2001 SIVERADO 5.3 CODE PO101 PO135 PO300

  • Tiny
  • Tuckerfarms
  • 2001 CHEVROLET SILVERADO
  • 13,000 MILES

Just started running rough and engine is pinging
code po101 po 135 po300

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Thursday, January 26th, 2012 AT 9:44 PM

2 Replies

  • Tiny
  • Rasmataz
  • MEMBER

Sounds like a lean fuel condition-Check this components

1. Vacuum leaks

2. EGR and PCV valve.

3. Low fuel pressure.

4. Dirty fuel injectors.

5. Mass Air Flow Sensor.

6. Oxygen Sensor.

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Thursday, January 26th, 2012 AT 11:59 PM
  • Tiny
  • Rivermikerat
  • MEMBER

P0101: MAF sensor performance: Remove and clean. Carefully. Don't touch the sensor with your fingers. Use a towel or clean rag.
P0135: Heated O2 Sensor circuit, low voltage, Bank 1 sensor 1: Check the wiring and connection to this O2 sensor.
P0300: Engine misfire detected: Pull and replace plugs one by one to see which one causes the engine to run better. Determine problem. Check to ensure injector is pulsing. Make sure there is spark to the plug. Make sure the plug isn't overly worn, corroded, or contaminated with oil or carbon build up. Check compression.

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Friday, January 27th, 2012 AT 12:06 AM

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