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18 Posts
Hi guys. I have a 2005 300C and I'm to the point where i'm very uncomfortable with driving it. My 300 is very sluggish at times. I have to press a little harder than usual on the accelerator to get her to go and then I have to mash down a little further to get her to get up in speed. It's very annoying and it scares me. Sometimes I feel as if it's going to stop right on the highway. Also, I had my check engine light come on in December. I got it checked out and it came back P0430 Catalyst Efficiency and P0300 Misfire. I figured that the misfire was causing catalytic converter problems so I got the spark plugs changed and codes erased. Light came back on earlier this month, but it only came back with P0430. I know at this point I will need a new catalytic converter.
Do any of you have any recommendations as far as aftermarket cats? Should I get my oxygen sensor checked to see if that may be causing the code? Also, do any of you think that my cat going bad correlates to the car running sluggish and running like it's losing power?
Another thing. The ride is rough! I don't know if it's the shocks/struts/sway bars or anything that assists with the drivetrain and its parts. I don't know what it could be either. I don't have people I can ask and mechanics here aren't helpful in the semi rural area I live in.
Please help out the little baby girl (me) lol. Any and all help is appreciated.
Do any of you have any recommendations as far as aftermarket cats? Should I get my oxygen sensor checked to see if that may be causing the code? Also, do any of you think that my cat going bad correlates to the car running sluggish and running like it's losing power?
Another thing. The ride is rough! I don't know if it's the shocks/struts/sway bars or anything that assists with the drivetrain and its parts. I don't know what it could be either. I don't have people I can ask and mechanics here aren't helpful in the semi rural area I live in.
Please help out the little baby girl (me) lol. Any and all help is appreciated.