13-06-2019, 08:47 PM
I received the PP2000* (see footer) and on my laptop poked around a bit and now I think I am suffering from low pressure on the common rail.
Using the live data the fuel pressure from the high pressure pump is ~55 bar. As mentioned elsewhere on this forum the ECU doesn't activate the injectors until the pressure is 110+ bar.
A far as I know this could be due to 4 or 5 things.
1. Dodgy High Pressure pump. When these things go wrong do they suddenly give up or what?
2. Dodgy Fuel Pressure Regulator on the HP pump.
Using PP2000 I did an actuator test on this and I hear a click from the solenoid near the ECO but on the pump (where the FPR live) , no click.
I had my Lad cycle the test while I listened to the regulator through a screwdriver handle (for those who don't know press screwdriver tip to FPR body , place ear on handle and listen -
transmits the sound much better). I could hear a faint 'whir ???' but no click as I would expect from what is essentially a solenoid ? - more info required here.
(When cranking the Diesel pressure regulator OCR - was up to 40% - is the regulator a solenoid off/on , or some kind of variable opening device )
3. Dodgy Fuel Pressure Sensor on the common rail feeding incorrect information to the ECU.
I am Certainly getting a reading using the P2K. I suppose if contacts are dirty a high resistance might give a false reading? I cleaned the contacts but no change.
4. Not enough fuel getting to the HP pump.
Low pressure? Check filter etc.
I am definitely getting fuel to HP pump. Surely if so I should see at least a splutter?
5. Leakage back from one or more injectors affecting rail pressure.
No Idea about this. Any thoughts?
Anything else?
I have no faults show up on PP2000 that are relevant that I know of.
Using the live data it appears I am getting a cranking speed of ~190 RPM. Is this normal? The engine cranking speed sounds normal.
One or two other readings:-
ECU is RHY BOSCH EDC15C2 ( at least this is what the diagnostics thinks , Incidentally Software would not read if the 306 is selected but will rad 306R for those familiar with the P2K
model selections)
Battery voltage 12.5 (down to 9,7 when cranking)
supply voltage to sensors ~5.01v
injector voltage 0v - (69.9v when cranking )
Diesel pressure regulator OCR - upto 40% when cranking
--
*For other newbies PP2000 is the Peugeot Planet 2000 diagnostic software and hardware interface for Peugeots (and Citreons - Lexia3) . You can get these on ebay and the like for around £40 and they should give you way more usable information than the generic OnBoardDiagnostic (OBD2) readers. They appear to be hacked versions of official software so its probably very naughty to use them. Research a bit on this forum first as they can be a bugger to install and use on your laptop if not done properly. I had problems on Win7 (in xp sp3 mode) using PP2K , wouldn't work but diagBox no problem. On XP sp3 machine no problems.
Using the live data the fuel pressure from the high pressure pump is ~55 bar. As mentioned elsewhere on this forum the ECU doesn't activate the injectors until the pressure is 110+ bar.
A far as I know this could be due to 4 or 5 things.
1. Dodgy High Pressure pump. When these things go wrong do they suddenly give up or what?
2. Dodgy Fuel Pressure Regulator on the HP pump.
Using PP2000 I did an actuator test on this and I hear a click from the solenoid near the ECO but on the pump (where the FPR live) , no click.
I had my Lad cycle the test while I listened to the regulator through a screwdriver handle (for those who don't know press screwdriver tip to FPR body , place ear on handle and listen -
transmits the sound much better). I could hear a faint 'whir ???' but no click as I would expect from what is essentially a solenoid ? - more info required here.
(When cranking the Diesel pressure regulator OCR - was up to 40% - is the regulator a solenoid off/on , or some kind of variable opening device )
3. Dodgy Fuel Pressure Sensor on the common rail feeding incorrect information to the ECU.
I am Certainly getting a reading using the P2K. I suppose if contacts are dirty a high resistance might give a false reading? I cleaned the contacts but no change.
4. Not enough fuel getting to the HP pump.
Low pressure? Check filter etc.
I am definitely getting fuel to HP pump. Surely if so I should see at least a splutter?
5. Leakage back from one or more injectors affecting rail pressure.
No Idea about this. Any thoughts?
Anything else?
I have no faults show up on PP2000 that are relevant that I know of.
Using the live data it appears I am getting a cranking speed of ~190 RPM. Is this normal? The engine cranking speed sounds normal.
One or two other readings:-
ECU is RHY BOSCH EDC15C2 ( at least this is what the diagnostics thinks , Incidentally Software would not read if the 306 is selected but will rad 306R for those familiar with the P2K
model selections)
Battery voltage 12.5 (down to 9,7 when cranking)
supply voltage to sensors ~5.01v
injector voltage 0v - (69.9v when cranking )
Diesel pressure regulator OCR - upto 40% when cranking
--
*For other newbies PP2000 is the Peugeot Planet 2000 diagnostic software and hardware interface for Peugeots (and Citreons - Lexia3) . You can get these on ebay and the like for around £40 and they should give you way more usable information than the generic OnBoardDiagnostic (OBD2) readers. They appear to be hacked versions of official software so its probably very naughty to use them. Research a bit on this forum first as they can be a bugger to install and use on your laptop if not done properly. I had problems on Win7 (in xp sp3 mode) using PP2K , wouldn't work but diagBox no problem. On XP sp3 machine no problems.