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signs of a blocked catalytic converter

Discussion in 'VR - VS Holden Commodore (1993 - 1997)' started by bandit10, Apr 8, 2010.

  1. bandit10

    bandit10 New Member

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    What symptoms or signs would you get from a blocked catalytic converter?
    Anyone had this problem? what did you notice?
     
  2. HARVZ-6

    HARVZ-6 New Member

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    Youll start loosing power, engine wont want to rev..

    what signs are you getting?
     
  3. bandit10

    bandit10 New Member

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    No sign's as such, just wanting to hear other peoples experience with blocked cats to see if anything sounds familiar :)
     
    Last edited: Apr 9, 2010
  4. Kurtp

    Kurtp VR Buicks > You ;)

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    Have you tried to give the tranny a service first? =|

    And checked the error codes?
     
  5. bandit10

    bandit10 New Member

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    Yes i have thanks, that was the 1st thing i did :)

    This thread is not about my transmission thought, its about blocked cats.
    I was hoping to hear from people that have experienced a blocked catalytic converter and the symptoms it produced

    Thanks
     
  6. 2DIE

    2DIE ONEDOLLAHOLLA

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    Dont know if mines blocked or not but it rattles like hell. Sounds terrible, its off the road for now though.
     
  7. Not_An_Abba_Fan

    Not_An_Abba_Fan Exhaust Guru

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    A blocked cat will reduce performance and increase fuel consumption. The sound will also change to a "ffffttttttttt" sort of noise. The engine pipes will get really hot too. The easiest way to tell if you ahve a blocked cat is to do a temperature test, if it is hotter at the front of the cat, it is blocked, if it is the same temp front and rear, it is not working or it's hollow, if it is at least 10% hotter at the rear it is working.

    Drive the car hard around the block, then while holding the revs up to 2000rpm, test the cat.
     
  8. bandit10

    bandit10 New Member

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    Awesome advice thats mate, now i just need to find a thermometer suitable to do the test.
     
  9. Not_An_Abba_Fan

    Not_An_Abba_Fan Exhaust Guru

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    An exhaust shop will have one and a cat test is usually free.
     
  10. brewsky

    brewsky New Member

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    Could a blocked cat cause a 5 litre to only fire on one bank ?
     
  11. Not_An_Abba_Fan

    Not_An_Abba_Fan Exhaust Guru

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    No 10 char
     

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