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Discussion Starter · #1 ·
Hi All,

2001 Patrol GU 3.0TD SII.
The wiring plug that connects to EGR Solenoid has about 2-3 strands with corrosion and have broken next to the plug.Have attached image.
As it will not start now and can not drive to auto electrician can this plug be purchased and reconnected as there is plenty or excess from wiring loom.
Any help would be appreciated.

Thanks
TheoGu
 

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Y2KGUII ZD Wgn
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That doesn't normally prevent a DI from starting, just brings up the engine light and a code. I would be checking the ECU for other codes as well.
 

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'14 Y61 ZD30 CRD M/T ST
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Hi All,

2001 Patrol GU 3.0TD SII.
The wiring plug that connects to EGR Solenoid has about 2-3 strands with corrosion and have broken next to the plug.Have attached image.
As it will not start now and can not drive to auto electrician can this plug be purchased and reconnected as there is plenty or excess from wiring loom.
Any help would be appreciated.

Thanks
TheoGu
Not impossible to source a renew replacement connector, but you won’t get it from Nissan so you’d have to do some research and find an alternative source. I’ve done it in the past with some connectors with varying levels of success and a lot of frustration.

Easiest would be to find one from a wreckers. Cut it from the donor harness with ~100mm of wiring and splice it into your harness.
 

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Discussion Starter · #4 ·
Will give it another go.This morning it started and runs on idle for little bit then starts to run rough and then stalls.
Have no engine light or codes showing.Have replaced new fuel filter,primer and water sensor.
 

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Y2KGUII ZD Wgn
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I still think something else is going on here. The EGR is open at idle until 1200rpm at which time it closes until activated under various conditions as we drive, with EGR closed at idle the only things that happen through disconnection is a code and MAFv rises to a bit over 2v.
Disconnect the plug and see what happens.
My 2 cents worth as a 2000 DI owner since new.
 

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Will give it another go.This morning it started and runs on idle for little bit then starts to run rough and then stalls.
Have no engine light or codes showing.Have replaced new fuel filter,primer and water sensor.
Sounds to me like it’s running out of fuel. You sure you don’t have an air leak somewhere in the fuel system?
 

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Y2KGUII ZD Wgn
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Sounds to me like it’s running out of fuel. You sure you don’t have an air leak somewhere in the fuel system?
That is what I have been trying to tell him, something else is going on here and we now learn filter, primer and water sensor changed.
 

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Discussion Starter · #8 ·
Thank you all for responding.
Have been under neath vehicle several times from back to front engine bay and have not been able to find any leaks from metal fittings rubber hoses steel lines or from Carter lift pump itself.
 
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Thank you all for responding.
Have been under neath vehicle several times from back to front engine bay and have not been able to find any leaks from metal fittings rubber hoses steel lines or from Carter lift pump itself.
What other mods do you have?
 

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'14 Y61 ZD30 CRD M/T ST
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Thank you all for responding.
Have been under neath vehicle several times from back to front engine bay and have not been able to find any leaks from metal fittings rubber hoses steel lines or from Carter lift pump itself.
Air could get in somewhere without fuel getting out. @geeyoutoo can give you a detailed description on how to check for air in the fuel system on a Di by using some clear hose. I have a CRD so not familiar with the exact process.
 

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Y2KGUII ZD Wgn
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Where is your carter lift pump fitted and is it a 4600 or 4601? If you have at the back then you will see any leaks quite clearly, if the pump is mounted under bonnet then it could be sucking air from somewhere near the back. At Idle a 4600 will put out around 4psi fuel pressure, a 4601 will put out around 12psi, so leaks are usually easily seen.
Fit a section of clear hose between the fuel filter outlet and the inlet banjo on the fuel pump, run the pump to see what happens, with air, to bleed the pump crack the inlet banjo, tighten then crack the return line banjo then after fuel runs, tighten banjo then try to start.
 

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What other mods do you have?
Hi @geeyoutoo , he has remap, exhaust 3inch and cross country IC and snow performance water /methanol injection at Throttle body and 4601 lift pump, Icv% are good idles just over 52-55% and low 40 ish with out lift pump. No codes which is strange not even a 703 . I’m going to have a look at hoses and that again as another set of eyes 👀 doesn’t hurt, after all I did 90% of lift pump install for him. Clear hose is next thing to see how much air is being sucked in as running lift pump without engine has shown no leaks anywhere. Fuel pressure is good also
 

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Discussion Starter · #14 ·
Hi Ross,
Yesterday I replaced the carter 4601 lift pump which is mounted at rear with a brand new one in case it was Faulty.
The vehicle has always cold started first pop and will hold idle and will reach operating temps on idle If you drive off it will then start to splatter and stall and will then not start.
Again will cold start next day and idle till you switch off and wait a few minutes then engine will not start.
Now with the new carter lift pump it will start for 2-3 times before spattering less and less then stalling.
Today I have taken IC off and checked spill lines and around injector pump / lines again and can not see any leaks.
Will get some clear hose and check for air in system.
 

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Y2KGUII ZD Wgn
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Hi Ross,
Yesterday I replaced the carter 4601 lift pump which is mounted at rear with a brand new one in case it was Faulty.
The vehicle has always cold started first pop and will hold idle and will reach operating temps on idle If you drive off it will then start to splatter and stall and will then not start.
Again will cold start next day and idle till you switch off and wait a few minutes then engine will not start.
Now with the new carter lift pump it will start for 2-3 times before spattering less and less then stalling.
Today I have taken IC off and checked spill lines and around injector pump / lines again and can not see any leaks.
Will get some clear hose and check for air in system.
Hi Mate, if you have the IC off then remove glowplugs and crank with a fully charged battery to make sure you have plenty of fuel mist coming out through the GP holes. I'm getting suspicious of pump at this time, hope it isn't!
 

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I’m thinking the pump internally is sucking in air when pressing fuel .?
 

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Looking at vp44 manual, you are right, doesn’t look possible of air to build up internally unless it has come from fuel lines into pump
 
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Discussion Starter · #19 ·
Replaced hose from fuel filter to pump with clear hose.Started up and once clear hose filled with fuel no air bubbles.Started up again no bubbles in clear hose but as mentioned before will idle and then splutter and stall.It seems on warmer days it will start to splutter a lot quicker then on cold days.
The spluttering is getting less and less but it still ends up stalling the engine.
I noticed the Provent 200 catch can filter had white paste
see attached image.
Will take IC off and check mist from GP.
 

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Not uncommon for catch can to have some moisture in it, especially if humidity has been high, I quite often get a small amount of water in the oil when I drain my catch can.
 
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