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No, there are many other parts on the engine that can affect mileage but the catalytic converter is a passive device and, if new and clean, cannot affect the way the engine runs or the mileage it gets.
Think of it as a filter, althought it's actually a lot more complex than that, if it lets the exhaust gases flow throught without any major obstruction then it can have no effect on the car's performance.
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∙ 11y ago
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Will a bad catalytic converter cause hard starting?
Yes it will, plus loss of power, & poor mileage.
What happen if the catalytic converter is plug?
Loose of power, hard starting, poor fuel mileage, and the converter will get red hot.
Can a bad or clogged catalytic converter make your car not go?
A clogged converter will cause an extreme loss in power, poor mileage, and hard starting. If it is clogged really, really, bad it may cause the engine to not even start.
What are some symptoms if your catalytic converter goes bad?
Hard starting, loss of power, poor fuel mileage are symptoms of a clogged converter.
What are the symptoms of a bad catalytic converter in a Nissan Maxima?
Hard starting, loss of power, poor fuel mileage.
How do you know the catalytic converter is going bad on a Nissan Maxima?
Hard starting, loss of power, & poor fuel mileage.
How do you know the catalytic converter is bad on an 1997 oldsmobile 88?
Hard starting, loss of power, poor fuel mileage.
Will a bad catalytic converter make your car run ruff?
It most certainly will. A clogged converter will cause a loss of power, poor fuel mileage, and overall poor engine performance. It is illegal to remove it without replacing it with another one. Besides, modern vehicle will not run correctly with the converter removed.
How do you tell if your catalytic converter went bad?
Loss of power, poor fuel mileage, converter gets red hot, possibly check engine light will come on.
How do you know if the catalytic converter is clogged?
Loss of power, poor fuel mileage, hard starting, and the converter will get red hot. Normally the check engine light will also come on.
What are some symptems of a bad catalytic converter?
Loss of power, poor fuel mileage, hard starting, a blowing sound under acceleration.
What are some sypmtons of a bad catalytic converter on a 2005 Nissan Maxima se?
Loss of power, hard to start, and poor fuel mileage.
