Water in my 1996 406 pls help!

[406owner2]

Thanks will do

[406owner2]

Just before replacing it, I have put the pump in a bucket with petrol and good news it's working ... I now am ruling out pump failure, and hopefully just an electronic problem like the relay or a blocked pipe,
(hope the pump is still pumping sufficient pressure, i don't have a meter to test that, however pinching the fuel line has hard as i can still petrol flows through the line, my initial thoughts are that it's good enough and the engine should be able to get fuel from the pump.)

The relay shorted slightly while i worked on it connected to the car, because of myself, i hope everything is now still ok due to that...sigh..., the immobilizer code is now permanently on green (meaning a go for start) usually i had to put in a code before it would go green..... and 10 seconds after i had shut down the ignition the ecu for some reason clicked the relay, now it does not do that anymore.. perhaps it only works if the pump is connected ? does the ecu have any safety protection built in, is there a way to test/and or reset it ?

[lozz]

Hello,

reset ecu?

just take negative battery lead off. leave off for 15mins' ecu shouid then reset.

(EDIT.)
put everything back together, and leave the electrics alone,

after all you shouid only be dealing with a Miss/fuel after running out of fuel,

so id see no reason why to start looking at anything else,

get some clean fuel in there, prime system afew times (ign on/off)

check pipes for leaks (the ones on filter and tank!) if no leaks then see if it will start

[steve_earwig]

does the ecu have any safety protection built in

A fuse? Check that if the reset doesn't do the trick.

[406owner2]

Thank You both, i checked the fuses under the stearing wheel and in engine compartment all looks o.k.

I think i would still be having a problem with the relay not sending power to the pump, so faulty relay i guess and am hoping the ecu is ok ?

Immobilizer system is permanently on green ?

[lozz]

when the ignition first goes on can you hear relay click?
might be hard to check on your own tho, you may need a extra set of hand's.

but looking back at you other posts here,

you mentioned you couid hear fuel pump purring away?

so if so why are you suspecting fuel relay.. it must of been working or atleast at one stage.

[lozz]

(Just before replacing it, I have put the pump in a bucket with petrol and good news it's working ... )

how did you test it at that stage.. ?

[406owner2]

Hi Lozz, when i heard the pump purring away was when i manually pushed in the relay, (this thread is quite long perhaps you missed the part where i said i forgot to reconnect the pump before manually pushing down the relay,) when i connected the pump, pushed down on the relay the pump started to work.

i got a picture of how i tested it that is now attached below, i also have a video i took with the phone, but have limited bandwidth...

I place 700ml fuel in a bucket and fired up the pump, then threw in the remainder 300ml, picture below.

So now it's getting that pump back in the tank, i'm just using the hoover first to suck up any dust and particles that might have fallen into the tank (already did, but just want to give it a once over once more)

I "beat" the retainer back to at least usable shape, i used a jigsaw to enlarge the hole in the body so it can fit through, now i just need to put it all back, big question is, i hope the ecu is ok....? and how much fuel will i have to add in the tank, i must say the pump did not need much to get going.

Anyway..... taking a break from all the work... will be going back after i've rested some to re fit the pump.

[steve_earwig]

i'm just using the hoover first to suck up any dust and particles that might have fallen into the tank

Remember the warnings about petrol fumes igniting from the sparks in the motor!!!

[lozz]

fuel pump.PNG

am I seeing things!

see pic of pump in op last post W.T.F ??


if that's chopped and wired in on internal of pump it couid end up a bomb waiting to go off,
the petrol will just melt off any future insulation,


Don't put this pump back in the car!!

[406owner2]

Thanks for the concern Steve, the tank was stone dry and i plugged of the hoses so no fumes could escape, all was ok.

Lozz, no what you are seeing is i disconnected the 12 volt motor wires from the pump (it has plug style connectors to the pump itself, then i put 12 volt battery wires on those 2 motor plugs,
the insulation tape you see was me insulating the battery connection so no sparks would get out (if there were to be any at all to begin with) just an extra safety precaution, then, further the wires leading to the battery is extended so i connect the battery away from the pump.

Then the empty pipe in the background is a different pipe altogether, slightly thinner one i used to syphon out the petrol in the tank.

And the picture was taken after the pump was switched off, i have a video of it running and pumping fuel just fine, i'll try take a snapshot of the video i made if you want to see it.

The pump is now back in the car with retainer securely locked in place.

[406owner2]

Now i need to know, should i first pull the spark plugs and crank the engine ? i could not recall seeing any water when i siphoned out the fuel from the tank, however could've missed it for i was so full of fumes and did not bother to properly have a look. what if the water is inside the lines and engine still ?

If i crank the engine, i guess the pump should be switched on, or i need to disconnect the fuel line coming from the engine below at the fuel filter, for i now know the fuel pump is not letting any air through even when switched on, it only allows fuel through it. by disconnect the fuel pipe at the fuel filter, air would be allowed to go through ? by passing the pump ? Then crank the engine ?

Then if there is a short in the relay, (i've caused a short) is there a way to test the ecu, it seems fine other than the immobilizer code keypad now permanently on green (somehow i think it is on auto immob)
(without me having to put in the key code, i think that is a way one can program it ?) i used to have to put in the key code.

[steve_earwig]

Thanks for the concern Steve, the tank was stone dry and i plugged of the hoses so no fumes could escape, all was ok.

Errr, ok, it kind of sounded like you had the vacuum cleanr sucking out crud from inside the tank...

Fuzz

Fuzz, no what you are seeing is i disconnected the 12 volt motor wires from the pump (it has plug style connectors to the pump itself, then i put 12 volt battery wires on those 2 motor plugs,
the insulation tape you see was me insulating the battery connection so no sparks would get out (if there were to be any at all to begin with) just an extra safety precaution, then, further the wires leading to the battery is extended so i connect the battery away from the pump.

So you were panicking about something you did?

Where did the water go then. did it evaporate? Or is it all sitting in the fuel system??

Without a code reader the easiest way to test the ecu is to see if it runs, but I think we need to check where the water is. It could be in the filter, in the pipework or maybe in the fuel rail. I'm not sure what you have there to clear it, maybe you could disconnect the pipes from the fuel rail and blow it out

[406owner2]

Thanks for the concern Steve, the tank was stone dry and i plugged of the hoses so no fumes could escape, all was ok.

Errr, ok, it kind of sounded like you had the vacuum cleanr sucking out crud from inside the tank...

Fuzz

Fuzz, no what you are seeing is i disconnected the 12 volt motor wires from the pump (it has plug style connectors to the pump itself, then i put 12 volt battery wires on those 2 motor plugs,
the insulation tape you see was me insulating the battery connection so no sparks would get out (if there were to be any at all to begin with) just an extra safety precaution, then, further the wires leading to the battery is extended so i connect the battery away from the pump.

So you were panicking about something you did?

Where did the water go then. did it evaporate? Or is it all sitting in the fuel system??

Without a code reader the easiest way to test the ecu is to see if it runs, but I think we need to check where the water is. It could be in the filter, in the pipework or maybe in the fuel rail. I'm not sure what you have there to clear it, maybe you could disconnect the pipes from the fuel rail and blow it out

I meant Lozz of course ! ! !, so sorry, my mind has not thinking straight it's been a LOOONG week.... and a lot to worry about..... NO sleep ! ! ! ! ! ! ! !

Steve , wrt my testing the pump, i was just concerned because i know i had to test it, for i have no other choice, many a person get's done in by mechanics all over her in SA. I need to try my best to establish the exact problem, and you guys have helped me get far in the process so far.

wrt ecu, i think it still runs ?? i'm getting power from the pump plug at the back when i manually push down the relay and i get the usually humming sound... so i'm hoping it's ok.

Water... every pipe i've sucked on so far i just taster pure fuel, can't jack the car but, but if i have to to i'll try to see if i can buy a jack, i haven't tried to siphon on the pipe leading directly to the "rail?"
It's the pipe from the fuel filter. leading to the "rail ?" engine, should i try siphon from there ?

I guess to get to the rail itself i would have to be underneath the car at the middle front of the vehicle ?

[steve_earwig]

I mean this part, number 7 http://peugeot406coupe.nl/catalogus/D8F/1/14N60A.HTM