XPost: alt.home.repair   
   From: kludge@panix.com   
      
   Isaac Montara   wrote:   
   >I have a Mitsubishi Lancer ES early 2000s with a P0171 that keeps coming   
   >back after I reset it with an OBDII hand-held code reading tool.   
   >   
   >I put new spark plugs in and it still sets the P0171 bank 1 too lean.   
   >When it idles, it often kills the motor so it's not getting enough fuel I   
   >think.   
      
   Why plugs?  That's not likely to be related in any way, it is not like you   
   are getting a spark error.   
      
   Your first job is to figure out if it really IS too lean or if the computer   
   is deluded.   
      
   You need a real scan tool so you can see if the other bank is being   
   forced too rich or not.   
      
   With an inline engine where everything is one bank you can smell the   
   exhaust and tell if it's too rich or too lean, but you're going to need   
   the proper tool for this one.   
      
   >How do I increase the idle RPM on an early 2000s Lancer ES?   
      
   Why would you want to increase the idle RPM?  If the engine really IS   
   running too lean, that's a good way to burn some valves.  On the other   
   hand if the engine is running rich and the computer thinks it's too   
   lean, that also does nothing to help the problem.   
   --scott   
   --   
   "C'est un Nagra. C'est suisse, et tres, tres precis."   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)