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Fuel/air mixture too rich, engine misfire, or damage.
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∙ 12y ago
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Can a bad catalytic converter damage the ignition coils or a bad ignition coil can cause to catalytic to go bad on a ford expedition?
A bad coil can damage a converter. If the engine is misfiring, it will cause raw fuel to get into the converter and that can cause failure.
Can a bad catalytic converter cause hard starts?
A bad catalytic converter can cause hard starts if it has become clogged. This produces excessive back pressure in the engine.
Can a catalytic converter cause the EGR valve to go bad?
No, the catalytic converter is downstream from the EGR valve so it has no effect on it.
Will a bad catalytic converter cause decreased gas mileage?
It could, yes.
How do you know catalytic converter is bad?
A bad catalytic converter will cause a severely restricted exhaust system. You would notice a lack of power and performance from you vehicle and in cases of a completely blocked converter, the engine may not run.
Will bad ignition coils cause the catalytic converter to heat up and go bad?
Yes. If a coil is bad causing one or more cylinders to not fire, this allows raw unburned fuel to enter the catalytic converter, where it is burned. This can ruin a converter.
Can a bad catalytic converter cause car to only idle?
It is one of many possibilities.
Will a bad catalytic converter cause service engine soon light to come on?
Yes it can.
Will a vacuum leak cause your catalytic converter go bad?
It is possible but highly unlikely.
Will a bad catalytic converter cause you to fail the emissions portion of the smog test?
Yes!
How can you pass inspection when you need a catalytic converter?
There's no possible way to pass inspection with a bad catalytic converter, if if you find out you have a bad catalytic converter during your inspection you have a chance after you after you have replaced the catalytic converter and the inspection no no charge/free!!
Will a bad truck muffler cause a truck a hard start?
No a bad muffler shouldn't, but a clogged catalytic converter will.
