Possible catalytic converter problem

DOZER621

MEMBER
2010 DODGE RAM
5.7L
V8
4WD
AUTOMATIC
117,500 MILES

I have an audible rattle from underneath the truck and there is an obvious lack of performance on acceleration. On the highway, to speed up to pass, the engine will surge into a lower gear with just the slightest depression of the gas pedal.

Saturday, November 5th, 2016 AT 10:24 AM

2 Replies

HMAC300

MECHANIC
48,601 POSTS

Scan for codes and check fuel pressure with a gauge, it may be something broke in the converter and causing the noise or the shield around converter has broken from its rivets causing the rattle. see link for fuel pump.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

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Saturday, November 5th, 2016 AT 10:30 AM

RENEE L

ADMIN
1,257 POSTS

Hi DOZER621,

Here is a link to an article that features written step by step instructions and pictures explaining how to do the scan yourself, also I have included a link to our YouTube channel with a how to video on code scanning.

This is applicable even if your check engine light is not on.

Most scanners are inexpensive to purchase, you can purchase one online from sites like Amazon.com

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

https://youtu.be/YV3TRZwer8k

Once you have the codes please get back to us so that we can further assist you. We are always happy to help.

Thank you for visiting 2CarPros.com.

Kindest regards,

Renee
Admin

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Saturday, November 5th, 2016 AT 12:54 PM