XPost: alt.home.repair   
   From: NONONOmisc07@fmguy.com   
      
   In alt.home.repair, on Wed, 07 Apr 2021 22:30:04 -0400, micky   
    wrote:   
      
   >   
   >>I used the scanner today and the short and long term trims tracked the   
   >>results of the guy who made the video, at idle and up to 2500rpm.   Also   
   >   
   >An important thing I left out was that he said "When we raise RPM to   
   >2000, does SHRT [short term trim] get better, or worse, or the same?   If it   
   gets better,   
   >lower, usually a vacuum leak."   
      
   And he said in the video, "If it's worse or the same, it's probably a   
   fuel delivery or Mass Air flow problem."   
      
      
      
   >It got lower for him.  And for me, it went up a little at first but then   
   >went down somewhere between quite a bit and a lot.  Numbers, if any, are   
   >in the car.   
   >   
   >More than one value I saw go in two different directions, and in other   
   >aspects of my life, a little bit in one direction at first and much more   
   >in the other direction soon after.  I think he mentioned that too.   
   >   
   >So so far it's looking like a vacuum leak.   
   >   
   >Maybe no need to replace either 02 sensor, especially the  one behind   
   >the engine.  OTOH, I've read that they fail with age or miles.  70,000,   
   >100,000 were mentioned and I have 140,000.   
      
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