Sounds like you've finally got to the bottom of this starting problem. P1220 is a code associated with the ECM on the Bosch VP44 diesel pump . You say you've had this repaired ? Critical error .... Injection timing?

 

hi
Thanks for the reply.
The ecu was repaired as was faulty and carries a lifetime guarantee, I have read that the crankshaft sensor can make the pump throw this fault. As its electronic it cannot read the mechanical timing? can it?

 

Ok let's not get into playing parts darts . Fuel quantity adjustment control - malfunction in the fuel quantity adjuster . If you park car facing down hill does it then make a difference to the starting ?

 

Record some live data and check that the pump speed is half the engine RPM speed.

 

hi
Pump speed is half engine rpm.
Park downhill and it will not start park uphill does. will start when heater sender out and glows on for 15 seconds runs far better with the sender out.
I have put a switch in I also think an injector is going (miss at 1800rpm and white smoke when cold turn the sender of no smoke no miss)
new starter new battery injector seals spill off pipes cleaned the swirl valves and inlets changed the filter case and filter
white smoke on start-up produces white smoke while turning over retimed and then retimed 10 times interestingly when I had the timing out still ran!
does 40 mpg on average more on a run sits at 70 all day not a miss no smoke

 

also when warm use the switch to put the glows on starts first flick

 

I think you've got to get that injector sorted before doing anything else other wise your going round in circles trying to cure the symptom & not the fault . Still say you shouldn't need that switch to manually put the glow plugs on . My old Dti had worn out glow plugs but always fired as soon as you put the key in wether it was warm , cold , boiling or freezing . Did you check the fuel pressure ?

 

hi
Thanks again how do you check the fuel pressure?

 

Can you not do this on Opcom ?

 

I shall have a look thankyou what should it be?

 

Yes you can read the fuel pressure In opcom.

 

Hi
Sorry to be a dimbo but where in opcom is the reading? I have looked but cannot see anything at the level Haynes say

 

Should be In parameters

 

Fuel pressure cannot be measured with opcom on the PSG5 pump or PSG16

 

hi
thanks for the replies however I must have a cheap opcom. no parameter tite got measuring bloks

 

I think he meant measuring blocks. Either way it doesnt list fuel pressure - ive checked!

 

Sorry guys, just a thought.

 

Here are all possibilites for PSG5 - Can you confirm its PSG5 you have

[MEASURING BLOCK DATA]
System Voltage,[V],
Accelerator Position Sensor Signal,[%]
Idle Switch,Inactive 0V,Active
Mass Air Flow Sensor[mg/strk]
Barometer Sensor,[bar]
Boost Pressure Command,[bar]
Boost Pressure,[bar]
Intake Air Temperature,[°C]
Coolant Temperature,[°C]
Engine Oil Temperatue,[°C]
Fuel Temperature,[°C]
Brake Switch 1,Inactive,Active
Brake Switch 2,Inactive 12V,Active 0V
Clutch Switch,Inactive,Active
A/C Information Switch (Air Conditioning)Inactive 0V,Active 12V
Fuel Cutoff ValveInactive,Active
Start of Delivery[°CA]
Desired Injection Start[°CA]
Actual Injection Start,[°CA]
Desired Injection Quantity,[mg/strk]
Injection Quantity,[mg/strk]
Pulse Ratio Boost Pressure Solenoid Valve,[%]
EGR Command (Exhaust-Gas Recirculation Command),[mg/strk]
EGR Pulse Ratio (Exhaust Gas Recirculation),[%]
Swirl Level Control Solenoid Valve Pulse Ratio,[%]
Desired Engine Idle Speed,[RPM]
Engine Speed,[RPM],
Pump Speed,[RPM]
Diagnosis Glow Time Relay,Active,Inactive,
Glow Time Relay,Inactive 12V,Active 0V
Key (I) (Set/Accelerate),Inactive,Active
Key (R) (Set/Decelerate),Inactive,Active
Key (O) (Switch Off),Inactive,Active
Vehicle Speed,[km/h]
Vehicle Speed Command,[km/h]
A/C Relay (Air Conditioning),Inactive 12V,Active 0V
Telltale (Check Light),Off 12V,On 0V
Glow Time Telltale,Off 12V,On 0V
High Pressure Diagnosis 1,[Counts]
High Pressure Diagnosis 2,[Counts]
Immobiliser Function Programmed,Yes,No
Security Wait Time,Inactive,21:20:00,10:40:00,5:20:00,2:40:00,1:20:00,0:40:00,0:20:00,0:10:00,0:00:10,Invalid

 

Thanks for that mark152.