What is a boost pack? Jump cables?

 

No it's a 12/24v jump starter. Call it a boost pack.

 

If you can start the engine with another power source, then it cant be sensor issue.

 

I think it has something to do with your key power connector. The same part where you put your keys in when you try to start your engine. It probably doesnt send good enough power to the rest of the car to work well.

 

Whatever has burned your car starter, probably ate your key power connector as well.

 

The starter gets a signal every time the ignition is turned ive already checked all that it never fails. Just doesn't fire up like its getting no fuel through. Sometimes starts first try sometimes needs a jump but always the same turning over for a minute first.

 

It requires to turn over nearly a minute even with boost pack strapped on?

 

Yes sometimes it takes a while even being jumped hence me thinking sensor issue or something

 

Have someone help you in the next thing. Remove one of the fuel lines that goes to your injector and have your friend crank the engine. See if the fuel line squirts. Or when it squirts. Right from the beginning...or close to the moment when it wants to start.

If it squirts right from the beginning all the time regardless how much you crank, then it cant be sensor issue. If it doesnt squirt at all, then you can move to the next step.

 

No fuel it just turns over until its ready to fire, it sprays just before it wants to start

 

Then the sensor problem is very likely. It could be not just crankshaft sensor, but camshaft sensor too if you have it. Camshaft sensor also checks if crankshaft and camshaft is in sync.

 

Ahh thanks for the info. Is the crank sensor easy enough to get to I haven't looked yet

 

New update. Its now got EML randomly coming on, hill assist an esp unavailable at random not together with EML light, and goes into limp mode. Resetting key will clear all for temp fix. Fuel consumption has probably more than doubled and it smokes like a trooper. Any clues as I'm about to drop an excavator bucket on it I've had enough.

 

The only reason I can think off with so many unrelated system going bonkers at once...is electrical power grounding problem. I think it might help to tie a cable between battery negative end with a metal pole of some kind outside of the car. See if it makes any difference.

 

Run diagnostics with Lexia 3 or equal device.
Helps to know colour of smoke and smell.

 

No battery tests, cable tests or anything seem to make any difference I have the snap on solus legend system myself for work I've ran diagnostic ls on it and it comes up with nothing till EML comes on then P0234 comes up. I've replaced boost solenoid and pressure sensor still no joy. Clears with reader and still intermittent, sometimes 10 times in 2 mins sometimes not for hours. I've tested cables and plugs all test ok I really don't know what else to say unless it's a poor injector, that's the next thing to replace logically, maybe overfeeding as doesn't know what mix it's actually got due to a faulty nozzle or something?

 

Put an empty water bottle on the end of return fuel line from each injector separately and have the engine run for 5 minutes. See how much fuel gathers up in it. If the volumes are hugely different or alot...then you can talk about bad injectors.

 

Sometimes it does black smoke sometimes its more whit. Doesn't lose any coolant or oil it's right on the money each time it's checked. All I can say is you can't touch the throttle at all now, it smokes so bad it has to be dabbed on and off to get anywhere.

 

I think the CCV may be in play here, check how much oil is in the intake walls, if you find some, I think it has pooled in the intercooler or might have restricted flow.

This is summary, just make sure we are same page, so-to-speak,
P0234 is Engine overboost.
Possible components involved are (which, from reading your posts, appears you have tried swapping to new and tested wiring)
(1) Variable nozzle turbine motor
(2) MAP sensor

Can I get the engine designation code, positions 6,7,8 of the VIN. Just want to see what I can find out about the engine and be sure it matches.

 

10.6v will not start your van , anything below 12v and you will struggle, I've got a 3 litre diesel Boxer and Jaguar diesel, none of these will start with that voltage. If it starts with a jump, you may have a battery drain/short somewhere.