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What are the symptoms of a plugged Catalytic Converter on a tbi engine? I got a bad loss of power when I'm accelerating past 20mph. Sometimes I can't accelerate past 20mph but the rpms will rise up.
 

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A cat clog will make the car sluggish. The RPMs will not increase past a certain point.

If the RPMs increase, and the car does not go, it is probably the transmission.
 

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Discussion Starter #3
Ah man. I feared that just because some days it would do over 20 and some days it won't.
 
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