Citroen c2 starting problems please help!

[Adamk4199]

Well we have removed the blackbox from the car and changed the fuel pump relay still nothing so I think it's the under bonnet fuse box

[GreenV8S]

Do you have fuel pressure?
Is the fuel pump running its normal prime cycle when you switch on?
Are you getting power to the pump?
Do you get fuel pressure when you power the pump directly?
Does the tacho show cranking rpm (typically a couple of hundred rpm) when you try to start it? Does it normally show that?
Do you have equipment to test the injection and ignition systems and know how to use it?

[Adamk4199]

I've had the pump out and tested it on the battery and it's fully operational. I've also checked the voltage going to the pump. There's a constant feed going to the pump so no reason for it not to start up. Not fuel is pressurising at the engine meaning the feed has been cut off for it.

[Adamk4199]

Upon cranking all I get is the cranking sound. Not sparking at all and the window wiper stalk has also stopped working as well as no heater blow when you turn the engine to on.

[GreenV8S]

You didn't answer all my previous questions, but the extra symptoms you're adding now suggest a widespread electrical failure. If that was me, I'd be checking for a fault on the switched ignition supply. But I'd also check the other things I suggested previously.

[Adamk4199]

The fuel pump has no pressure and is not running it's normal prime cycle when the car is switched on. The power to the pump is constant and upon starting the relay is doing it's job but will not send fuel to the car for starting at all. The tacho barely hits 1000 rpm when I try and start the car. I don't have any equipment to test the injection or ignition systems however my dad is a mechanic and says the car is mechanically sound.

I am going to change the under bonnet fuse box today to see if it could be that. Can you tell me more about the ignition switch and it's location ect

[E-bmw]

Adamk4199 said:

Can you tell me more about the ignition switch and it's location ect

It is the one you put the key in to start the car.

[Adamk4199]

replaced the fues box under the bonnet and also replaced the coil pack with a brand new one. it is still pulling up the same three codes on the obd which are as follows P0135, P0351 & P0352

[GreenV8S]

Adamk4199 said:

The fuel pump has no pressure and is not running it's normal prime cycle when the car is switched on.

That seems to be the most fundamental symptom and I'd start there.

Given that the pump is not priming, you may have either an electrical problem in the pump circuit, or a failed pump. If you see 12V across the pump but it doesn't run, you have a failed pump. If you don't see 12V across it, you have an electrical problem.

In my experience fuel pumps are typically connected to switched ignition on one side and grounded via a relay controlled by the ECU on the other side. Does that fit what you see? Alternatively you may find the relay controls the positive supply to the pump and the other side is permanently grounded. You need to know which arrangement it is to diagnose an electrical problem.

[Adamk4199]

the fuel is priming to the engine however just nothing but the cranking sound when the key is turned. the same exact three codes keep coming up and nothing else. even after a brand new coil pack has been fitted to the car it is still remaining that there is an issue with it. I have had a voltage reader on the cable on the battery and so on and there seems to be absolutely no issue what so ever there. could it be the ECU given that it isint even recognising the new part on the car or could it be the 02 sensor cutting out the car and stopping it from starting

[GreenV8S]

Adamk4199 said:

the fuel is priming to the engine

Adamk4199 said:

The fuel pump has no pressure and is not running it's normal prime cycle when the car is switched on.

I'm confused. Do you have pressure in the fuel rail, or not?

[Adamk4199]

yes it is there, I am sorry for not explaining the issue properly. the fuel is there now yes it is primed but as said faults p0351 p0352 and p0135 remain even after a brand new coil pack

[GreenV8S]

Do you have a fuel pressure gauge, NOID lamp and spark tester, and know how to use them? If not, this would be a sensible time to call in a competent mechanic. Since it's a complete non-starter it should be relatively easy for an experienced mechanic to diagnose, but for a total novice that is quite a tall order.

[Allways4ever]

Hello my c2vtr has starting problems it's saying press break pedal but I am and it's not sensoring I'm pressing break down please help !