Sprinter 311 CDI Cutting Out

[andysprinter]

Hi Everyone,
I have a huge problem with my sprinter. It keeps cutting out on me. When it does so,sometimes it starts straight away,other times i need recovering. I have had a replacement ECU,Fuseboard,Wiring Loom from ECU to Engine,Ignition Module all to no avail. The garage i take it to i trust as i have known the owner for 15 years. When he plugs it in the reading is " Capacitor 1 under voltage". He believes it is an electrical problem but cant quite get to the bottom of it. Today im told it could be 1 wire from the ecu to the dash that when is cut the reading fault is the same.
Can anyone shed any light on this whatsoever,as i run a small business and as im sure everyone is aware , the economic climate isnt that good!!

Any help or idea would be most helpful..
Andy

 

[Xtractorfan]

Did you replace the CPS ?

 

[BlackC55]

You need to have it code read with a Star as some diagnostic readers will not show up all codes.

 

[andysprinter]

Thanks for the replies!!
It has been read with a star machine.

What is the cps?
Andy

 

[shayes]

Crankshaft Position Sensor

Many a thread on this culprit from Malcolm.

 

[television]

the CPS fails most often when the engine is warm / hot, then restart some 20 mins or so later, sometimes it will fail all together. the engine will crank, but not fire up.

£47 from a bosch service center

 

[Autofix]

That sounds like the stereotypical symptoms of an injector fault. Did you have a leak off test done?

 

[andysprinter]

Thanks for all the replies/suggestions. Deffo not the injectors...had all 4 changed in Jan. CPS been tested..not that either. Changed a 2.5mm wire from behind the dash today that seems to have been building resistance.
Every sensor/valve seems to be ok and narrowed things down to this wire!!

Let you know...
Andy

 

[surlyoldbill]

Thanks for all the replies/suggestions. Deffo not the injectors...had all 4 changed in Jan. CPS been tested..not that either. Changed a 2.5mm wire from behind the dash today that seems to have been building resistance.
Every sensor/valve seems to be ok and narrowed things down to this wire!!

Let you know...
Andy

Can you share details about WHICH wire it was? Like, what it was connected to, color, location, etc.

I have been having the same problem, and would like to find a solution.

 

[tomharland]

Sprinter electrical problem

Hi

Has anyone identified this wire, its significance and colour?
cheers
Tom

 

[Bonehead]

andysprinter did you ever get to the route of this problem? I am having the exact same issue and not sure what to do.