Hi,
I replaced the thermostat recently, but neglected to orient the pressure relief valve on the rim of the thermostat
with a mark on the thermostat housing. My Chilton's book says to do this, but the Toyota Service Manual says nothing.
I oriented it the way the old one was: horizontal, facing forward.
Does anyone know how much the orientation matters?
I'm concerned because it's running slightly hotter now, and has had vapor lock in the summer a few times.
Thanks,
Steve
Orientation of thermostat?
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Rickety Rhino
- Member
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- Joined: Sat Jan 22, 2005 6:03 pm
Orientation of thermostat?
Location: Boulder, Colorado
Smokey The Brake - 1984 4WD, 230K
Smokey The Brake - 1984 4WD, 230K
Re: Orientation of thermostat?
don't know if it matters, but i always orient the bleed hole vertically, ie the highest point on the t-stat. hope this helps.
if it aint there, there's a good chance it won't break!
83 SR5 Silver/Blue (Snowmobile/work beater)-totaled but drivable
85 SR5 Blue
88 SR5 White (the 'good' one)-not anymore-totaled
87 fwd silver wagon a/t
87 4wd dx Cream (a/t- not anymore- now m/t)
83 SR5 Silver/Blue (Snowmobile/work beater)-totaled but drivable
85 SR5 Blue
88 SR5 White (the 'good' one)-not anymore-totaled
87 fwd silver wagon a/t
87 4wd dx Cream (a/t- not anymore- now m/t)
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ARCHINSTL
- Goldie Forever
- Posts: 6369
- Joined: Sat Apr 30, 2005 1:52 pm
- My tercel:: Goldie is a 1986 SR5 attualmente con Weber/also owned the first T4WD in STL in late '82
- Location: Kirkwood, a 'burb of St. Louis
Re: Orientation of thermostat?
The AutoZone site mentions installing with the hole vertical.
http://www.autozone.com/autozone/repair ... 5280051dbf
Have you ever perused the AZ Terc site's guide? It is more than just a supplement to the FSM - it has photos.
Tom M.
http://www.autozone.com/autozone/repair ... 5280051dbf
Have you ever perused the AZ Terc site's guide? It is more than just a supplement to the FSM - it has photos.
Tom M.
T4WD augury?
"Oh, do not ask, 'What is it?' Let us go and make our visit."
T.S. Eliot - "The Love Song of J. Alfred Prufrock"
"Now and then we had a hope that, if we lived and were good, God would permit us to be pirates."
Mark Twain
"Oh, do not ask, 'What is it?' Let us go and make our visit."
T.S. Eliot - "The Love Song of J. Alfred Prufrock"
"Now and then we had a hope that, if we lived and were good, God would permit us to be pirates."
Mark Twain
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Rickety Rhino
- Member
- Posts: 32
- Joined: Sat Jan 22, 2005 6:03 pm
Re: Orientation of thermostat?
Tom: Wow, that AZ site looks like a great resource! I'll be exploring it some more.
Thanks to both of you for responding. I studied the pictures in the AZ link and convinced myself that my old thermostat's orientation was in fact vertical as desired, and that's the way I put the new one in.
Cheers,
Steve
Thanks to both of you for responding. I studied the pictures in the AZ link and convinced myself that my old thermostat's orientation was in fact vertical as desired, and that's the way I put the new one in.
Cheers,
Steve
Location: Boulder, Colorado
Smokey The Brake - 1984 4WD, 230K
Smokey The Brake - 1984 4WD, 230K
-
ARCHINSTL
- Goldie Forever
- Posts: 6369
- Joined: Sat Apr 30, 2005 1:52 pm
- My tercel:: Goldie is a 1986 SR5 attualmente con Weber/also owned the first T4WD in STL in late '82
- Location: Kirkwood, a 'burb of St. Louis
Re: Orientation of thermostat?
The AZ site is, in many ways, better than the FSM - but really, both are needed.
The AZ site has mucho info on every system of our cars - explore it with joy. I also signed in as owning an '85 Corolla RWD, as there is some overlap in info and pix.
I've always wondered why it has so much on a car that can't possibly have that many adherents nowadays - I even sent it an email a few years ago thanking it for the info and keeping it online - and also telling it of our Club.
You must have had good luck with your Tercs - I noticed you joined in early 2005 and rarely post.
Tom M.
The AZ site has mucho info on every system of our cars - explore it with joy. I also signed in as owning an '85 Corolla RWD, as there is some overlap in info and pix.
I've always wondered why it has so much on a car that can't possibly have that many adherents nowadays - I even sent it an email a few years ago thanking it for the info and keeping it online - and also telling it of our Club.
You must have had good luck with your Tercs - I noticed you joined in early 2005 and rarely post.
Tom M.
T4WD augury?
"Oh, do not ask, 'What is it?' Let us go and make our visit."
T.S. Eliot - "The Love Song of J. Alfred Prufrock"
"Now and then we had a hope that, if we lived and were good, God would permit us to be pirates."
Mark Twain
"Oh, do not ask, 'What is it?' Let us go and make our visit."
T.S. Eliot - "The Love Song of J. Alfred Prufrock"
"Now and then we had a hope that, if we lived and were good, God would permit us to be pirates."
Mark Twain
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dlb
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Re: Orientation of thermostat?
is the pressure relief valve the little rivet that rattles around in the ring of the t-stat?
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Petros
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Re: Orientation of thermostat?
that is not a pressure relief valve at all, it is just an air bleed to prevent trapped air when you fill it. Some call it a rattle valve, not sure why it is necessary to have a loose rivet, some brands just have a small hole.
The radiator cap is the pressure relief valve.
The radiator cap is the pressure relief valve.
'87 Tercel 4wd SR5 (current engine swap project)
'84 Tercel 4wd (daily driver, with on going mods)
'92 Mazda MPV 4wd (wife's daily driver)
'85 Tercel 4wd DLX auto(daughter's daily driver)
'01 Honda Civic (other daughter's daily driver)
'84 Tercel 4wd (daily driver, with on going mods)
'92 Mazda MPV 4wd (wife's daily driver)
'85 Tercel 4wd DLX auto(daughter's daily driver)
'01 Honda Civic (other daughter's daily driver)
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dlb
- Highest Ranking Member
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- Joined: Mon Jul 06, 2009 9:03 pm
- My tercel:: '87 sr5, '83 dlx parts car
- Location: bc, canada
Re: Orientation of thermostat?
sorry, wrong terminology. air bleed is what i meant. time to pull it apart and pay attention to that thing this time.