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 1995 overheating!!!

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RJefferies94
New Member
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Number of posts : 12
Home City : Sydney
Registration date : 2018-02-11

PostSubject: 1995 overheating!!!   Sun Feb 11, 2018 12:18 am

Hey everyone,

So I came to sunny Australia and bought a beautiful Toyota Hiace... or so I thought. First trip out of Sydney and we overheat on the motorway. So I ran a load of tests and had it looked at.. Block tested the head gasket - seemed fine. Replaced the thermostat as there wasnít one in there and replaced the water pump.

So next trip out of Sydney...overheats again!!!! Weíre fine running around the city but when I take it 100kmís per hour or more and drive for an extended period of time Iím met with this problem.

Now the previous owner said it had a brand new radiator as she had overheating problems but never produced the invoice so Iím thinking iíll Start by flushing the radiator and seeing if itís blocked or leaking and potentially test the head gasket again?

Any help would be very much appreciated. Cheers guys!
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GPW
Hiace Master
Hiace Master
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Number of posts : 728
Home City : Cambridge, UK
Model and year : Model: KD-KZH100G-MRPGT
Year: 1996
Colour: 4K1
Trim: FN42

Registration date : 2016-07-16

PostSubject: Re: 1995 overheating!!!   Fri Feb 16, 2018 7:29 pm

Sounds like blocked radiators TBH, with a new water pump in there. Good idea to give it a flush, or take a rad out and see how much water gets through it with a hosepipe.

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RJefferies94
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Number of posts : 12
Home City : Sydney
Registration date : 2018-02-11

PostSubject: Re: 1995 overheating!!!   Fri Feb 16, 2018 11:15 pm

No worries will give it a go Sunday. Thanks for the help, will keep you posted
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redcore4
Not so new now
Not so new now


Number of posts : 30
Home City : Manchester
Model and year : super custom 2.4TD manual - 1992
Registration date : 2010-05-08

PostSubject: Re: 1995 overheating!!!   Wed Feb 28, 2018 12:32 am

Mine did this for a while - turned out that a tiny radiator hose leak was screwing it up - not enough to show low on water on the dash but enough that I had to watch the thermometer like a hawk on long trips and make sure I topped it up all the time. Once the radiator issues were sorted we had to change out the thermostat because it was full of gunk and was sticky, but after that it ran fine. (Well... for a couple of years, until I tried to run it without the radiator cap on by mistake, turns out you can only do that for around 12 miles before the head gasket blows on a 92 hiace. Who knew??)
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Sooze



Number of posts : 1
Home City : Portland Oregon
Registration date : 2018-08-10

PostSubject: Overheating HiAce    Fri Aug 10, 2018 4:25 am

Greetings all!

After 3 years searching for my dream van I found it in the form of a 1993 HiAce super custom passenger van. I purchased it for road trip adventures and have found that it is getting hot and that the transmission seems to malfunction. Today I was driving on the highway at about 90km /hr and the outside temp was
Very hot (97 degrees f). After getting caught in heavy traffic the van started to rev high (<3000rpm) at 40-50 km and would not get above 60 as traffic started to move. The engine is palpably hot but the temp gauge is right in the center and the coolant level seems ok. I got the transmission flushed and new fluid in and got back on the road. Same problem came up again. So I pulled over and now itís cooling off outside and Iím goin to try to hit the road again. Engine still feels hot to touch though! Any ideas about whatís happening?
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GPW
Hiace Master
Hiace Master
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Number of posts : 728
Home City : Cambridge, UK
Model and year : Model: KD-KZH100G-MRPGT
Year: 1996
Colour: 4K1
Trim: FN42

Registration date : 2016-07-16

PostSubject: Re: 1995 overheating!!!   Fri Aug 10, 2018 8:34 am

Sooze wrote:
Greetings all!

After 3 years searching for my dream van I found it in the form of a 1993 HiAce super custom passenger van. †I purchased it for road trip adventures and have found that it is getting hot and that the transmission seems to malfunction. Today I was driving on the highway at about 90km /hr and the outside temp was
Very hot (97 degrees f). After getting caught in heavy traffic the van started to rev high (<3000rpm) at 40-50 km and would not get above 60 as traffic started to move. The engine is palpably hot but the temp gauge is right in the center and the coolant level seems ok. I got the transmission flushed and new fluid in and got back on the road. Same problem came up again. So I pulled over and now itís cooling off outside and Iím goin to try to hit the road again. †Engine still feels hot to touch though! Any ideas about whatís happening?

Sounds like the transmission needs a rebuild - was the old fluid dirty when it came out?
When a transmission actually slips and you need to give it a 'flush' is usually a sign it's worn and the ATF is contaminated.

You can try a number of flushes with gentle town driving in between of 1-200 miles to get the dirt out - if that fails you may want to also consider an additional external cooler, but at the end of the day if a lot of dirt comes out and it keeps slipping it will need a rebuild at a transmission specialist.

The Toyota transmissions are pretty good but the Hiace is a big van to push so they really need to be in good shape to work properly, hot weather and motorways will show up any weakness. Good luck!
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