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Posted on May 05, 2017
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I've gutted all my catalytic converters and car still wont accelerate smoothly or go over 80 mph

The dealership told me it was a clogged Bank one cat and I had it gutted, my car doesn't allow me to go over 80 mph unless its cold/winter but everytime it warms up, my engine light comes on and car wont accelerate pass 80 mph, it gets up to 80 mph and the the injectors shut off and the speed needle has to go back to 60 mph before i can resume driving/accelerating, it does this faithfully, so now im goint to change my speed sensor and clean my mass air flow sensor, I've already gutted and cut off all my catalytic converters

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Bill Boyd

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  • Nissan Master 53,816 Answers
  • Posted on May 05, 2017
Bill Boyd
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Gutting the cat converters was not a smart thing to do
the ECM needs feed back from the sensors to regulate the air/fuel mixture and now you expect it to do the job with half the sensors removed
like trying to brush your teeth with no hands
replace the cat converters with new ones then run the fault codes to really find the problem area

1 Related Answer

mc1bean

Mike Cairns

  • 3054 Answers
  • Posted on Jun 10, 2011

SOURCE: Hi..Im driving a Nissan Presea

I too be live first thing to check oxygen sensor, possibly fuel filter . Hope this helps some.

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It sounds like you catalytic converter is clogged. You can get a universal replacement cat from Jeg's for $50.
If it is a clogged cat, it will be getting really hot.
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