No fuel pressure on primary bank, dead pump or module....
Discussion
Hi all, i have a 2011 Rapide, came to it today, went to start, it span over with much vigor, started and immediately died, tried again and the same. (The battery is good.)
Ive run the codes and got P115b check fuel system on primary bank, no code on the secondary.
Pulled data, ive got around 2 psi on primary bank and 65psi on secondary. Tried switching the fuel pressure sensors to the other banks and just the same so thats ruled out.
Checked both fuses and all good.
Next plan of action to to gain acces to the top of the tank to check for power, i can hear at least one pump prime.
Does anyone know how to gain access to the top of the tank (before i start breaking clips and swearing...)
Ive run the codes and got P115b check fuel system on primary bank, no code on the secondary.
Pulled data, ive got around 2 psi on primary bank and 65psi on secondary. Tried switching the fuel pressure sensors to the other banks and just the same so thats ruled out.
Checked both fuses and all good.
Next plan of action to to gain acces to the top of the tank to check for power, i can hear at least one pump prime.
Does anyone know how to gain access to the top of the tank (before i start breaking clips and swearing...)
Edited by BGB autosport on Friday 8th December 17:40
Ive managed to access the top of the tank, one of the two pumps is definitely working. The contacts are clean but two have been hot. Next job is to locate the pump driver modules and to switch these over to see if that switches the problem.
Does anyone know where the modules are located on a rapide? I cant work out if they are under/behind the rear seat or accessed from underneath.
If switching is ineffective i'll have to open the tank and pull the pumps so next question does anyone know N alternitive?
Does anyone know where the modules are located on a rapide? I cant work out if they are under/behind the rear seat or accessed from underneath.
If switching is ineffective i'll have to open the tank and pull the pumps so next question does anyone know N alternitive?
Thanks Ridds, yes i found them, tucked away behind the rear wheel arch liner.
I determined there was no power for one of the pumps so pulled the drivers, switched them and no difference.
Started checking the loom and found the ground to be in bad shape, cleared that up and checked the loom through, recconected the drivers and.... i have power at the tank connector but still no pressure on bank 1.
So next plan is to see if it's possible to switch the two pipes at the tank.
Then pull the pumps.
I determined there was no power for one of the pumps so pulled the drivers, switched them and no difference.
Started checking the loom and found the ground to be in bad shape, cleared that up and checked the loom through, recconected the drivers and.... i have power at the tank connector but still no pressure on bank 1.
So next plan is to see if it's possible to switch the two pipes at the tank.
Then pull the pumps.
Edited by BGB autosport on Sunday 10th December 08:24
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