Strange smell

[Ant1981]

Lately when I start my MK4 and let it sit for about a minute, I get a bad eggy smell. That kind of smell is usually associated with the cat converter, but I've never ever had the smell with this car. Any ideas?

[Wayne]

I would say a cat / mixture problem, so could be a sensor going down or the cat in trouble.

[Ant1981]

Maybe there is a mixture problem, as the car is running like a complete bag of sh!t. MPG's are down, it's lumpy and the engine light is on. I've had engine lights come on and off since the first day I bought it. This has to be the sh!ttest car I have ever owned. Never again.

[Wayne]

Maybe there is a mixture problem, as the car is running like a complete bag of sh!t. MPG's are down, it's lumpy and the engine light is on.

Get it scanned for codes then, if the light is on then it will not be running right.

[dellenty69]

A dead CAT will throw the whole system out, so get it replaced and happy motoring.

[Ant1981]

What fault codes am I likely to see from a dead cat?

[dellenty69]

lambda sensor, emission faults etc. 

[Ant1981]

What are the codes for those though? I should be getting a code reader sometime this week.