What are the symptoms of a bad catalytic converter?

Written by shelley moore
  • Share
  • Tweet
  • Share
  • Pin
  • Email
What are the symptoms of a bad catalytic converter?
Catalytic converters can become clogged and need to be replaced. (yellow car, a honda Japanese sport car model image by alma_sacra from Fotolia.com)

It's not easy to diagnose without a mechanic, but numerous symptoms can point to a bad catalytic converter. The catalytic converter's purpose is to change hydrocarbons, carbon monoxide and nitrogen oxides in vehicle emissions into the harmless compounds of carbon dioxide, nitrogen, oxygen and water. Catalytic converters don't typically fail, but they can become clogged.

Other People Are Reading

Tachometer

Decreased engine power--indicated by low revolutions per minute (RPMs) on the tachometer--is a symptom of a bad catalytic converter.

Acceleration

Another sign of decreased engine power is hesitating or bucking when you try to accelerate.

Driving Uphill

The car may seem to lose some power when going uphill.

Temperature

If the engine runs hotter than usual but the cooling system is up to par, that may indicate catalytic converter problems.

Exhaust

Black smoke coming from the exhaust pipe may be a symptom of a bad catalytic converter.

Smell

A failing catalytic converter can cause a rich fuel mixture that makes the exhaust smell like rotten eggs from the hydrogen sulphide.

Don't Miss

Filter:
  • All types
  • Articles
  • Slideshows
  • Videos
Sort:
  • Most relevant
  • Most popular
  • Most recent

No articles available

No slideshows available

No videos available

By using the eHow.co.uk site, you consent to the use of cookies. For more information, please see our Cookie policy.