From: Nospam@invalid.com   
      
   Scott Dorsey wrote:   
   > Rod Speed  wrote:   
   >> micky  wrote   
   >>   
   >>> Are my business assumptions correct?   
   >>>   
   >>> I'm trying to get rid of some engine trouble codes,   
   >>> and I need to install 2 or 4 oxygen sensors.   
   >>   
   >> Its very unlikely that more than one has failed.   
   >   
   > It's very unlikely any of them have failed.  I cannot even count the number   
   > of times I have seen cars blowing black smoke out the tailpipe which have   
   > just got new oxygen sensors because the computer was throwing a code saying   
   > the sensor was out of range in the rich direction.   
   >   
   > The morons don't bother to figure out why it threw the code, they just swap   
   > out parts at random.  They love swapping parts out.   
   > --scott   
   >   
      
   When my truck had codes showing all four Oxygen sensors were   
   suddenly bad, it indeed turned out that the damn computer itself   
   had failed. The dealer installed a new ecu. It burned out within 2   
   blocks. They finally installed yet another, but also replaced all   
   the wires to the O2 sensors. It's still running after 5 years now.   
      
   This truck isn't used much, so I think the damn rats probably   
   chewed up the wires. They ate all the original insulation around   
   the battery too :) The dodge ECU couldn't handle the short   
   circuits. A piss poor electrical design I reckon.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)