Peugeot Re: 86 505 n9te high idle

From: august macbeth (august_macbeth@hotmail.com)
Date: Tue 26 Mar 2002 - 15:17:39 EST

  • Next message: cbs604: "85 505 GTi puzzle"

    welp, spent some time with the rig today but no luck.

    installed new plugs, plug wires, cap 'n rotor. tried a different AFM, and
    different injector resistor pack (for the hell of it).

    Did a compression test and everything is all good there. cylinder #1 seems
    weak, disconnecting the plug wire, rpm drop is there, but less then all the
    others.

    also, with o2 sensor plugged in (idling at 1800), disconnect the TPS and
    idle falls to 1000.

    august

    >From: "august macbeth" <august_macbeth@hotmail.com>
    >To: peugeot-L@yahoogroups.com
    >CC: PeugeotCommunity@egroups.com
    >Subject: [Peugeot-L] 86 505 n9te high idle
    >Date: Sat, 23 Mar 2002 20:12:19 +0000
    >
    >some of you may remember me posting something a while back about a 86 turbo
    >car with the idle at 1800rpm. we really haven't done much with it because
    >no
    >one has been driving the car lately etc etc, but smog is past due so
    >something has to happen soon. just so you guys have somewhat of an idea
    >what's up. there is definitely no vacuum leaks, we've spent quite a bit of
    >time with that in the past and found nothing. the accordion rubber tube
    >going from the afm to the turbo inlet is new, etc etc. i'm pretty sure it's
    >a component due to if it was a vacuum leak, idle would always be high, not
    >vary. if the car is idling, blimp the gas, the rpm will go up, then drop
    >down to 1000rpm for a second, then rise back up to 1800. tons of stuff has
    >been changed (AFM, throttle body (including TPS and microswitch), aux air
    >valve, ignition ECU, NTC sensor) but no change. also, timing is set to
    >factory spec.
    >
    >for some reason, if the single black wire going to the o2 sensor (?signal?)
    >is disconnected, the idle drops down to where it should be. so if the o2
    >sensor is out of the picture, the car idles fine, (a new o2 sensor was
    >installed a couple of days ago).
    >
    >the other thing is the overall running, there's a ton of missing and the
    >thing just flat out runs rough in the low rpm range (highway it's fine).
    >listening near the back of the car while it's running, there's a clear
    >miss.
    >we put the car on the exhaust gas analyzer, at 1000rpm, the HC reading was
    >at like 1400, but everything else was ok. at 3000rpm the HC reading dropped
    >to a normal levels and still, all the other numbers were ok. i know that a
    >high HC reading indicates a misfire, so something with the ignition has to
    >be whacked.
    >
    >i'll be getting new cap, rotor, plug wires from my local peugeot dealer on
    >monday along with new plugs.
    >
    >if any of you have any suggestions, please let me know.
    >
    >august
    >
    >PS. Joe: will the WR5DS or W5DS plugs be ok in a stock N9TE? or would you
    >only recommend them after i get everything fixed, running at spec, and up
    >the boost and change injectors.
    >
    >
    >
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