bb311ae4   
   From: Anyolmouse@invalid.invalid   
      
   "Trevor"  wrote in message   
   news:6abcba69-ea4a-4a52-bd20-a4f804709ee6@x16g2000prn.googlegroups.com...   
   | My check engine light has come on and then gone off periodically for a   
   | couple of years or so. I stopped at Checker and found out that it's an   
   | O2 sensor, but haven't worried about it since it does eventually go   
   | back off.   
   |   
   | However, I went to get the emissions test a couple of days ago, and   
   | didn't realize until after it had failed that the check engine light   
   | was on. I've since been trying to decide where to take it to get the   
   | sensor replaced, but this morning I noticed the light is off again.   
   | Now I'm wondering if it would pass right now, or if I still need to   
   | get it fixed? Would it be reasonable for me to ask to have it retested   
   | even though I haven't taken any action to fix it?   
   |   
   | Thanks,   
   | Trevor   
      
   It may not be an oxygen sensor. It turned out that the MAS sensor was   
   dirty in my '99 Tacoma. The dealer had previously replaced the sensors   
   twice on this truck before I bought it. A mechanic friend tipped me off   
   on the airflow sensor being dirty could cause the problem. I picked up a   
   can of cleaner at the local parts store (about five bucks), removed the   
   sensor (two minutes), cleaned it and let it dry on the bench for an hour   
   or so and put it back in the plenum ( two philips head screws). That was   
   last March. I have not had a check engine light come on since then. A   
   lot cheaper than replacing oxygen sensors.   
      
   --   
   Anyolmouse   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)