Hi
I'm new to this forum.
I have recently bought a VW Passat 3B 1999, with a PD115 AJM motor. The car is chipped, from a previous owner, no idea how this was done.
The problem i'm having is that it is almost impossible to start without diesel start when it is cold.
When it's running it seems fine however.
I have checked a lot of things, but I'm getting at a point where I'm a bit lost.
The following has been checked:
Timing belt is new and aligned with alignment tools (previous belt was also in alignment)
However when looking in vcds it seems off. -5 BTDC.
Coolant sensor is new.
Glow plugs seems new, but have been checked, power to these are ok. I have even adjusted the preglow to be sure that this is not the problem.
The in tank fuel pump have been checked, and is right now power constantly with the ignition (the previous owner had put it with the driving lights :S )
This is not a permanent solution, but i cannot see this would change anything other than it running less before startup.
There is fuel to a new fuel filter, and there is fuel all the way to the IP pump.
When it is sprayed with diesel start it will fire up in some seconds, otherwise it might fire up after 3-50 seconds if lucky.
I have attached some logs, in hope that these will help finding the problem.
It looks like the MAF sensor is off, perhaps because of the tuning, perhaps because of a bad MAF?
But in my head this will not affect the startup?
I have checked the shudder valve by the egr and has temporaly disabled it, so it is always open, the EGR is new.
I hope somebody has some fresh thoughts on this, as I feel a bit stuck.
I'm thinking perhaps bad o-rings at the injectors or bad injectors. or IP pump?
But why does it run okay after startup?
No fault codes in vcds engine wise.
Thanks in advance and best regards
Joachim
I hope I have pasted the pictures correct
https://ibb.co/itr8HG
https://ibb.co/nrHhcG
https://ibb.co/nGyAWb
https://ibb.co/d1B8HG
https://ibb.co/dYpHBb
I'm new to this forum.
I have recently bought a VW Passat 3B 1999, with a PD115 AJM motor. The car is chipped, from a previous owner, no idea how this was done.
The problem i'm having is that it is almost impossible to start without diesel start when it is cold.
When it's running it seems fine however.
I have checked a lot of things, but I'm getting at a point where I'm a bit lost.
The following has been checked:
Timing belt is new and aligned with alignment tools (previous belt was also in alignment)
However when looking in vcds it seems off. -5 BTDC.
Coolant sensor is new.
Glow plugs seems new, but have been checked, power to these are ok. I have even adjusted the preglow to be sure that this is not the problem.
The in tank fuel pump have been checked, and is right now power constantly with the ignition (the previous owner had put it with the driving lights :S )
This is not a permanent solution, but i cannot see this would change anything other than it running less before startup.
There is fuel to a new fuel filter, and there is fuel all the way to the IP pump.
When it is sprayed with diesel start it will fire up in some seconds, otherwise it might fire up after 3-50 seconds if lucky.
I have attached some logs, in hope that these will help finding the problem.
It looks like the MAF sensor is off, perhaps because of the tuning, perhaps because of a bad MAF?
But in my head this will not affect the startup?
I have checked the shudder valve by the egr and has temporaly disabled it, so it is always open, the EGR is new.
I hope somebody has some fresh thoughts on this, as I feel a bit stuck.
I'm thinking perhaps bad o-rings at the injectors or bad injectors. or IP pump?
But why does it run okay after startup?
No fault codes in vcds engine wise.
Thanks in advance and best regards
Joachim
I hope I have pasted the pictures correct
https://ibb.co/itr8HG
https://ibb.co/nrHhcG
https://ibb.co/nGyAWb
https://ibb.co/d1B8HG
https://ibb.co/dYpHBb
Last edited:
