Did you mean to post that in your other thread?


https://dodgeforum.com/forum/dodge-c...er-tuneup.html

 

Having this issue again but now with a lot of lost power and gas mileage down atleast 5mpg. Light was on for EGR so had replaced but before replacing EGR it was running around town good but on the highway it had no power going up hills. After changing EGR it still has the power problem but also runs bad in town with 2-300 rpm flucuations. Also changed plug wires. Code now only reads catalyst insufficiency.

 

Should I change any of the O2 sensors when I replace the converter.

 

Had the converter and O2 sensor changed on the converter and increased gas mileage immediatly by 5mpg and runs like new.