2003 Kia Sorento engine performance

2003 KIA SORENTO
24,600 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
ALEXPUNISHER
  • MEMBER
  • 1 POST
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.
May 19, 2009 at 4:12 PM
Advertisement
Avatar
JACOBANDNICKOLAS
  • CAR REPAIR CONTRIBUTOR
  • 110,190 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.
Oct 13, 2009 at 10:36 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.