[Peugeot-L] Re: 405 Mi16 still idling bad, advice needed

Blade,
Check for air or vacume leaks. One method I have read about is to use propane torch (not lit!) and run the tip blowing propane all along the air intake plenum, around vacume hoses, gaskets, etc. If the idle speeds up or smooths out, you've found your air leak. You still need to check fuel pressure- you mentioned earlier that the fuel pump screeches. Also fuel delivery- you should be able to fill a pint jar in about 15 seconds.

• In peugeot-L@yahoogroups.com, "blade44m" <zaphod44@...> wrote:
  >
  > Hello group,
  >
  > My newish '89 405 Mi16 is still having idling issues. At any
  > throttle over idle, it runs and drives great! However, when left to
  > idle on it's own, it idles slowly (about 700 RPM), and it surges,
  > shakes, and seems like it's on 2 or 3 cylinders.
  >
  > So far, I have replaced the plugs, plug wires, cap and rotor. From
  > my good running 405, I have substituted the entire airbox assembly,
  > the idle control valve, and the coil, all to no avail.
  >
  > A listmemeber suggested to me to check the fuel pressure regulator
  > on the fuel rail. I did this by pulling the hose off to check for
  > leaking fuel and there was none. I replaced the hose, and applied
  > vacuum to it with my Mityvac while the car was running. There was
  > definately a difference between no vacuum and full vacuum, and the
  > regulator held vacuum, but it ran horribly either way.
  >
  > I also checked the compression and all cylinders are within 10 PSI
  > of 200 PSI. I should also point out that the Check Engine light
  does
  > not come on while it's running bad, but the light does work (lights
  > when I'm cranking).
  >
  > Does anyone please have a suggestion as to what I should check
  next?
  > I need to get this car smogged to get the title transferred,
  > otherwise I have to non-op it. Thanks in advance!
  >
  > Matt Kile
  >
  > '89 405 Mi16 in white - 230,000 miles runs great!
  > '89 405 Mi16 in grey - 150,000 miles idles bad :(
  > '80 505 SD - A zillion miles +70 a day
  >