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2003 Kia Sorento engine performance

Tiny
ALEXPUNISHER
  • MEMBER
  • 2003 KIA SORENTO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 24,600 MILES
Trouble code P0431. Warm Up Catalyst Efficiency Below Threshold Bank 2. When my suv accelerates I have a whistling sound. I have poor acceleration at 2,500 RPM.
Tuesday, May 19th, 2009 AT 4:12 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
If you hear a whisteling sound and have low power with that code, chances are the converter is plugged on that side. You need to have it checked for backpressure.

Let me know what you find.
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Tuesday, October 13th, 2009 AT 10:36 AM

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