Come on then, tester, what is this connection?

[Jev88]

Hello fellow Funsterista's.

1999 Ducato 2.5TDI .
What is this blue spade connector for right next to where throttle cable passes at front middle of engine very near fuel pump.
I thought it might be the 2nd temperature sender but temp gauge reads with it disconnected.
I won't tell you why I want to know just yet as might be barking up wrong tree but I am very interested to know!!
I am away from a decent computer so can't look up the nice exploded parts diagrams......

 

[pappajohn]

It aftermarket whatever it is.
Manufacturer won't fit that kind of crimp spade to their wiring harness.

 

[tofo]

Lead to switch to stop the fuel
And hinder the tea leaves

Or a dribbler switch lead

 

[MisterB]

You have already worked it out. Its a blue spade connector. You will of course need a blue spade to connect it to ...

 

[EX51SSS]

I don't even know why I opened this thread. I know absolutely nothing about the topic

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[Silver-Fox]

I can see a crimped female spade connector but not it’s male counterpart.

What kind of guessing game is this ??

 

[andy63]

A blue spade connector that is likely to be an aftermarket project by a previous owner as John has said.. surley the important thing is to stick a meter on it and find out if it has power at any time ... and trace it to source if possible..
Andy

 

[tonyidle]

It aftermarket whatever it is.
Manufacturer won't fit that kind of crimp spade to their wiring harness.

Nor should anyone else . But they do.

 

[Jev88]

Thanks for the guidance people. The part is integral to the fuel pump. I will borrow a multimeter tomorrow and see if it is live.
Interestingly, removing it helps to reset my faulty immobiliser!

 

[Allanm]

The immobiliser ( factory fit) is hidden away under a tamperproof cover in the fuel pump close to where that spade connector is. The thread with the nut on it should have a male spade connector on which the blue spade connector should fit.
I think it’s part of the cold start system, maybe a cold start idle advance valve.

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[Jev88]

The immobiliser ( factory fit) is hidden away under a tamperproof cover in the fuel pump close to where that spade connector is. The thread with the nut on it should have a male spade connector on which the blue spade connector should fit.
I think it’s part of the cold start system, maybe a cold start idle advance valve.

Hi, yes I am aware of the nearby immobiliser circuitry. I am holding back digging the PCB out to access the positive power supply to bypass the immobiliser triple wire connector. Just not sure what this additional spade connector does? Removing it helps me reset my immobiliser quicker than waiting 15 minutes every time I turn engine off as currently happens more often than not. Hence I am trying to work out what connection this single wire has to the immobiliser system ? Genuinely curious to.solve immobiliser without just digging it out with a chisel!

 

[Jev88]

Cold start advance seems best guess?
I measured a very very small voltage at the spade connector with engine running or just ignition on. But so small that I can't rule out being at the limits of the lowest setting on my multimeter. The strange thing is the immobiliser resets more often and quicker with this spade disconnected?

Looks like I need to be brave later this week and try to lever out the immobiliser circuit board on the fuel pump that is already exposed but not "freed" yet as it scares me breaking the PCB and not finding the connector behind it.