new radiator
Submitted: Thursday, Mar 15, 2007 at 22:06
ThreadID:
43304
Views:
2156
Replies:
9
FollowUps:
11
This Thread has been Archived
fishaholic
My 100 series is still getting hot ( had a post about 2 days ago for anyone to c the history ), its not a temp guage prob. I am getting a quote for a bigger radiator, maybe a 3 core instead of a 2. Has anyone else done this with success?
Reply By: Member - Steve T (NT) - Thursday, Mar 15, 2007 at 22:24
Thursday, Mar 15, 2007 at 22:24
Perhaps you should see if the fan is working properly, EG my 100 series started to get hotter than normal I changed the fan and no more trouble.
This does become a common problem on 1hz motors.
Cheers Steve.
AnswerID:
227746
Follow Up By: fishaholic - Thursday, Mar 15, 2007 at 22:34
Thursday, Mar 15, 2007 at 22:34
cheers for the response Steve,
done that already,
-new fan
- new thermostat
- new radiator ( 2 core standard )
- head gasket tested
- no
driving lights or other air restrictives
so yeah runnin out of ideas u got any?
and what do u think about a 3 or 4 core radiator?
FollowupID:
488474
Follow Up By: Member - Steve T (NT) - Thursday, Mar 15, 2007 at 22:41
Thursday, Mar 15, 2007 at 22:41
No mate if its not that its beyond me,all I know is radiators don,t come cheep.
Cheers Steve.
FollowupID:
488476
Follow Up By: fishaholic - Thursday, Mar 15, 2007 at 22:45
Thursday, Mar 15, 2007 at 22:45
yeah just paid 600 for this one and it got worse, the radiator mob said they'll give me my money back if i buy the bigger one through them, another 4-500 bucks. Maybe I should by a 3litre patrol, they only get hot once.
FollowupID:
488477
Reply By: Davo_60 (ACT) - Thursday, Mar 15, 2007 at 22:53
Thursday, Mar 15, 2007 at 22:53
fishaholic,
If it's an aftermarket turbo then you may need to
check EGT's, could be overfuelling.
Cheers,
Dave
AnswerID:
227754
Follow Up By: fishaholic - Friday, Mar 16, 2007 at 19:44
Friday, Mar 16, 2007 at 19:44
yeah how u going Dave,
cheers for the reponse, what do the EGTs mean, is that the timing or something?, im an oyster farmer not a mechanic, and a country bumkin too boot!
FollowupID:
488658
Follow Up By: Member - Steve T (NT) - Friday, Mar 16, 2007 at 21:59
Friday, Mar 16, 2007 at 21:59
Yeah fuel pump timing thought about that on the way
home from work today, over fueling will cause 1hz to get hot.
Cheers Steve.
FollowupID:
488696
Follow Up By: Davo_60 (ACT) - Saturday, Mar 17, 2007 at 09:12
Saturday, Mar 17, 2007 at 09:12
Worth looking at having a pyrometer fitted to
check the exhaust gas temperature (EGT) particularly under load. If it is getting much over 500 degrees on a 1HZ it may be getting too much fuel. Just a thought but more likely to be cooling system related.
FollowupID:
488732
Follow Up By: Member - Steve T (NT) - Saturday, Mar 17, 2007 at 09:33
Saturday, Mar 17, 2007 at 09:33
Try this take the radiator cap off start the car warm it up so as the thermostat is open, put your heater on and let it run a bit more and the
check the level in the radiator.
Some times when someone has filled the radiator, they haven't opened the heater so there is no water is in that part of the system,so when they actually use the heater water goes through the heater and the end result is less water in the radiator
Just another thought .
Cheers Steve.
FollowupID:
488738
Reply By: Member No 1- Friday, Mar 16, 2007 at 08:08
Friday, Mar 16, 2007 at 08:08
probable causes...fan, thermosat etc etc
but also (and from 1st hand experience) have you had coolant change in last 12 months or so...(by others rather than toyota dealership)
took just 12 months in my case for radiator to become blocked with sediment (looked like powdered alloy to me...probably from radiator or alloy head?) as previous 4wd mob who serviced vehicle didnt flush out old coolant properly when they did coolant change...the new reacted with old and created an acid....
AnswerID:
227790
Follow Up By: fishaholic - Friday, Mar 16, 2007 at 19:54
Friday, Mar 16, 2007 at 19:54
member,
cheers for the response, new coolant was added 3 weeks ago, and the whole system was cleaned out then when the new radiator was fitted.
FollowupID:
488663
Reply By: Robnicko - Friday, Mar 16, 2007 at 14:48
Friday, Mar 16, 2007 at 14:48
Fishaholic,
This is a bit of work but have you removed the water pump to
check if the impeller has a build up of rubbish on it? I had a similar problem with a car years ago and when I removed the water pump I found that the impeller blades were gunked up. I cleaned them and reinstalled and all seemed fine after that. Also make sure that the water pump is not broken between the drive pulley and impeller.
Good Luck
Rob
AnswerID:
227855
Follow Up By: fishaholic - Friday, Mar 16, 2007 at 19:42
Friday, Mar 16, 2007 at 19:42
havnt tried the water pump impeller, but will do that next weel.
FollowupID:
488657
Reply By: Member - cliff J (VIC) - Friday, Mar 16, 2007 at 22:08
Friday, Mar 16, 2007 at 22:08
hi fishaholic
as a toyota owner i have had others with the same problem we found that the viscos hub behind the fan was not doing job when the motor was hot fan was not spinning it was mostly a problem under load or going up long hills i hope this might help
cliff
AnswerID:
227903
Follow Up By: goingplatinumcomau - Saturday, Mar 17, 2007 at 03:42
Saturday, Mar 17, 2007 at 03:42
Very true any movement sideways is cause for concern.
They have been known to fly apart and destroy radiator.
FollowupID:
488724
Reply By: icecold - Saturday, Mar 17, 2007 at 10:32
Saturday, Mar 17, 2007 at 10:32
I have a HJZ motor myself, and when i was triving up long hills it to was heating. my mechanic checked the viscous fan and it was all ok. then he drove behind me on a
hill and said i had a ton of black smoke comming out of my exshaust. so he then procceded to adjust my injector pump until there was a small amount comming out. hence since then no more over heating on the same
hill, even with a load of about 300kg. hope this will help in some way.
Regards to all,
Chris
AnswerID:
227956
Reply By: apriti00 - Saturday, Mar 17, 2007 at 20:51
Saturday, Mar 17, 2007 at 20:51
I don't think that getting a bigger radiator is the solution, I see by reading your original post and seeing your responses to the replies /suggestions you have already investigated the most common causes. I had a similar problem on a 1hz that was turbo'd and i/c which would over heat under heavy load, but keep normal temperature all other times. Now I don't know if this is the case with yours,
mine ended up being a cracked head as I was always after more power and the car was overfuelled, unfortunately the only way that this was diagnosed was by removing the head as I had run out of other ideas. Replacing the radiator should not be required seeing that you already have a new one and new viscous coupling which should handle the task. The standard system is more than capable of handing the load, I now run a factory i/c TD chipped and have seen the pyro in excess of 750 pre turbo and the temp needle hasn't moved off its normal position. I think that finding the problem is the solution which isn't always easy.
Cheers
AnswerID:
228038
Reply By: fishaholic - Sunday, Mar 18, 2007 at 19:53
Sunday, Mar 18, 2007 at 19:53
Thanks to you all for your responses, its a very frustrating thing, i am very keen to learn more about this fuel timing and overfuelling problems. Does everyone think its a diesel mech thing to change the pump timing back a little, or is it something I could do? Also the cracked head idea, what do you all think about the tests the radiator mobs do, I mean do you think there very acurate? (bit freightened to go down the road of taking the head off ).
AnswerID:
228180
Follow Up By: apriti00 - Monday, Mar 19, 2007 at 00:01
Monday, Mar 19, 2007 at 00:01
You can back off the fuel yourself, however I would recommend that you see a specialist. What you really want is to make sure that the timming and fuel are correct, this will help by ensuring minimal smoke and good power. I'm not an expert but have found as per this
forum that there are many people that have had different experiences and here you will have to filter them and make your call. Before you do this maybe give as much detail of your problem so that the responses are relative to your issues ie when did the problem start, heats up all the time, under load only, only on hot days, when travelling slow or normal speeds or at highway speeds, when you run the a/c when towing etc. As you have already experienced tests are not always conclusive or identify the problem immediately as they don't always represent real working conditions.
Cheers
FollowupID:
489050
Reply By: SA_Patrol - Monday, Mar 19, 2007 at 08:01
Monday, Mar 19, 2007 at 08:01
fishaholic, did you bleed the radiator when you installed it ?
It is possible that when the coolant was flushed they might not have bled it ,
Adding more core's also means less air will pass the fins, bugs and dirt get trapped between the cores.
AnswerID:
228251