ZD30 engines

Quote:

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Originally Posted by Captain_Rightfoot

So is that the key? The wastgate is electronically controlled on the nissans? So if the MAF doesn't work it overboosts? The wastegate on the TD5 is not electronically controlled, right?

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Not sure on the TD5 as I have never had the oportunity to nose around the system on them and I dont carry much for them yet, but that is changing.
It depends on the programming of the ECU and the sensors employed and everyone does it different. With the advent of electronics in diesels, controlling the wastegate electronically becomes a critical factor in maintaining engine performance and economy. Some just dont get it right.....

Quote:

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Originally Posted by Captain_Rightfoot

So is that the key? The wastgate is electronically controlled on the nissans? So if the MAF doesn't work it overboosts? The wastegate on the TD5 is not electronically controlled, right?

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The ZD30's I've driven (pathfinders/terranos) are not wastegated, they have a variable vane turbo.
The exhaust vane position on these is controlled by the ECU (via a vacuum valve and actuator).

Quote:

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Originally Posted by Dougal

I was suspicious of the MAF in my nissan shopping basket, so I was able to find a FSM on the net which detailed the simple tests to check for correct operation.

It was as simple as sticking a multimeter on the correct wire (there are 5, it's obvious when you've got the wrong one), read the volts at warm idle and again at 2000rpm with no load.

To get a good voltage reading without stripping the wires, I just poke a pin into the connector alongside the wire, hook my multimeter jumper wires onto it.
In my case the values came out perfect. One of the reading was supposed to be in the range 0.7-1.1 volts, it was 0.9 volts. The other was also smack in the middle of the intended range.

Easy to check and worth doing if you can find the reference figures.

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mate, if you have the web link or the details, I would love to get hold of them. I am about to buy a bunch of these from Brunswick Diesels here and send them back to my Sydney branch. Someone at HO has sourced an ECU and we want to run them up on the dyno to check them. As we buy them with the MAF, they need to be fully checked out and either tagged for service secondhand, core parts or for remanufacture as long engines.
Cheers

Andrew

Ok, so the TD5 has a physical limiter on the wastegate itself, and then the ecu detects overboost and can cut fueling if it detects an overboost. So there would have to be two failures before it does a "nissan".

If that's the case... phew I understand :)

Quote:

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Originally Posted by Captain_Rightfoot

Ok, so the TD5 has a physical limiter on the wastegate itself, and then the ecu detects overboost and can cut fueling if it detects an overboost. So there would have to be two failures before it does a "nissan".

If that's the case... phew I understand :)

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Overboost is not a problem on diesels. Underboost is.

Justin i found this on Patrol 4X4, i'm a member there;)

These are from the Y61 specifications post. There are also a number of other posts re fault codes if you search.
As the previous owner of one that went bang there was a lot of smoke but also a metallic rattle to go with it. Following the failure the vehicle was virtually undriveable.

Fault codes
0102 Air Flow Sensor
0103 Coolant temp sender
0104 Vehicle speed sensor
0203 Throttle pedal switch
0208 Cooling Fan control
0301 Engine ECU
0402 Fuel temperature sensor
0403 Throttle pedal position sensor
0406* Intake air volume VNC system
0407 Crankshaft position sensor
0502* Battery voltage
0504 Auto Trans communication line
0701 Injection Pump –cam ring position sensor
0702 Injection Pump –TDC pulse sensor
0703 Injection Pump communication line
0704 Injection Pump –spill valve
0705 Injection Pump –ECU
0706 Injection Pump –spill valve
0707 Injection Pump injection timing control
0802 Engine ECU
0804* Engine ECU
0807 Stop lamp switch
0901 Engine ECU
0902 Engine ECU relay
0903* Engine ECU
0905 Intake air pressure sensor
1003 EGR volume control valve
1004 Injection Pump –fuel cut out system


Here is a thread on a GU4 BLOWN ENGINE
ZD30 - FOUR Cracked Pistons @ ExplorOz

Baz

Here is the list of forum members from all the forums with;

ZD 30 Engine Failures.

Explore Oz Forum.

Daggs.
Blown_zd30-------------------------- 244K
Roly.
AJB------------------------------------196K
Pud & Barb--------------------------165K
Bulla. (daughters car)
Yakodi--------------------------------130K
Plugger.
JR -------------------------------------130K
Mike.
B & M. -------------------------------126K
Emackj--------------------------------157K
Fourstall2000-------------------------118K
Donald A-------------------------------50K 2004 STL
Old Johno---------------------------------------2000
Ron 2006-------------------------------152K
BushMark-----------------------------109K---2001
Ted--------------------------------------170K---2000
Piggy------------------------------------106K---2001
Rob------------------------------------------------2001
Trevmari-------------------------------141K---2000
Muckrunner-------------------------------------2000
Ppk--------------------------------------160K---2000
Rapid-------------------------------------60K---2004
BittenbyZD30-----------------------------------2000
Alex V------------------------------------84K---2001
Jo64-----------------------------------------------2000
Hen Pecked-----------------------------135K—2003
Mick O-----------------------------------
Sharyn---------------------------------------------2001
Void246----------------------------------150K—2000
Drilly-------------------------------------165K---2000
On Patrol--------------------------------182K---2003
Christa-----------------------------------62K----2005 Navara ***:oops2::burnrubber:
Captain Chaos--------------------------141K
MalcolmC--------------------------------112K---2005
Jonesy65----------------------------------200K

Nissan Club members.

Graeme Wise. -----------------------72K
Ken Beard.
James Watson.


Outerlimits members

Manno74
Poo-trol-------------------------------66K
Wendle--------------------------------115K 2001
Rustys---------------------------------67K 2001
deanchristensen0001---------------31K 2005
Ergjan19------------------------------190K------2000
GUFun--------------------------------127K------2004
Crazynut------------------------------100K------Dec2003



Patrol 4x4.com forum

Mickyd-------------------------------- 2002
Waveriders--------------------------- 98K 2002
Redeye---------------------------------190K
Link-------------------------------------82K 2000
Pat3L
LesleyPerry---------------------------83K 2001
Scratch---------------------------------89K 2002
Stephan--------------------------------150K
JimmyB--------------------------------
Phyrebug (brother’s car)----------210K
Dirty Wheels-------------------------246K-------2001
Phoenie--------------------------------145K-------2003
Ramas----------------------------------231K------2001
Bigal------------------------------------
Martyn79-----------------------------96K
Extreme1-----------------------------140K
Revs-------------------------------------------------2000
Mick013------------------------------157K
jwmr----------------------------------130K-------2001
GUhoon------------------------------150K-------2000
Kirbs----------------------------------150K-------2000
Graham Slater------------------------27K-------2001
G Gudmundsson (Iceland)--------121K-------2002
Tourman
Jack3ld--------------------------------90K---------2002
Kleinstroops-------------------------104K
GUGreat (brother in law’s car)-180K--------2000
Aljohno-------------------------------140K--------2000
Hungry--------------------------------118K--------2001
Maddog1980-------------------------190K--------2000
PC1958--------------------------------190K--------2002
Fuzz------------------------------------190K--------2000
Tony Howe-----------------------------95K
Hodgo----------------------------------162K--------2000
Schommy-----------------------------160K--------2000
Websavages--------------------------
Stressed-----------------------------------------------2001
Walters--------------------------------147K--------2000
Ttam------------------------------------146K-------2000
Pist’n broke---------------------------100K-------2004
Peterfraser3---------------------------120K-------2000
GU Mick-------------------------------150K------2002
Gibbsy---------------------------------
Roger Brown-------------------------
Carljohn-------------------------------141K--------2000



MSN Caravanners Forum.

Ddarren11-----------------------------155K------2002
Ron Shirley-----------------------------------------2000


Yahoo Group. Patrol 4wd. & GU Patrol.

Jtbattau---------------------------------133K------2000
Nomad441946--------------------------------------2000
Paul Julian-----------------------------255K------2000
Paul Julian engine No 2--------------98K-------2003
Redeye141
Coight4wd------------------------------186K
Patrol444--------------------------------161K-----2001
little pn-----------------------------------190K----2000



Overlander 4wd Forum.

Dopey------------------------------------90-100K---
Weekend Maverick (parents car)—124K----2002



Baz.

Quote:

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Originally Posted by LOVEMYRANGIE

mate, if you have the web link or the details, I would love to get hold of them. I am about to buy a bunch of these from Brunswick Diesels here and send them back to my Sydney branch. Someone at HO has sourced an ECU and we want to run them up on the dyno to check them. As we buy them with the MAF, they need to be fully checked out and either tagged for service secondhand, core parts or for remanufacture as long engines.
Cheers

Andrew

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I'll keep looking, but I haven't found a ZD30 one yet.
I have seen the D22 Navara FSM, but european where they had the TD25 engine, then the YD25 with no ZD30.
The terrano/pathfinder was the R50 model, starting around 98.

Quote:

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Originally Posted by Dougal

I'll keep looking, but I haven't found a ZD30 one yet.
I have seen the D22 Navara FSM, but european where they had the TD25 engine, then the YD25 with no ZD30.
The terrano/pathfinder was the R50 model, starting around 98.

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Post above will tell you;)

Here are the YD25 MAF values, incase they help.

Idle, neutral, warm. 0.9-1.8v
2500rpm, neutral, warm, 1.9-2.3v


Comparing these to the values for my 1.8L shopping basket.
Idle, as above 1-1.7v
2500rpm, as above, 1.5-2.1v