Bout catalytic converter being clogged

Asked by Feb 07, 2014 at 02:24 AM about the 2005 Ford Five Hundred SEL

Question type: Maintenance & Repair

Hi, my name is dee i own a 2005 ford 500 sel and i have changed the intake manifold the throttle body and the car has low idle and low acceleration sumone told me that it could be a clogged cat, or fuel filter i need a answer and mine has like a 2 piece cat one piece comes from the engine and runs to the cat then to the exhaust would i have to change the whole thing or the rear cat

4 Answers


Ok. First of all, take it to someone that knows how to properly diagnose your car. Guessing only gets expensive. In most states, you cannot buy just one catalytic converter nor can you buy a used one. Count on a $600 to $1000 guess here. A real tech would hook up a scan tool, read and interpret the MAF, hook up a vacuum gauge, test the exhaust back-pressure and test the fuel pressure - and do it all within the 1 hour diagnostic time. No guess work involved.

1 of 1 people found this helpful.

Had to replace my Intake Manifold because of Clogged Cat. Clogged Cat used the EGR as exhaust and burned two holes in the old Manifold.


Bober1949 This happened to me currently. Did you replace the cat's or bypass my Ford has 3 of them?? WTH

2 of 2 people found this helpful.

Any info? Can you remove cat's? I have a new manifold to install want to know if cats can be bypassed.

1 of 1 people found this helpful.

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