1999 buick regal

1999 BUICK REGAL
150,000 MILES • 6 CYL • 2WD • AUTOMATIC
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JRSONS1
  • MEMBER
  • 2 POSTS
why do I loose power on accelleration?
Jan 1, 2011 at 11:39 AM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
How long since a tune-up? Any trouble codes? Use a gage and check fuel pressure.
Jan 1, 2011 at 11:41 AM
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JRSONS1
  • MEMBER
  • 2 POSTS
just bought vehicle. no service engine light on.
Jan 1, 2011 at 11:47 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Check the engine compression if okay-Possibilities long list but worth to try: Check and test

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 and keep testing



Jan 1, 2011 at 12:34 PM
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