 PM