1995 Volvo 940

Engine Performance problem
1995 Volvo 940 Two Wheel Drive Automatic 205000 miles

my car lost power for 15 to 20 seconds while going 55 mph. Did it 3 times. Each time tach goes flat then car comes back on. Didnt have to touch anything it just came alive again. Confused.
Tom j
July 15, 2010.

Possibilities: Inspect and test all the following listed below: Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock 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 it.

Jul 16, 2010.