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A clogged converter can. Easiest way to tell if your converter is stopped up is open the hood as night when the engine is operationally warm. The exhaust manifold will begin to glow red because they are so hot. It needs to be totally dark to see this. This is very bad for your engine. Replace the converter ASAP.
Use a point and shoot thermometer. (Auto parts stores, A/C houses and others)
surface of the exhaust manifold varies from 241oC for a minivan to 550oC for a passenger car. ( Temp above 560 C is a red flag)
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∙ 11y 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.
