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Old 11-20-2006, 10:22 PM   #1
octron
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Cool no heat

Hi theree
I have a 94 tt jap import and my heater aint workin
the temp is normal ,but its just blowin cold air
I have checked previously asked questions and cant find any related to the mkiv
Any ideas
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Old 11-29-2006, 03:26 PM   #2
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Quote:
Originally Posted by octron
Hi theree
I have a 94 tt jap import and my heater aint workin
the temp is normal ,but its just blowin cold air
I have checked previously asked questions and cant find any related to the mkiv
Any ideas
It seems that coolant from your engine isn't circulating through your heater core...is it possible your heater hoses were bypassed?
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Old 11-29-2006, 08:01 PM   #3
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hi there

Thanks for the reply but general consesus is that the heater valve is bust on it . . i am just havin trouble findin it .it looks like i have to remove the whole dash to get at it .i think i can switch it on constantly but i suppose whenever i do find it .. it would be better to replace it rather than havin to remove the dash in the summer to turn it off
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Old 11-29-2006, 10:06 PM   #4
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Quote:
Originally Posted by octron
...the heater valve is bust on it . . i am just havin trouble findin it .it looks like i have to remove the whole dash to get at it...
Fwiw I agree you'll have to remove most of the dash to get to it.
Quote:
Originally Posted by octron
...i think i can switch it on constantly but i suppose whenever i do find it .. it would be better to replace it rather than havin to remove the dash in the summer to turn it off
Rofl yep. Good luck replacing the valve...

Also fwiw, I've seen several Mkiv Supras' cooling system components fail (water pump, hose splices, etc.), primarily due to improper maintenance. Ime, the jza80's cooling system components (including parts of the heater core) will only stand up well if your coolant is regularly flushed according to the schedule in owner's manual:
http://www.mkiv.com/manual/manualtt/...ule/index.html
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Phil '94 Supra Turbo, 6spd, 'APU'+
Displacement is no replacement for boost.
Life begins at 30psi.


NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners.

Last edited by pwpanas; 11-29-2006 at 10:12 PM.
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Old 12-21-2007, 09:58 PM   #5
walshy2103
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Supra MkIII - Heater Problem Solving


here's a link if you should have any other heating problems.
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Old 12-23-2007, 03:35 AM   #6
ethan12510
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Quote:
Originally Posted by pwpanas View Post
Fwiw I agree you'll have to remove most of the dash to get to it.
Rofl yep. Good luck replacing the valve...

Also fwiw, I've seen several Mkiv Supras' cooling system components fail (water pump, hose splices, etc.), primarily due to improper maintenance. Ime, the jza80's cooling system components (including parts of the heater core) will only stand up well if your coolant is regularly flushed according to the schedule in owner's manual:
MKIV.COM
use Toyota Red antifreeze. Its the best stuff u can put in a toyota
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Old 12-23-2007, 07:04 AM   #7
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Quote:
Originally Posted by ethan12510 View Post
use Toyota Red antifreeze. Its the best stuff u can put in a toyota
Agreed...along with distilled water (i.e. not tap water).
__________________
Phil '94 Supra Turbo, 6spd, 'APU'+
Displacement is no replacement for boost.
Life begins at 30psi.


NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners.
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