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DoomyXTrail Profile
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X-TRAIL NEWBIE
 


Date Registered: 01-2006
Location: Caboolture, Queensland
TOTAL POSTS: 18
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Re: Cooling


Oh I will be emoticon

Just got to sell my Triton first and I have a fair list to do.

---
2004 Series II ST
Pearl White, Automatic
15/Feb/2006, 2:52 pm Link to this post Send Email PM   Send Private Message
 
DoomyXTrail Profile
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X-TRAIL NEWBIE
 


Date Registered: 01-2006
Location: Caboolture, Queensland
TOTAL POSTS: 18
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Re: Cooling


Well a belated update to this problem.

Finally got Nissan to do my 60k service and check out the overheating problem.
After it become reeallyyy obvious going up a steep hill out of a dam where it nearly redlined after a 400m steep climb.

It seems the radiator was partly blocked due to casting sand being left in the block out of the factory. This sand mixes with the water and becomes cement like and settling in the radiator.

I've had two fifths of bugger all time since I bought the vehicle and picked it up right on closing time and only had the office girl to talk to so no clarification on the heat affected cruise and aircon yet.

Big run this weekend bush to see if I can load her up and make sure all is good again.

---
2004 Series II ST
Pearl White, Automatic
26/May/2006, 9:09 pm Link to this post Send Email PM   Send Private Message
 
AKAK9 Profile
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X-TRAIL ENTHUSIAST
 


Date Registered: 01-2006
TOTAL POSTS: 133
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Re: Cooling


Just a little bit of information that might help. Modern radiators are designed to have hot air pulled away from the radiator, not have cool air pass through them. The radiator is just a place for hot water to pass over a large surface area and have hot air DRAWN away. Most modern radiators are Aliminium as well, meaning they are just a big heat soak.

Years ago radiator flow was imperitive, not so now. The only reason the grill is in place is so that there isn't a negative air zone. A good example is perhaps the Toyota Soarer which has a very small opening on the front, yet the radiator is capable of cooling a V8.
28/May/2006, 10:47 pm Link to this post Send Email PM   Send Private Message
 
David M Profile
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X-TRAIL FANATIC
 


Date Registered: 02-2005
Location: Taylor's Hill (Melbourne)
TOTAL POSTS: 466
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Re: Cooling


Engine overheating problem emerged again yesterday - driving in the heat it is not funny when the air con decdes to turn off every time the engine temp guage goes past half way. Travelling lightly loaded yesterday the temp went up on every longish hill climb. up to the white mark below high on the worst. This problem seems only to have emerged since I decided to try Shell V power but I will try the steps from the forum - check coolant levels first and the radiator gaps; reset the ecu. Apart from that it seems to be running very well, and getting an improvement in economy (9.1 l/100 on the last tank full - 608 kms).
For now I am assuming that the air con is not a fault but a setting to lower the load on the engine any time it heats above a certain point.
David M

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David M (X095)

ST Auto (series 1) 180,000 kms
Nissan nudge, fog lights, towbar, floor mats, K&N filter, Cooper CS4s, electric trailer brake controller, GME TX3220
18/Jan/2007, 11:44 am Link to this post Send Email PM   Send Private Message
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29100
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Re: Cooling


Dave,

Pay very close attention to this overheating problem as you may be experincing what a couple of forum members have experienced with a blocked radiator with casting sand as stated in THIS thread.

Engine overheating is never a good sign and you'll need to find the cause real quick to avoid paying big bucks later.

Please keep us updated.

Last edited by jalalski, 13/Feb/2007, 2:56 pm


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18/Jan/2007, 12:06 pm Link to this post Send Private Message MSN Blog
 
Rybky Profile
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X-TRAIL LEGEND
 


Date Registered: 08-2005
Location: Sydney
TOTAL POSTS: 542
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Re: Cooling


Also Dave, if your fuel economy has suddenly improved and now you are having overheat issues it could be that your engine is running too lean.



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- Adam (MY04 Titanium Ti-L)
Full Hi-Tech exhaust,Koni shocks,Whiteline rear s/bar,front strut bar,K&N filter,eyelids,Pioneer DVD+iPod+Veh Dynamics+rear view camera
18/Jan/2007, 1:03 pm Link to this post Send Email PM   Send Private Message
 
basshead Profile
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X-TRAIL HOLIC
 


Date Registered: 02-2004
Location: Panania, Sydney
TOTAL POSTS: 2852
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Re: Cooling


During the recent day-trip to Stockton the other weekend, my engine temp was up and down all day. I have much experimenting to do (which I can't see me ever finding the time for) to work out what was the cause of it. Following info provided for other's benefit (possibly might help them if they experience it).

Contributing factors on the day, listed from most likely cause:

* bash-plate restricting airflow under the engine.
* sand/air temp on the day (although there was quite a strong cool breeze) - dash temp display got to 52 degrees!
* with all the sand driving, was lots of work for the engine/power steering (fluid seen boiling in the reservoir!) and 4WD system (although the 4WD light never flashed for me, but did on Naff's X-Trail). Engine revs were generally pretty low for most of the day (automatic rarely kicked-down gears)
* nudge bar and big spotties blocking air flow through grille.
* extra hot air under bonnet being sucked into engine (even though the standard air intake is located towards the front of the engine bay, this is also where the in-dash temp sensor is, and driving speeds wouldn't have been fast enough to "force" cooler outside air in through the grille and into the tiny factory air intake duct (top speed was about 40k's, average about 30k's).

With all those contributing factors I'm not really surprised the engine temperature rose. It never got to the stage of getting up to the last (highest) notch (before the top), but still, being a relatively new car, I would've thought the design would've been better for engine cooling.

The A/C turned itself off (possibly due to the increasing engine temp), which is when I stopped and popped the bonnet and noticed the boiling power steering fluid.

I wonder if ours is another "casting sand in the radiator" victim?


---
Rich. X-013(c)
'04 S2 ST Auto. Nudge_roofracks_tow_tints_Lightforce_GME_YokoGeoA/T-S_TBS_bashplate_50mm-spacer-lift
Click here to see >300MB of photos and videos All For His Glory.
18/Jan/2007, 6:29 pm Link to this post Send Email PM   Send Private Message MSN Yahoo Blog
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29100
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Re: Cooling


Rich,

During all of my off-road trips in hot days and others, I have never experienced a rising engine temp and its not the norm even if you drive around in the hottest day. There must be something else that caused this.

Have you checked that the cooling fans were working and with such heat they would have been working overtime.

In regards to the 52 degrees display you got, the position of the factory sensor is far from being ideal and this adds-up to the exaggerated temp reading for sure.

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18/Jan/2007, 7:00 pm Link to this post Send Private Message MSN Blog
 
hicksy Profile
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Date Registered: 08-2005
Location: coffs harbour
TOTAL POSTS: 34
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Re: Cooling


The reason that the manufacturer make the radiators so thin and small is so that they get hot quicker. So that we get better fuel economy but that does not help us when it gets to hot it gives use less time to do some think if we do not see the gauge go up,then the gauge goes down to cold it is all over the gauge does not work with out water in the system./
18/Jan/2007, 10:15 pm Link to this post Send Email PM   Send Private Message
 
hicksy Profile
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Date Registered: 08-2005
Location: coffs harbour
TOTAL POSTS: 34
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Re: Cooling


here is a diy job for some one why not put in a manual switch for the thermo fans to work when you think it is getting hot that way you switch it on with out making the motor over heat just thinking out loud
18/Jan/2007, 10:25 pm Link to this post Send Email PM   Send Private Message
 


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