I cut off the catalytic converters on my 2001 Navigator and i can still see daylight through them. How do you know if you need new ones? I also changed all the coils and plugs but still losing lots of power on the slightest incline and check engine light flashes like crazy

Asked by migration_Markuss7 Mar 10, 2013 at 05:19 PM about the 2001 Lincoln Navigator 4WD

Question type: Maintenance & Repair

How do you know if the catalytic converters need to be replaced

6 Answers

How do you know if they are plugged up after you remove them because i already removed mine and i can still see through them

3 people found this helpful.

well, 'plugged up' refers to impeding the flow- It's not a muffler, just a chamber for an electrochemical reaction to occur. put it back on and take it to an emissions evaluation machine, like the kind at your smog inspection station-

1 people found this helpful.

pretty hard for a person to take in carbon monoxide and turn it into carbon dioxide. That's why we need these things, so you cannot commit suicide with your exhaust as easily.

1 people found this helpful.

well the active material has apparently been burned away...perhaps by too rich or too lean a fuel mixture-

1 people found this helpful.

I can remember a Camaro came into the shop, was running like hell, and I looked underneath and the catalytic converter was cherry red! Good thing the driver did not park on some leaves-

1 people found this helpful.

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