SPONSORED LINKS

Hearing a knock around 2,500 RPM under a light load

Tiny
LAWRENCE LUBASH
  • MEMBER
  • 2008 PONTIAC G5
  • 2.2L
  • 4 CYL
  • 2WD
  • MANUAL
  • 80,000 MILES
Goes away after a few hundred more rpm's. Does not knock under heavy load. I feel no vibration. There is no loss of power. The only code it throws is a P0411 Secondary air valve stuck. Any possible causes?
Wednesday, September 18th, 2019 AT 9:00 AM

1 Reply

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

In the diagrams down below I have included the vehicle manufacturers diagnostic troubleshooting guide for DTC P0411 for your vehicle. Please go through this guide and get back to us with what you are able to find out.

Thanks,
Alex
2CarPros
Images (Click to make bigger)
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Wednesday, September 18th, 2019 AT 3:03 PM

Please login or register to post a reply.

Related Noise Knock Content

Sponsored links