2.2 cdi sprinter 2003 211 mwb

[amacdonald]

stil having problems with the starting will start fine off bump start but not off the key plenty power in battery will run over and over but no hint off starting as i said before it is still reving over the 3000 rpm when bump started so it is not in limp mode . any help would be great
cheers

[iluvjesus]

when you turn the key, does it crank?

[iluvjesus]

Most likely it is an ignition switch problem. I am not sure if you use an EIS in W901, as it would be very expensive. The usual ignition should be ok to DIY to replace, but I don't have the workshop manual. I have attached some info for other classes for your reference.

[amacdonald]

yes it does crank no problem

[amacdonald]

I have just noticed after I have tried to start with key then turn key off there is a noise coming from the dash somewhere like vibrating cracking noise ???

[iluvjesus]

I just want to make sure I understand the problem. Do you mean?

when you crank the car with the key, the car will not start,

but when you jump it with a different battery, it will start with your key?

[amacdonald]

no its with the same battery . a new one

[iluvjesus]

oic, so no matter you are using old or new battery, your engine would crank, but it won't start? only sometimes it will start, am I right?

If that is the case, the most likely culprit is the crankshaft position sensor, it is a cheap and easy DIY in sedan, not sure about yours.

[amacdonald]

It has started with key 2 times since the problem started . this was within 2 or 3 mins of stopping it. i dont know if this was the reason or it was something else
cheers

[iluvjesus]

Sorry, my English is not very good, I don't understand what you mean again. You mean you started the car for 2-3min and it stalled? If yes, the CPS most likely.