After it started to rattle, I had one of the catalytic converters replaced on my '05 Grand Marquis. Since then, I suspect that the engine is running more smoothly, and also seems to have more pep.
Am I imagining this, or can replacing a catcon make a noticable difference in power?
"freemont" wrote
My T-Bird also made a slightly irritating rattling noise. Turns out the substrate had come loose in the pre-cat, and the exhaust pulses had bounced it around so much that little pieces of it had broken off and made their way to the main cat, while the disintegrating pre-cat slowly turned itself sideways inside the pipe until it was almost completely blocking the exhaust flow from the left side of the engine. Some new cats turned the chuff-chuff-chuff back to a vroooom.
In 2004, I "rodded" the catcon on an '82 Dodge with Slant Six and after venting some smelly gasses it ran a lot better. I did it with a piece of 1" square tubing (sharpened the edges) and retrieved some of the ceramic honeycomb material from the center. The stuf was mostly clogged...
Pete
Have something to add? Share your thoughts — no account required.
Ask the community — no account required