Q: What cause a catilac converter in 2009 nessain murnao go bad

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What cause a catalic converter go bad in a 2009 nessian murano
My car has a manual transmission.

There can be a few different reasons for a catalytic converter to fail. Your engine running too rich or lean or coolant in exhaust from a blown head gasket can cause failure. Also a defective converter that breaks apart and blocks the exhaust can cause blockage and loss of power and catalyst failure.

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