Rattling Cat? Change it now!
  • Register
  • Help
Results 1 to 11 of 11
  1. #1
    1000+ Posts Haakon's Avatar
    Join Date
    May 2002
    Location
    canberra...
    Posts
    8,752

    Default Rattling Cat? Change it now!

    That will learn me... Catalytic convertwer has been rattling away for a while now, and i have been ignoring it on account of being too poor to get it replaced

    Cruising down the freeway towards home, and the power drops off badly, along with a nasty hissing noise under "power". Getting worse quickly. Finally get to an off ramp, and it dies at the lights. Much cranking gets it going - just. Not good

    Manage to get it onto a side street and all is not well. A handy piece of wood I find is used to bash the buggery out of the cat, and it fires up again and runs perfectly, and then I manage to get it home slowly.

    It would seem a bit of the disintergrating porcilen matrix of the cat had wedged itself firmly in the outlet of the cat and had blocked the exhaust fairly comprehensivly, and the hissing was gas being forced past the flexible flange joint. I had put the drop in power over the last few days down to a dud load of fuel, but i guess it was blocked exhaust after all...

    Advertisement


    I at least know what I am doing Saturday - pulling the cat off and bashing the bits out
    I tried to drown my sorrows in alcohol, but the bastards learnt how to swim

  2. #2
    Fellow Frogger!
    Join Date
    Oct 2004
    Location
    monbulk
    Posts
    645

    Default Dead Cat

    My 405 runs sans cat. It does have a slightly distinctive hollow sounding exhaust note, but all the power and economy is back. Mine was destroyed by a head gasket blowing and the contaminants destroying the porous ceramic. The bits then turned sideways and strangled the motor. It's pretty disconcerting when it happens. You'll have to remove all the ceramic pieces. And replacing the cat is a legal requirement......







    (apparently)

  3. #3
    Fellow Frogger! Filldebin's Avatar
    Join Date
    Sep 2003
    Location
    Sweden
    Posts
    177

    Default

    You blokes are so lucky not to have emission checks every year. If it doesn't work you just have to buy a new catalyctic section. Fortunately, there are cheaper 'standard' ones available now.
    Phil

  4. #4
    1000+ Posts Haakon's Avatar
    Join Date
    May 2002
    Location
    canberra...
    Posts
    8,752

    Default

    Brand new stainless high flow cat will set me back $300. But at the moment a trip to the dentist is more pressing

    So for the moment I will have to run sans cat, but will get it replaced as soon as I can.
    I tried to drown my sorrows in alcohol, but the bastards learnt how to swim

  5. #5
    Fellow Frogger! Ren25's Avatar
    Join Date
    Dec 2002
    Location
    Perth
    Posts
    299

    Default

    "Put a Crowbar thru it" (advice from my car man)
    Cheers
    Mike
    Armageddon was yesterday
    Today we have a problem


    2000 406 Hdi X 3
    2003 307 Hdi

  6. #6
    1000+ Posts Haakon's Avatar
    Join Date
    May 2002
    Location
    canberra...
    Posts
    8,752

    Default

    Mutter mutter... Under the car stuffing around with exhausts is NOT how I wanted to spend saturday morning . But all done now - so quite, rattle free and feel the power!
    I tried to drown my sorrows in alcohol, but the bastards learnt how to swim

  7. #7
    1000+ Posts Dave's Avatar
    Join Date
    Apr 2001
    Location
    Brisbane
    Posts
    1,340

    Default

    phwarrr as much extra power as you got from the AF sticker???

    Dave


  8. #8
    1000+ Posts Shobbz's Avatar
    Join Date
    May 2003
    Location
    Brisbane, Australia
    Posts
    1,284

    Default

    Quote Originally Posted by Dave
    phwarrr as much extra power as you got from the AF sticker???

    Dave
    I have heard with higher fuel prices the power has actually increased.

    shobbz
    Previous
    2005 407 ST Exec
    1975 504 GL

  9. #9
    Fellow Frogger! James504's Avatar
    Join Date
    Jul 2004
    Location
    Brisbane
    Posts
    803

    Default

    Quote Originally Posted by Shobbz
    I have heard with higher fuel prices the power has actually increased.
    shobbz
    Lucky I have two!
    2006 Peugeot 206 Xt
    1991 Toyota mx83 grande 1jzgte

  10. #10
    1000+ Posts Haakon's Avatar
    Join Date
    May 2002
    Location
    canberra...
    Posts
    8,752

    Default

    Power is up even more after I disconnected the battery to reset the ECU. It had a bit of flat spot at around 3000 rpm and is all gone now. Guess taking off the O2 sensor upset the computer
    I tried to drown my sorrows in alcohol, but the bastards learnt how to swim

  11. #11
    1000+ Posts mr bern's Avatar
    Join Date
    Feb 2003
    Location
    Melbourne (or touring)
    Posts
    1,152

    Default

    Quote Originally Posted by Haakon
    Power is up even more after I disconnected the battery to reset the ECU. It had a bit of flat spot at around 3000 rpm and is all gone now. Guess taking off the O2 sensor upset the computer
    I don't know how much credence to give this, but I do know that the penalties for disabling a cat are pretty severe, and according to what I was told, a vehicle without a cat sticks out like the proverbials to a monitoring station, even if it's buried in the middle of very heavy passing traffic. Might be something to do with how it's supposedly just about impossible to suffocate yourself with a (properly-regulated) car exhaust these days ...
    MY15 208GTi

    previously:
    MY10 Sportium HDi6 and 1.6L auto
    MY99 206GTi
    MY96 306XSi auto
    MY02 Clio 1.4L auto

    1ére grenouille:
    MY5? Simca Aronde 90A



    QUICK! MORE BREAD, MORE CIRCUSES!!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •