Technical 6F ECU wiring loom help

[Dragon Man]

the old style injected pandas all had a different fuel tank. the closest tank would be the panda 4x4 injected fuel tank. which was the same shape as the marbella's tank, just had bigger openings to put a fuel pump in.

anyway i am not going down the line of swapping fuel tanks over. not when i can get an in line fuel pump from somewhere.

i now have all the engine parts. going to stick a youtube video up of it.

found out that the single plug with orange wire from out of the loom connects to a green with black stripe wire, that leads down to the fuel pump. so that is one plug down.

the plug with 2 wires go to the injector/ECU light on the dash.

the single red connector i am still guessing is battery live.

however. my guess is something is not right. the ECU has to have a ignition live somewhere! otherwise how does it know to turn the engine off, when you turn the key to off. ???

so i still think that on the plug with 2 wires, one goes to the injector light, the other goes to an ignition live.

does anybody have the pinouts for a 6F ECU?

 

[Dragon Man]

if needed for anyone else in the future who wishes to do this conversion to the 903cc engine i have some info in this video of the Fiat Cinquecento SX 899 6F ECU wiring loom and sensors!



i hope this helps!

 

[Dragon Man]

sorry i have not updated this, i lost my dad a few days back in an RTA so everything has been put on hold. please can no one comment about it in this thread though.. i want to keep this thread clean for anybody else who wishes to do this project in the future.


found out what the wires are for:

the orange wire is an ignition live
the white with red stripe is a NEGATIVE for the ECU / Injector light on the dashboard (that is wired into an ignition live)
the thick red wire is a battery live.

about the fuel issue.

i will be using a device called a swirl pot (think of it as a mini fuel tank with the high pressure pump in it), that will be fed by the cars original diaphragm pump.
the cinquecento fuel pump will go in this mini fuel tank and pipped in a loop through the throttle body and back into this mini fuel tank.

if you are in to electronics, think of it as a simple capacitor filter feeding a voltage booster.
it takes the pulses from the old fuel pump, and converts it to a constant pressurised stream.

now i know that the fuel tank on a cinq is metal (well it was on mine), so it got me thinking. what if i cut the top out of a cinq's fuel tank that the float / pump screws onto. that way i could use the whole fuel sender unit and pump. i could then weld this onto a smaller fuel can or something like a fridge motor housing (as it has other pipes leading into it) and mount it somewhere under the bonnet out of the way.

i do not really need to make it that way though. i could have just a metal container about the size of a coffee jar with a screw top lid, stick the pump in that and just have 4 pipes leading into this swirl pot.

i'd rather do this than change fuel tanks.

 

[fingers99]

I really don't know why you want to do it that way.

It's ingenious, it may even work, but it's crazily overcomplicated. People do the reverse when they're (foolishly) converting EFI engines to run on carbs or fitting ancient bike engines (with carbs) to (formerly) EFI equipped cars.

Given that you're prepared to take some kind of cutting tool to a petrol tank (there are pretty safe ways of doing this -- but PM me for details if you're stuck, all at your own risk, of course), get a Cinq tank and the pipes from a scrappy, chop out the flange, cut a suitable hole in the other tank, affix flange and pump with steel pop rivets and a decent, fuel resistant, epoxy.

Incidentally, the housing for the Cento pumps incorporates a pretty effective swirl device.

 

[Dragon Man]

thanks. dont worry about fuel tanks i know how to safely deal with them. (i did it with my panda and gas bottles when i made the wood burner)

we will see what happens next. it depends on what i can get hold of. i need to do this as low cost as i can. especially now in a time of crisis.