2008 sounds like a loud 454 motor for approx 3 mins

2008 DODGE DURANGO
116,000 MILES
Avatar
JSCIBOR
  • MEMBER
  • 1 POST
I startes the durango yesterday and it sounded like a 454 with no headers on it once warmes up it stopped at about 2-3 mins then runs fine the CEL came on today with code p0174 can any one help with why its making the sound
Jun 14, 2013 at 9:35 AM
Advertisement
Avatar
ERNEST CLARK
  • ✓ASE Certified Mechanic
  • 1,730 POSTS
  • ASE Certified Mechanic
P0174 means the o2 sensor is telling the computer that it's reading a lean-fuel condition in "Bank-2" of the exhaust system. Because you say your exhaust was loud, that sounds like you have an exhaust leak that's allowing air into the system up-stream of the sensor. This could be from a cracked exhaust manifold/pipe//converter, or a bolt has come loose.

It shouldn't be too hard to locate the leak. Good luck, and if you need help making a fix when you do, feel free to write back.
Jun 14, 2013 at 2:42 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
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.