what is the CAT in a car's petrol engine?

Question

I had an MOT recently and it failed because the exhaust emissions carbon monoxide content was excessive and the Lamda reading was outside specified limits. Someone said that its possible that either the cars mixture is rich, its misfiring or the CAT is faulty.

Answer 1

Catalytic Converter, it's part of the exhaust system.

Answer 2

It's a kind of filter in your car exhaust system which remove the harmful particles in your car exhaust system.So that your car's exhaust gas may meet the required emission standard. Lamda is a unit in measuring the engine's proportion of fuel/air mixture through the exhaust gas. Rich mixture have a wide variety of causes. I recommend sending your car to a workshop authorised by your dealer & request for a OBD(On Board Diagnostic) troubleshooting session.It will determine whether there's any problems with your sensors or ECUs.Normally it is some errors in the ECU.Mechanical faults are more rare.

Answer 3

The cat has no longer something by any ability to do with ability. this is theoretically to get rid of pollution, and became the biggest motoring con ever in Europe. whilst we imported the belief from California (the place else?) the sole ran at above an ambient temperature of 68deg F. artwork that out. If the outer case of the cat is broken then what's occurring is the back-tension has replaced, inflicting the engine run poorly. I bumped off my cat 3 years in the past, passes the MoT nice.

Answer 4

to reduce co levels warm your engnie remove the plugs and then add about10ml of any petrol fuel treatment direct into the cylinders turn the engine over without refitting the plugs then wait 10 mins.refit the plugs then start the car.this will clean out the engine it will also produce clouds of smoke from your exhaust.rev the engine untill the smoke abates,usually takes 5-10 mins.the cat is your cars catalytic convertor

Answer 5

CAT stands for CATalytic converter. It is in the exhaust system, right after the exhaust manifold, but before the muffler. It is designed to superheat exhaust emissions without contributing to the exhaust fumes itself.

Answer 6

Catalytic Convertor

Answer 7

"CAT" is short for catalyc convertor.lt is not part of the engine,but part of the exhaust system.All cars running on unleaded fuel have one.The look similar to a small muffler and are ussually just back from the exhaust manifold by about 1 metre or so.lt is illegal to remove them as they do something to help emmissions.And are very costly to replace.

Answer 8

It's a catalytic converter, which removes some of the toxic emissions from inleaded petrol.

Answer 9

If i was you i would replace the lambada first it more than likely the problem, its is an easy thing to change and its on the exhaust down pipe with two wires attached to it , which are plugged in to the wiring loom . DONT DO WHILE HOT

Answer 10

the first thing to do is to replace the lambda censor this controls the fuel to air mixture of the engine, if that has gone its relatively cheep to replace, if it still fails mot then its the cat and they are expensive.