RW> What if a problem arises that can't be detected without the CEL being off   
   RW> first? Overheating, no oil pressure, etc.? They'd be up a creek without a   
   RW> padle.   
      
   I agree.  There is no way I would drive around forever with the CEL on.  Once   
   i See it, I throw my code reader on it right away.  I carry it with me in my   
   trunk.  If I need more diags, I have the laptop with the OBDII cable.  :)   
      
   I had to get a different reader for the ABS, however.  It uses the OBDII, but   
   the apparently a different reader is needed.  I had several instances where I   
   had a speed sensor out in a wheel bearing - and this would tell me which one   
   was not working.  Otherwise, it would be a guessing game.   
      
   - Mark   
      
   --- WWIVToss v.1.50    
    * Origin:  http://www.weather-station.org * Bel Air, MD -USA (1:261/1304.0)