Coolant leak Caldina GTT

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Coolant leak Caldina GTT

Postby Technohedge » Sun Sep 15, 2019 4:13 pm

Appears to be coming from somewhere underneath the thermostat housing. Its not the housing though, i was wondering if its the little black hose underneath? I cant even get a mirror inside to see it.

any ideas guys?

cheers
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Re: Coolant leak Caldina GTT

Postby GDII » Mon Sep 16, 2019 11:09 am

Hose from hell? This connects from the oil cooler to the block I believe. A common enough thing to fail on the 3S engines. Not much fun to replace with the engine or turbo in the car but I think these are a bit easier than the earlier engines.

PNC 16281 near the middle of the picture.
Part number 16281-88460

http://jp-carparts.com/toyota/partlist. ... 2&fig=1603
1990 SW20 MR2
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Re: Coolant leak Caldina GTT

Postby Technohedge » Mon Sep 16, 2019 12:24 pm

yea i was thinking this is the culprit, is it even possible to get the bugger out? I was gonna try bud didnt want to if it might have been something else!
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Re: Coolant leak Caldina GTT

Postby Technohedge » Mon Sep 16, 2019 8:46 pm

Ok from doing some reading, its actually the other one 'the hose from hell on earth' that seems to be gone. This seems a bastard to get to, there another pump thats in the way?
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Re: Coolant leak Caldina GTT

Postby GDII » Tue Sep 17, 2019 9:44 am

Sorry. HFH is 16282, the vertical straight hose. The one we think is the issue is the HFHOE. They are both a pain to get to but I think the Caldina engine makes it a bit easier to fix this one. Not that I have done either. I have done a GEN2 3SGE oil cooler hoses which are different but still a massive headache.
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Re: Coolant leak Caldina GTT

Postby Technohedge » Tue Sep 17, 2019 1:12 pm

yea where its coming from its deffo the HFHOE

Gonna get me some angled snipe nosed pliers this avro.....
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Re: Coolant leak Caldina GTT

Postby Technohedge » Tue Sep 17, 2019 8:43 pm

Okkkkk so I replaced the HFHOE, not the worst job i ever done. Still bloody leaks!

So i had a mess around with a USB endoscope camera I have, and discovered a pinhole in one of the freeze plugs under the hose.

That looks like an arse to replace? I dunno how i can even get to it?
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Re: Coolant leak Caldina GTT

Postby GDII » Wed Sep 18, 2019 9:29 am

That's no fun. Good to hear the HFHOE wasn't too bad to replace in the car. GEN2 and GEN3 engines connect into the water pump so are much harder to sort.

That's not good, not sure how to replace frost plugs.
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Re: Coolant leak Caldina GTT

Postby Technohedge » Wed Sep 18, 2019 9:33 am

Im thinking it may be easier to replace the car at this point lol

My Ac system hasn't worked for ages, Can i delete the system and remove the pump? May be able to get to it if I do this. I would probably need a different belt for the alternator though
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Re: Coolant leak Caldina GTT

Postby GDII » Wed Sep 18, 2019 9:37 am

You could remove the pump if there is no pressure in the system. Then just put it back when you've finished the fix so you don't need another belt.

I'm in need of a GEN4 3SGTE.... with a Caldina attached. :wink:
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Re: Coolant leak Caldina GTT

Postby Technohedge » Wed Sep 18, 2019 1:32 pm

Sent you a PM mate
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