Jump to content
SAU Community

Recommended Posts

Hey guys,

last night was stopped by a booze bus for the usual drill and caught what im pretty sure was a new to the force officer. She was friendly, inquisitive an great to talk to. Took measurements of my car to ensure no defects etc and cross referenced with her superior which was also great to talk to. Lol my dilemma, we spent about half hour talking meanwhile my poor baby was left idling and before i knew it shed over heated and lost bit of coolant via the overflow.

Had a similar issue about 2months ago, only this time i had my buddies to point out no fan had activated so in fact my prob could be thermostat. Any thoughts? Cant get it looked at till next Wed,

so i thought id try and get some insight in the meantime...

Link to comment
https://www.sau.com.au/forums/topic/342013-cooling-issue/
Share on other sites

Don't you have the engine fan in a 350GT?

I know that the sedan has it and that the 350z has rubbish electric fans, but if you do have the viscous engine fan, well, it doesn't stop.

Once the engine is running, so is the fan.

I you could have a sizeable air lock in your system (very easy with the VQ), maybe your coolant is passed its use-by date or perhaps it is just that the 16mm thick radiator is just not up to scratch (very possible).

No harm in getting a Nismo thermostat in there anyway. It will open a bit earlier so will keep your engine a bit cooler and is not what you'd call expensive.

Try looking on eBay (Aus), eBay Motors or just get one from RHDJapan

Edited by iamhe77
Link to comment
https://www.sau.com.au/forums/topic/342013-cooling-issue/#findComment-5517765
Share on other sites

Yea another thought was need to flush all coolant out and put a new set in.

Last time mechanics put about 1lt in and said the rest was fine...hmm have to wait till wed i guess. Defintely heard no fan on though, they are far from discrete so i doubt very much i have a super ultra quiet one haha.

Link to comment
https://www.sau.com.au/forums/topic/342013-cooling-issue/#findComment-5517774
Share on other sites

Yea another thought was need to flush all coolant out and put a new set in.

Last time mechanics put about 1lt in and said the rest was fine...hmm have to wait till wed i guess. Defintely heard no fan on though, they are far from discrete so i doubt very much i have a super ultra quiet one haha.

make sure you don't just top up with any coolant, is not recommended to mix coolants as they may not work well with each.

id say just flush it all out top it up and check the fan if its spinning before a drive and after

Link to comment
https://www.sau.com.au/forums/topic/342013-cooling-issue/#findComment-5517894
Share on other sites

Yea the mechanic used genuine Nissan stuff,

said basically the same things as yourself ie not to mix or put cheap & nasty in there. He mentioned a few other small points such as turn on the A/C cos the fan should start spinning almost immediately, if that fails could be something as simple as a fuse or lose wire or in fact thermostat which needs replacing.

Link to comment
https://www.sau.com.au/forums/topic/342013-cooling-issue/#findComment-5518098
Share on other sites

If you suspect the thermostat, best way is to run the car until it starts to get warm, and check the temp difference between the top and bottom hoses. Ie. If on is too hot to touch, and the other is stone-cold, good chance it's your thermostat. Does it only happen with the car on the spot idling? Not at highway speeds? Could also be a blocked radiator...

Link to comment
https://www.sau.com.au/forums/topic/342013-cooling-issue/#findComment-5518599
Share on other sites

Mine has done this many times, its most probably an airlock. 200ml down is enough to cause it.

Try filling the rear bleeder in the morning, when its all cold. It takes a while to get all the air out so you might have to do it a couple of times.

Link to comment
https://www.sau.com.au/forums/topic/342013-cooling-issue/#findComment-5519031
Share on other sites

Mine has done this many times, its most probably an airlock. 200ml down is enough to cause it.

Try filling the rear bleeder in the morning, when its all cold. It takes a while to get all the air out so you might have to do it a couple of times.

Many times? Well guess thats more of a relief lol but still, id have not foreseen this kind of issue in our cars :)

Link to comment
https://www.sau.com.au/forums/topic/342013-cooling-issue/#findComment-5519623
Share on other sites

Many times? Well guess thats more of a relief lol but still, id have not foreseen this kind of issue in our cars :)

It's hard to get the air bubbles out of a V6 motor, there are lots of nooks and crannies for the bubbles to join together and over an hour or so of driving they all meet at the highest part of the engine which in our case is the plate under the manifold, (cooling mod to fix this if you search) or the bleed point. Like I said, drive it, wait for it to cool completely (overnight) and fill the bleeder with a syringe or similar.

Link to comment
https://www.sau.com.au/forums/topic/342013-cooling-issue/#findComment-5519748
Share on other sites

Good news is issue has been found,

bad news is cost so i really need your help on this one guys. The fans which are supposed to activate for cooling do not work, a trial set from a 350z were put in and they worked fine. Therefore i need fans, new from nissan i was quoted $1,200 which is ridiculous.

I was hoping to perhaps get them while the USD is raging with ours, any ideas on sites etc?

http://www.infinitipartsusa.com/partlocato...playCatalogid=0

Link to comment
https://www.sau.com.au/forums/topic/342013-cooling-issue/#findComment-5530112
Share on other sites

www.importmonster.com.au

there will be a set on there. youl just need to browse 100 pages of V35 stuff to find it. but i rekon it will be a hell of a lot cheaper than new parts from the states

f**k i totally forgot about Aaron,

will give him a tingle now!

Link to comment
https://www.sau.com.au/forums/topic/342013-cooling-issue/#findComment-5531449
Share on other sites

http://www.infinitipartsusa.com/partlocato...playCatalogid=0

Just placed the order now as we have some HOT weather fast approaching!

Probably should have checked earlier, but this part is correct for a 2005 V35 coupe lol? Set me back total of $465 including delivery.

Edited by TUFF_350
Link to comment
https://www.sau.com.au/forums/topic/342013-cooling-issue/#findComment-5539771
Share on other sites

Well I have the same problem and mine is a 2003 coupe and has only done 30,000k.

Pressure tested cooling system. Fine.

Bled the cooling system using all correct gear. Proper filler etc. Fine.

Went for a drive. Fine. Temp half way as usual.

No water in oil or rough running.

Stopped and while idling the temp went through the roof and gurgles from overflow tank.

Looked under bonnet and neither electric fan was on. Turned air cond on and neither fan came on which is unusual as normally the passenger side one operates with air on.

Any clues anyone?

I find it hard to believe the fans themselves fail. Both at the same time...

Checked wiring as best I could and all looks intact.

The car is absolutely stock.

g

Link to comment
https://www.sau.com.au/forums/topic/342013-cooling-issue/#findComment-5540170
Share on other sites

Sounds the same as mine, it was an airlock bubble, I was about to buy a new water pump for it, glad I didn't.

These engines need to be bled when cold and may have to be done multiple times from my experience.

Link to comment
https://www.sau.com.au/forums/topic/342013-cooling-issue/#findComment-5540326
Share on other sites

Well I have the same problem and mine is a 2003 coupe and has only done 30,000k.

Pressure tested cooling system. Fine.

Bled the cooling system using all correct gear. Proper filler etc. Fine.

Went for a drive. Fine. Temp half way as usual.

No water in oil or rough running.

Stopped and while idling the temp went through the roof and gurgles from overflow tank.

Looked under bonnet and neither electric fan was on. Turned air cond on and neither fan came on which is unusual as normally the passenger side one operates with air on.

Any clues anyone?

I find it hard to believe the fans themselves fail. Both at the same time...

Checked wiring as best I could and all looks intact.

The car is absolutely stock.

g

Could just be the motor of the cooling assembly, they are bout $150. The mechanic put in some fans as a test from a 350Z and they worked perfect, I didnt want to take any risks piss farting around so i just went with the entire assembly. Fingers crossed this will solve my issue for good, and will not return me or any future owner(s) problems :P

Edited by TUFF_350
Link to comment
https://www.sau.com.au/forums/topic/342013-cooling-issue/#findComment-5540429
Share on other sites

HELP....Seeing relays, fuses, pressure test are ok and I managed to get the low speed fans going from cold start but high speed do not seem to come in when they should.

I guess either wiring issue or the fans are wired in series somehow and a winding is open.

Test in manual is to disconnect temp sensor and terminate with 150 ohm resistor.

Reading the manual I miss something.

If you want to test the high speed fans you disconnect the "coolant temperature sensor harness connector", put a 150 ohm resistor across the pins and the high speed fans should come on. If they dont there is either a fan open winding or a wiring fault.

Where is the bloomin connector.....I cannot find it?

I suspect it on drivers side about half way down engine somewhere but not sure. Should be a 2 wire connector by the looks.

Where is it?

Link to comment
https://www.sau.com.au/forums/topic/342013-cooling-issue/#findComment-5540643
Share on other sites

found temp sensor connector.

did the recommended 150 ohm resistor thing mentioned in manual. Fans came on but not high speed.

Traced wiring and found earth was dodgy so redid that.

350z manual has right set up for relays and wiring.

now sits at half temp then after about 20 minutes temp rises.

Funny thing is the temp guage just jumps a few bars when near max heat. maybe we have Air lock?

I think its time to bleed the system again and if nothing changes off to nissan with consult 11.....but i doubt their abilities to diagnose over plug and play ...replace as much as they can.

Also wondering about fitting a new thermal fan in front of the condensor....anyone done that?

Link to comment
https://www.sau.com.au/forums/topic/342013-cooling-issue/#findComment-5546825
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Greg speaks wisdom. These dirty old Datsuns are only value when they are cheap. When they are not cheap, there is no value. Sounds contradictory, but it's true. We are now 20 years past the hey day of modifying cheap 90s JDM cars for small amounts of money. This is a different world. If you are rich and can afford not to care about what is effectively wasting money on an old Datto shitter, then I have no reason to argue against it. But if you are wanting to experience what we all experienced back in 2005 (and I bought my car last century!) then there is no way to do it.
    • Short answer: No. Medium answer: No, because you still need to conjure the things out of thin air to bolt them to a NA to make it a NA+T. Long Answer: No - The things you need to conjure - meaning a turbo, intercooling, manifolds, exhaust, intake/manifold/piping, clutch, injectors, fuel pump, AFM (?), ECU + Wiring (woo, N/A loom fun) have to come from somewhere. You could have many scavenged these things from an OEM car that someone had upgraded from and use some of these. This will be cost prohibitive now, especially so in the USA. You'd probably pay the same for newer, upgraded components that are better than old OEM stuff from 25-30 years ago. None of these big ticket items are re-usable for the N/A car. Why not buy new and upgrade while you're there? The only real consideration is turbo and fuel sizing and determining whether you want to stay within the bounds of the OEM engine or get into rebuild territory. These limits ARE lower with a N/A motor and especially N/A gearbox at the starting point. And if you're gonna upgrade those then you may as well consider having them built to begin with. Because everyone here knows you're never far from that next engine rebuild once you start making the power you want... The cars you see on the internet and SAU etc have been built over decades. If you're really clued in... you would sell your US car to somebody for what you paid for it. You would then scour AU JDM pages or SAU and buy a car like Dose's on this forum with your powerful American Dollar. This will save you so much money in the long term. Importing it could be tricky. Or it might not because USA. I have long said the only reason 90's Japanese stuff took off was because a) Japanese people had Japanese cars so that is what they used b) Australians could import these cars to Australia with very minimal changes and use them on the road here c) Neither country had well-priced access to US or EU Sports Cars. I don't believe the JDM scene would have taken off in Australia at all if we had EU priced EU BMW M offerings, or more especially the AUS V8 Scene would never have existed if we had the multitude of US cars like Camaros, Mustangs, Corvettes at the prices you folks do. After all - Do the math. I would say put a V8 in your R34 and that's the smart way forward. It is. I did it. I know this from my own experience. But at that point there's no reason to simply not buy a C5 or C6? It would be simpler and easier and cheaper and bette-
    • Reading all this... hurts lol. I have an ENR34 5MT and I paid an inflated USA price for the car alone, had to do tons of preventative maintenance past that, and so I'm over $30K USD into the car already and haven't even touched power.  I wanted to +t it. Not even trying to make GTR numbers, I'd be happy with 250hp.  Can I get away with paying much less to make that happen?
    • Damn you’ve done well, definitely snapping necks.
    • Great weekend and event. Open fire at the caravan park, perfect weather all day and a great feed and a couple of drinks at at awesome country pub.
×
×
  • Create New...