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Many reasons.... One, some catalytic conv have porcelain inside that brakes in pieces and makes malfunction such is block it. Two, some others have fiber glass which "melts" and once again...blocked. and another reason i can give you is the driving habits you may have sometimes driving slow is not the best for your car, take it out to ride on highway once in a while, gets rid of the "soot" inside, specially if you don't use premium gas. hope i helped....ABGDA
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∙ 16y ago
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What causes 1999 Crown Vic catalytic converter to stop uses a?
Gets clogged
What causes a catalytic converter to turn red in a 1990 Seville?
Partially clogged or engine misfire.
When is it time to change your catalyst converter?
A Catalytic Converter can fail if it becomes clogged or poisoned but there is no way of knowing when it is clogged. Replace your Catalytic Converter when it starts to malfunction.
Can a catalytic converter be clogged up?
The answer is yes, it can.
Can you unclog an catalytic converter?
No, if it is clogged it must be replaced.
What causes Loss of power on a 2001 Volvo V 70 car?
Many things but you might start with a clogged catalytic converter.
Can a catalytic converter make your car cut out?
Yes, it most certainly can if the converter is clogged.
Can you drive 3 hours with your catalytic converter clogged?
It is not advisable.
Can a muffler get clogged by a bad catalytic converter?
Yes it is possible.
How do you fix clogged catalytic converter on 1999 catera?
Replace it
How does a catalytic converter go bad?
They can become clogged or they can burn out.
Can a clogged catalytic converter make your transmission not shift?
Yes
