Nissan Patrol 2002 ZD30 Intercooler Problems

Submitted: Tuesday, May 04, 2010 at 18:43
ThreadID: 78223 Views:6480 Replies:4 FollowUps:2
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Our ZD30 engine bleep itself a few months ago and I was able to find a second hand replacement engine however we now have realised the intercooler is buggered. We had the intercooler tested and it holds no pressure what so ever.

Our Question: If the intercooler was not working at all and held no pressure what affect would this have on the engine especially on a long trip.

The motor blew while driving from Coffs Harbour to Sydney. We were approx 60klms from Sydney when the motor let go. (what a mess)

We are asking this question as we are wondering if this issue had something to do with out motor going Kaaboom. The number 3 conrod snapped just at the base of the piston and we suspect the motor may have got way too hot and resulted in the conrod letting go.

Note: There was no prior warning to the motor go off with no sensor lights appearing on the dash or any other malfunction lights showing up. The temp control on the dash was within the normal range.

Any info will be appreciated.
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Reply By: Member - John (Vic) - Tuesday, May 04, 2010 at 19:08

Tuesday, May 04, 2010 at 19:08
What model and year is your Nissan??

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Follow Up By: Member - Boobook - Tuesday, May 04, 2010 at 19:10

Tuesday, May 04, 2010 at 19:10
John, take another look at the subject.
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Follow Up By: Member - John (Vic) - Tuesday, May 04, 2010 at 19:39

Tuesday, May 04, 2010 at 19:39
Oop's your right need to put my glasses on :-))

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Reply By: ZD30bomb - Tuesday, May 04, 2010 at 19:39

Tuesday, May 04, 2010 at 19:39
The Patrol is 2002 DX GU 3ltr Turbo (ZD30 engine)
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Reply By: Bonz (Vic) - Tuesday, May 04, 2010 at 19:51

Tuesday, May 04, 2010 at 19:51
The intercooler cools the incoming air allowing it to be more dense and therefore to make a bigger bang. If its stuffed then the motor just wouldn't have AS MUCH power but it shouldn't contribute, in my opinion, to a bang.

My ZD30 intercooler cracked and leaked and I found it was a common problem with those units, I got a replacement from a mob in Adelaide, better/bigger and also fan assisted for $400 under Mr Nissan's offering, which would die again one day anyways
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Reply By: Chaz - Tuesday, May 04, 2010 at 20:20

Tuesday, May 04, 2010 at 20:20
The intercooler can have a huge impact on the engines reliability. If it leaks air that has already passed the MAF sensor, then your engine will be running rich, which will increase EGT’s significantly. Any diesel running rich will run hot and you won’t see it on the coolant temp gauge. Mixture is determined by air passing through MAF and has little to do with boost.
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