4.6L General DiscussionThis section is for non-tech specific information pertaining to 4.6L (Modular) Mustangs built from 1996 to 2004.
Welcome to Mustang Forums!
Welcome to Mustang Forums.
You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!
Just recently purchased a used '05 GT 4.6 w/manual shift, having occasional missfire issues, took it to a local ford dealer for a computer check. Along with a couple of other issues that were found as to why this GT sat on a car lot for so long I was told that the CATs had been blown out. Question is to some of you that have been around, " are catalytic converters even necessary or should I replace them ". Running MSD coil packes and violator exhaust system.
This ad is not displayed to registered or logged-in members. Register your free account today and become a member on Mustang Forums!
Also keep in mind the warranty for cats is federally regulated for 80,000 miles. So you have low miles ford has to fix that mess.
Not if someone deliberately beat out the cores.
One other comment though, in most states it is illegal for a licensed dealer (new or used) to sell a vehicle that has defective emission control components. Unless it was sold "as-is" the dealer has to either fix it or take it back...
This forum is owned and operated by Internet Brands, Inc., a Delaware
corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford
Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor