Solverprob
Member
Hi
New to forum. Bought a 2007 D40 for my kids after forgetting I advised against it based on problems on websites. Forgetting that - I have always been a believer that the "problems" are solved by checking the simple things.
This website has been both helpful and confusing. The amount of "new injectors" and "injector pumps" is scary. Particularly when they did not solve the problem. I bought a hard driven ex-minesite ute.
First problem - no 4WD. Followed the manual right down to checking ECU readings. Replaced neutral safety switch etc. Checked transfer relays etc. Final manual diagnosis "continuity in wiring harness". Have no doubt that if this went to Nissan that would be result. Last minute "fluke" result... The transfer relays have multiple pins. One of the female pins in the harness was a little loose. Squeezed in with pliers and full 4WD - no problem since. Simple in the end but over 60 hours to eliminate and detect.
Second problem - limp mode- reset fuel learning and gone.
Third problem- Loss of power and black smoke- intermittent sometimes. Changed turbo boost control solenoid. No help. Manual was incorrect in terms of different suction working. New solenoid did exactly the same as old one. Had already replaced 2 vacuum hoses one of which was cracked. There is a 3rd suction hose down behind the others which is harder to find. That was cracked as well. That problem solved.
Real difficulty starting. Lots of cranking and finally start with absolute plumes of black smoke. Pump balloon soft. Seems to be losing diesel pressure but overfuelling at same time. ERG blanked. Replaced fuel hoses, filter and can't find any leaks even under pressure. Once vehicle is started runs absolutely fine. Good starting for 4 hours then back to bad. Replaced suction control valve (by the way it was "sticky". A bit of wet and dry sandpaper and it was as good as gold. Still replaced just in case.). No help. Now suspect that it is the pressure control valve leaking pressure.
No fault codes.
To start this it requires foot down on throttle and winding the motor for a long time when the starter motor is doing little work as the motor tries to start ..nnnnnnnng...nnnnnnnnnnnnnng............nnnnnnnnnnnnnnnnnnnnng Sound effects.
In hindsight all of the problems have been "simple"
I haven't "blanked" the pressure relief valve to eliminate that.
Once running- lots of power- no dramas - It has never been good on economy - consistently around 13l per 100km. Has new glow plugs. Another waste of money attempting to solve a problem.
Vehicle has done 240,000km but new head 220,000km. Little discernible bore wear etc.
New to forum. Bought a 2007 D40 for my kids after forgetting I advised against it based on problems on websites. Forgetting that - I have always been a believer that the "problems" are solved by checking the simple things.
This website has been both helpful and confusing. The amount of "new injectors" and "injector pumps" is scary. Particularly when they did not solve the problem. I bought a hard driven ex-minesite ute.
First problem - no 4WD. Followed the manual right down to checking ECU readings. Replaced neutral safety switch etc. Checked transfer relays etc. Final manual diagnosis "continuity in wiring harness". Have no doubt that if this went to Nissan that would be result. Last minute "fluke" result... The transfer relays have multiple pins. One of the female pins in the harness was a little loose. Squeezed in with pliers and full 4WD - no problem since. Simple in the end but over 60 hours to eliminate and detect.
Second problem - limp mode- reset fuel learning and gone.
Third problem- Loss of power and black smoke- intermittent sometimes. Changed turbo boost control solenoid. No help. Manual was incorrect in terms of different suction working. New solenoid did exactly the same as old one. Had already replaced 2 vacuum hoses one of which was cracked. There is a 3rd suction hose down behind the others which is harder to find. That was cracked as well. That problem solved.
Real difficulty starting. Lots of cranking and finally start with absolute plumes of black smoke. Pump balloon soft. Seems to be losing diesel pressure but overfuelling at same time. ERG blanked. Replaced fuel hoses, filter and can't find any leaks even under pressure. Once vehicle is started runs absolutely fine. Good starting for 4 hours then back to bad. Replaced suction control valve (by the way it was "sticky". A bit of wet and dry sandpaper and it was as good as gold. Still replaced just in case.). No help. Now suspect that it is the pressure control valve leaking pressure.
No fault codes.
To start this it requires foot down on throttle and winding the motor for a long time when the starter motor is doing little work as the motor tries to start ..nnnnnnnng...nnnnnnnnnnnnnng............nnnnnnnnnnnnnnnnnnnnng Sound effects.
In hindsight all of the problems have been "simple"
I haven't "blanked" the pressure relief valve to eliminate that.
Once running- lots of power- no dramas - It has never been good on economy - consistently around 13l per 100km. Has new glow plugs. Another waste of money attempting to solve a problem.
Vehicle has done 240,000km but new head 220,000km. Little discernible bore wear etc.