XPost: alt.home.repair   
   From: bourne@rorke.za   
      
   On 9/19/24 12:22 PM, Max Demian wrote:   
   > On 19/09/2024 16:48, Snag wrote:   
   >> On 9/18/2024 8:09 PM, Scott Dorsey wrote:   
   >>> Ken Blake   wrote:   
   >>>> I have a Mitsubishi Lancer 2003 which has low idle speed.   
   >>>> So low that it stalls unless I keep the gas on the peddle.   
   >>>>   
   >>>> What causes that?   
   >>>   
   >>> You're thinking backwards.  Think about what happens when you're at   
   >>> idle.   
   >>> Something needs to happen to make the mixture more rich, and that   
   >>> could be   
   >>> done in all kinds of different ways.  Some cars have an extra   
   >>> injector just   
   >>> for idle, some have software in the ECU that runs the normal   
   >>> injectors more   
   >>> rich, some have a gadget in the carb that is activated by engine vacuum.   
   >   
   >>    A total crock of shit Scott . Idle mix is NOT enriched , if   
   >> anything it's leaned out . I strongly suspect it's either an IAC or   
   >> the MAF sensor that's malfunctioning - IAC is most likely , and can   
   >> USUALLY be cleared up with being cleaned with carb spray . The best   
   >> thing for him to do is have one of the local parts stores run an OBDC2   
   >> scan . Just about every parts store does this for free . Makes sales   
   >> for them and saves the customer money by not just throwing parts at an   
   >> undiagnosed problem .   
   >   
   > Modern cars are too complicated. The idle used to be controlled by a   
   > screw that stopped the throttle from closing completely.   
   >   
   Yeah, I recall President Eisenhower mentioning how functional that   
   arrangement was during a Rose Garden press conference.   
      
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