May I suggest a further addition to this change, for
safety and longevity sake? You might consider a
permanent change to the wiring but do this: Have a
solenoid in this line which will break the circuit
once electricity (as in the ignition switch) is
removed, OR, for example, when oil pressure drops to
zero. (Think of a propane/natural gas heater that you
have to hold "on" until the re-ignitor is red-hot.) To
give two car examples of what I mean, General Motors
put a "kill" switch in the Vega/Astre that would cut
the electrical circuits if the oil pressure suddenly
and mysteriously dropped to zero at speed, as that sad
sack aluminum engine sometimes did for no good reason,
which grenaded the engine. Owners of Studebaker
Avantis have a problem replacing the mechanical pump
with an electric pump, (and as the gas tank is higher
than it really should be in any case), as you don't
want gas to continue to pump/or siphon/leak by itself
after a crash. A solenoid valve fixes that problem
with the siphon effect, and an oil pressure switch
takes care of the pump continuing after the engine
ceases running for whatever reason.
An oil pressure sensitive solenoid switch (lighted
would be cool <G>) that you would hold down a second
or so until the oil pressure is up after starting
would do the trick--also, it would be a handy "kill
switch".
Jim Bartley
Prince Edward Island
87 505 Turbo--with the handy extra switch for starting
63 Studebaker Wagonaire
49 Kaiser Special
94 Toyota Corolla
other junk
--- Bob Bruce <bobbruce@mts.net> wrote:
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
- 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
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Received on Tue Sep 20 04:22:14 2005
