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

From: gary freeman <riven2649_at_yahoo.com>
Date: 09/07/05


Steve, unfortunately I was not with Peugeot anymore when these cars came out; so I never got to work on them. If it had the kind of switch that Eduardo was describing (an inertia switch), then you just push it back down. But your car may not use that method as it may be newer or different than in another country. Most cars today use either an ignition signal or sometimes an alternator output to determine if the engine is still running in order to turn off the fuel pumps to prevent a fire in the case of an accident, which is the whole purpose for these cut-off systems. The reason they phased out the inertia switch method was because they could be "popped" by bad bumps and such; but your car could have one, but placed somewhere
else such as in the trunk behind the side panels. Your owner's manual should mention it if it has one. I don't
think it does because they're mechanical spring loaded devices that I've never known to be able to reset themselves. The thing to do would be to determine if you're getting an injector pulse or if you can hear them working next time it dies; and if it does, then check for fuel pressure as it could be a weak punp or partially clogged filter that's causing vapor lock. If you're not getting a signal, then you need to check the things that would prevent the PCM(ECU) from firing them. A main culprit is the TDC sensor; however, it's only needed for starting, so if it kills while you're driving, that's not the problem. Besides bad wiring, one of the main culprits in car electrical systems are relays, and the PCM is usually powered by a "main relay". Find out where that is, look at the diagram on the side and make an appropriate jumper wire with crimp
on spade connectors(probably two wires going into one, the one side plugging into where no.30 goes, and the other two going to where the two 87s go);and plug that into the connector in place of the relay. If it now runs, I would suspect the relay. The other guy's post, I think it was Steve, had some good ideas that I would look into also. Whatever, don't get discouraged or feel
bad as it's probably nothing major and intermittence gives the best professional mechanics plenty of trouble. Good luck and let us know what happens.

  • Steve Rodgers <steve.rodgers@ts-a.com> wrote:

> I can't see anything of that description in the
> engine bay.
> and yes - how would they be reset - battery
> disconnect?
>
> On Wednesday 07 Sep 2005 00:17, you wrote:
> gf> Do they reset themselves?
> gf>
> gf> --- Eduardo Kaftanski <e@nn.cl> wrote:
> gf>
> gf> > On Wed, Sep 07, 2005 at 12:23:24AM +1200, Pug
> NZ
> gf> > wrote:
> gf> > >
> gf> > > With the alarm, have you tried turning it on
> and
> gf> > off with the ignition
> gf> > > key in all of the possible positions? Does
> it have
> gf> > a valet switch or
> gf> > > anything like that? Perhaps the remote
> battery is
> gf> > flat or the alarm has
> gf> > > a wiring fault?
> gf> > >
> gf> >
> gf> > also... that car has a gravity shock
> immobilizer.
> gf> > Look for the RED rubber
> gf> > mushroom shaped gizmo near the battery. If
> they get
> gf> > bad they can be trigered On
> gf> > by a pothole...
> gf> >
> gf> >
> gf> > --
> gf> > Eduardo Kaftanski
> gf> > eduardo@linuxcenterla.com
> gf> > Red Hat Certified Engineer/Instructor/Examiner
> gf> > Gerente Ingenieria LinuxCenter LatinAmerica
> gf> > Mariano Sanchez Fontecilla 310, 2do piso,
> Edificio
> gf> > Birmann24, Las Condes, Chile
> gf> > http://www.linuxcenterla.com +56-2-4834000
> gf> >
> gf>
> gf>
> gf>
> gf>
> gf>
> gf>
>



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