[Engine] No steady 12v on solenoid HPFP

[Noefkie]

Hi all,

I installed a new Delphi 1920AT Lucas high pressure fuel pump on my Berlingo 1.9D from 2005.
Installation went OK.

Now I have a problem with the power supply on the solenoid.
(weird because bearings where the reason to change the pump)

From one pin of the plug that comes from the car I have a changing voltage from 10 to 12,5 V
The plug has 3 pins. Only one pin gives 12V normally, but steady, not like I have now.

When I connect a cable directly from battery to the solenoid you hear the solenoid clicking and the car starts. But when I connect a cable from the pin with changing voltage to the solenoid the car doesn't start. 

When I follow the cables from the plug, they go to a another plug with 4 wires that is going into a sort of box, connected to the frame in front of the car on the right side)

I don't know what to do now. Ant tips?

Thanks for reading and I hope someone responds!

[Multispacer]

Hi all,

I installed a new Delphi 1920AT Lucas high pressure fuel pump on my Berlingo 1.9D from 2005.
Installation went OK.

Now I have a problem with the power supply on the solenoid.
(weird because bearings where the reason to change the pump)

From one pin of the plug that comes from the car I have a changing voltage from 10 to 12,5 V
The plug has 3 pins. Only one pin gives 12V normally, but steady, not like I have now.

When I connect a cable directly from battery to the solenoid you hear the solenoid clicking and the car starts. But when I connect a cable from the pin with changing voltage to the solenoid the car doesn't start. 

When I follow the cables from the plug, they go to a another plug with 4 wires that is going into a sort of box, connected to the frame in front of the car on the right side)

I don't know what to do now. Ant tips?

Thanks for reading and I hope someone responds!

I don't know if this is the case with your fuel pump but there are some threads on the forum that state that some [all?] of the fuel pumps require 'coding' to the ECU after replacement to get them to work correctly. This may be the case with your especially as you state that you can get the vehicle to run by running a cable directly from the battery?

[Noefkie]

Hi all,

I installed a new Delphi 1920AT Lucas high pressure fuel pump on my Berlingo 1.9D from 2005.
Installation went OK.

Now I have a problem with the power supply on the solenoid.
(weird because bearings where the reason to change the pump)

From one pin of the plug that comes from the car I have a changing voltage from 10 to 12,5 V
The plug has 3 pins. Only one pin gives 12V normally, but steady, not like I have now.

When I connect a cable directly from battery to the solenoid you hear the solenoid clicking and the car starts. But when I connect a cable from the pin with changing voltage to the solenoid the car doesn't start. 

When I follow the cables from the plug, they go to a another plug with 4 wires that is going into a sort of box, connected to the frame in front of the car on the right side)

I don't know what to do now. Ant tips?

Thanks for reading and I hope someone responds!

I don't know if this is the case with your fuel pump but there are some threads on the forum that state that some [all?] of the fuel pumps require 'coding' to the ECU after replacement to get them to work correctly. This may be the case with your especially as you state that you can get the vehicle to run by running a cable directly from the battery?

Yes, It runs directly from the battery. But for me it seems pretty weird that suddenly the power supply gives a changing voltage on the pin in the plug that should give 12v steady.
How ´does the power supply knows´ that HPFP is changed??

[Multispacer]

Hi all,

I installed a new Delphi 1920AT Lucas high pressure fuel pump on my Berlingo 1.9D from 2005.
Installation went OK.

Now I have a problem with the power supply on the solenoid.
(weird because bearings where the reason to change the pump)

From one pin of the plug that comes from the car I have a changing voltage from 10 to 12,5 V
The plug has 3 pins. Only one pin gives 12V normally, but steady, not like I have now.

When I connect a cable directly from battery to the solenoid you hear the solenoid clicking and the car starts. But when I connect a cable from the pin with changing voltage to the solenoid the car doesn't start. 

When I follow the cables from the plug, they go to a another plug with 4 wires that is going into a sort of box, connected to the frame in front of the car on the right side)

I don't know what to do now. Ant tips?

Thanks for reading and I hope someone responds!

I don't know if this is the case with your fuel pump but there are some threads on the forum that state that some [all?] of the fuel pumps require 'coding' to the ECU after replacement to get them to work correctly. This may be the case with your especially as you state that you can get the vehicle to run by running a cable directly from the battery?

Yes, It runs directly from the battery. But for me it seems pretty weird that suddenly the power supply gives a changing voltage on the pin in the plug that should give 12v steady.
How ´does the power supply knows´ that HPFP is changed??

Yes, I do admit it sounds strange but I'm only reporting what other forum members have stated in the past [do a search on fuel pump, and then check posts regarding M49/M59 models] It was stated that fuel pumps have to be coded to the ECU as it was all part of the immobiliser system, so it may be that the ECU is not instructing the supply of the correct voltage to the new fuel pump as it doesn't recognise it? Hopefully someone who has the same model as your vehicle and has had fuel pump issues can give a definitive answer? 
It might be worth searching online for for fuel pump issues after replacement on any Peugeot/Citroen group vehicles that had the 1.9D engine fitted as it would be the same system and you may find find answers via that search? Hope you manage to get it sorted.