Re: [Peugeot-L] Re: 406 coupe v6 intermittent problem

From: Bob Bruce <bobbruce_at_mts.net>
Date: 09/05/05

I would run a switched line with a fuse direct from the battery to the pump. and an extra ground from the pump to the body. As soon as the car kacks flip the switch. Don't forget to turn it off if you turn off the car or have a crash You will have defeated all the safety systems that shut down the pump. This is dangerous but compared to getting caught out in traffic it pales The closest thing I have to your car are 1991 405s I forget where the 405 pump grounds and I know it is not inside the left rear wheel well like the 505.
But I got screwed up for a day changing parts on a rusty 505 when all it had was a bad ground in that wheel well.
I was also told by a Peugeot service rep that bad grounds were the cause of about 80% of fuel injection problems..

I had a problem with an 85 505 turbo
It would kack for no apparent reason or time turned out there was glitch in some of the injection ecus from day one It was 7-8 years old when this was finally discovered fortunately the initial complaint was on a work order from the Peugeot dealer dated 4 yr and 10 months after the 5 year emissions warranty started. They cheerfully gave us a new ecu.

The message: Keep Your Bills

Bob  

  • Original Message ----- From: Paul Strickland To: peugeot-L@yahoogroups.com Sent: Monday, September 05, 2005 10:26 AM Subject: [Peugeot-L] Re: 406 coupe v6 intermittent problem

  Steve,

  This is a nasty problem !

  I had this same problem on an 85 N9T engine with only 1 ignition coil.

  It took me a few years until I just caught on to the problem.

  Same thing would happen. Car would run just fine and all of sudden   shut down. I would check for ignition and it was fine. Must be fuel   cut off. I checked all the wiring and it looked good.

  Then one time at night when the thing was running, I noticed a faint   glow from the high tension lead on the ignition coil.

  What was happening here was that the high voltage would snap over to   the primary side, the 12V input. and put a spike on the 12V. This in   turn, got into the injection ECU and cut off the fuel supply.

  I could prove this by just putting in a rolled up paper napkin between   the high voltage output and the 12 V. I could go forever and have no   problem. But remove the paper and at some random time, maybe in a week   or month, the car would shut down. I have since replaced the coil.

  This may or may not be your problem, but you have 6 coils.

                       Paul

  85 gas turbo
  87 V6
  Long Island, NY
    On
  • In peugeot-L@yahoogroups.com, "Steve Rodgers" <steve.rodgers@t...> wrote:
    > Hi, I'm almost at the end of my tether trying to figure out this
    > problem - and if anyone here can help me out I would really
    appreciate it.
    >
    > I've got a 98 406 coupe - 3.0 v6 manual. great car.
    >
    > bought it 3 years ago, and there has been an intermittent problem
    > which has been getting progressively worse.
    >
    > basically, from time to time the car will stop pumping fuel for a very
    > small amount of time - say a few seconds. really quite violent stop -
    > as if the fuel pump has halted. then it comes back fine.
    > the car has had about 60 hours of diagnostics at caffyns peugeot, and
    > they can't find any faults.
    >
    > it gets worse though, the problem gets more frequent - e.g. every few
    > minutes instead of every few days. then the car just stops completely.
    > usually when I'm driving at full-pelt down the motorway, resulting in
    > a freewheel into the hard-shoulder.
    >
    > once it's stopped it will not restart - again as if the fuel pump has
    > gone. I get the orange engine-management problem light coming on.
    >
    > I disconnect the battery - by removing postive terminal - alarm goes
    > off. reconnect battery - alarm still goes off. alarm will not turn off
    > at all now - even with key.
    > but, the engine works again. eventually after about 10 mins the alarm
    > will stop its noise - really very anonying.
    >
    > the problem is that it's an intermittent problem and that I cannot get
    > the car to the garage whenever it does happen, and they cannot
    > reproduce it.
    >
    > the ECU doesn't store any faults.
    >
    > could this be a faulty ECU? - that's my gut feeling.
    > has anyone experienced or heard of anything similar to this before?
    >
    > regards
    >
    > steve

  Recommended format for your email subject lines:   Model # [Model Letters] Year Subject

  Examples:
  505 88 V6 Mileage
  405 Mi16 89 Ignition Coil source?



  To unsubscribe from this list send a blank email message to PEUGEOT-L-UNSUBSCRIBE@EGROUPS.COM

  SPONSORED LINKS Peugeot pepper mill Peugeot salt and pepper mills Peugeot salt mill

        Peugeot watch Peugeot Peugeot 405



  YAHOO! GROUPS LINKS     a.. Visit your group "peugeot-L" on the web.       

    b.. To unsubscribe from this group, send an email to:

     peugeot-L-unsubscribe@yahoogroups.com
      

    c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.


[Non-text portions of this message have been removed]

Recommended format for your email subject lines: Model # [Model Letters] Year Subject

Examples:
505 88 V6 Mileage
405 Mi16 89 Ignition Coil source?



To unsubscribe from this list send a blank email message to PEUGEOT-L-UNSUBSCRIBE@EGROUPS.COM
 

Yahoo! Groups Links

<*> To visit your group on the web, go to:

    http://groups.yahoo.com/group/peugeot-L/

<*> To unsubscribe from this group, send an email to:

    peugeot-L-unsubscribe@yahoogroups.com

<*> Your use of Yahoo! Groups is subject to:

    http://docs.yahoo.com/info/terms/   Received on Mon Sep 5 17:33:59 2005