2000 LEXUS RX 300

  • Tiny
  • GodBlessUSA
  • 2000 Lexus RX 300

Engine Performance problem
2000 Lexus RX 300 6 cyl

When I accelerate, the engine makes a rattling noise. Also, it feels like the engine is " hesitating" to accelerate, as though it has lost some of its power. I'm fairly certain something is wrong with it, I'm just not sure what.

Thursday, August 12th, 2010 AT 10:52 AM

3 Answers

  • Tiny
  • rasmataz
  • Member

Lack of acceleration, chugging, hesitating, bogging, misfiring etc. Could be caused by one of the following 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.

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Friday, August 13th, 2010 AT 12:23 AM
  • Tiny
  • GodBlessUSA
  • Member

Could you tell me some ways in which I could check some of the problems you mentioned? Or how to better understand what my engine is doing so I can eliminate some of the choices? Thanks!

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Friday, August 13th, 2010 AT 10:36 AM
  • Tiny
  • rasmataz
  • Member

Could be pinging/detonating -Sounds like the knock sensor is not retarding the ignition timing, an EGR valve that's not opening or the engine is overheating/clogged catalytic converter

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Friday, August 13th, 2010 AT 5:58 PM

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