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If the cat was damaged and restricting the exhaust it could cause a random misfire (P0300) but you would also have a severe loss of power.

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Q: Will a catalytic coverter make the engine missfire?
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Related questions

Where can you find the catalytic converter?

That depends on the make , model, and engine.That depends on the make , model, and engine.

Can a bad catalytic converter make an engine run hot?


Can a misfire or bucking accur with faulty catalytic converter?

A catalytic converter that has had a melt down and is restricting the exhaust from passing through will cause the engine to lose power on acceleration and on top end. If the cat is damaged bad enough the engine won't run much over an idle and may set a misfire code. You can test for that condition by installing a vacuum gauge to a direct intake manifold vacuum source. The vacuum will decrease as engine speed increases if the cat is plugged.Give us the year, make, model and engine info for more help.

Would a hole in car exhaust make vehicle missfire?


Where is the oxygen sensor on a 1996 Pontiac Trans Am?

There are FOUR What engine LT1? There should be one in each pipe before the cats and one after each on the V8! The two upstream moniter the engine and the downstreams moniter the efficiency of the catalytic coverter They MUST be replaced in pairs or the computer will say there is still a problem Oh yeah They are expensive $60 - $100 each Make sure the sensor is really the problem before replacing

What would make the number one piston missfire?

Year, make, model and engine size would help, but a bad spark plug, spark plug wire or fuel injector are a few possibilities.

Can the Catalytic Converter make the engine run hot on a 1993 e150 van?

Yes, if it is clogged.

What makes the catalytic converter go bad?

Many of the compounds that make your engine oil work better on the INSIDE of the engine are also "poisonous" to your catalytic converter as your engine starts to use oil. The nice thing about catalytic converters, they burn unused hydrocarbons that come out the exhaust. You may not KNOW that your engine is burning oil until the catalytic converter gives out or even gets plugged up. Watch the oil level in the crankcase. If it drops with no evidence of leaking, it's burning and your catalytic converter will die.

Would a bad catalytic converter make your check engine light go on?

Yes it would but that doesn't mean it is the cat

What would make 22 re engine barely run with the accelerator wide open?

Damaged catalytic converter is one possibility.

Service Engine Soon flashing?

Don't know what year, make or model you have but if you continue to drive that vehicle with the service engine flashing it may do serious damage to the catalytic converter(s).

Can you gut your catalytic converter?

Yes you can but you won't pass an emissions test and depending what year and make vehicle the check engine light will remain on.