how important are those sensors in the cats

Discussion in 'Technical' started by silver300zx, Apr 28, 2006.

  1. silver300zx

    silver300zx New Member

    both sensors in the cats on my zed have the canles ripped out , can i bridge them out or something or do i need them
     
  2. 90TTZ

    90TTZ Back From The Dead

    If your cats are gutted, you definitely don't need them.

    IMHO, I reckon those sensors were a wild idea by Nissan engineers. You don't see that setup on anything else.
     
  3. silver300zx

    silver300zx New Member

    can i correct my spelling , canles = cables

    as in the wires going to it
     
  4. JBZ

    JBZ New Member

    They will let you know if your cats are overheating, it will usually mean one or two cylinders arn't firing and excess fuel is going to the cats.
     
  5. mafi-zed

    mafi-zed the resident hoon

    not just nissan mate, toyota too, the supras have em, infact i think

    the mazdas have em too..
     
  6. Quinny

    Quinny New Member

    Sorry to hijack the thread a little, but what do these sensors do if an over temperature is measured?

    Is there a warning light on the dash or do they feed the ecu or something?

    Any way of testing that they are still good?

    I have heard of catalitic converters getting hot enough to set fire to the carpet inside the car, so if possible I think that I would like em to work.

    Cheers.
     
  7. JEDI-77

    JEDI-77 Jedi Master

    unlike some other sensors....

    the sensors in the CATS are not monitored by the ECU and do not affect the function of the car or influence its performance. All they do is make a little light flash on your dash if your CATS get hot. Many zeds have them disconnected when they fit new or highflow CATS (mine are disconnected).

    Cheers
     
  8. Datzboy

    Datzboy New Member

    I've been wondering if they could be hooked up to a temperature gauge to give EGT (Exhaust Gas Temperature)?
     
  9. 90TTZ

    90TTZ Back From The Dead

    Jaycar sell an EGT kit for around $50
     
  10. pexzed

    pexzed Forum Administrator

    Re: can i correct my spelling , canles = cables

    I wouldn't worry, none of us can read anyway :wacko:

    When I put my reverse EL gauges in, I rewired my Low Fuel warning light to the cat temp sensor light, since the EL gauges cover the old position of the low fuel light.

    No need to discuss why the cat temp sensors are not required by me any more, but I an sure a lot of you can guess.
     

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