David M
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
--- 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
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18/Jan/2007, 11:44 am
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jalalski
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
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basshead
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.
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18/Jan/2007, 6:29 pm
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jalalski
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
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