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Old 02-01-2019, 11:29 PM   #1
MisterBLC
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Default 7xx/9xx Heater Valves?

Ok, sick of these crappy plastic parts! Heater valve split and left my wife stranded on the side of the road. Thankfully the engine didn't overheat but I'm looking for a solution that doesn't suck. Any recommendations on a replacement heater valve that isn't plastic junk?



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Old 02-01-2019, 11:50 PM   #2
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https://forums.tbforums.com/showthread.php?t=246617

I have one of these valves in my 744t, 944 and 945t and I have had zero failures in 10+ years and that is in 110+deg AZ heat.
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Old 02-01-2019, 11:50 PM   #3
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It's winter? Avoid the problem? IDK, don't bother just put a sturdy male-bale barb on it and forget about it? That thing is only used on the max a/c / heat all the way off anyway?
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Old 02-02-2019, 01:03 AM   #4
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Yeah definitely have it bypassed for now...I'm thinking ahead for when my wife wants colder AC in the summer
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Old 02-02-2019, 11:11 AM   #5
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Originally Posted by Kjets On a Plane View Post
It's winter? Avoid the problem? IDK, don't bother just put a sturdy male-bale barb on it and forget about it? That thing is only used on the max a/c / heat all the way off anyway?
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Yeah definitely have it bypassed for now...I'm thinking ahead for when my wife wants colder AC in the summer
What they said.

I once used a straight through deep 13mm socket just to "get me home" (for the next 4 months).
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Old 02-02-2019, 11:49 AM   #6
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No experience with it but I've been looking at AC Delco 15-5320 when I go to replace mine in the spring.
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Old 02-02-2019, 12:13 PM   #7
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Been there and done that; my old lady had our newborn in the car, but this is best ...

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Originally Posted by thelostartof View Post
https://forums.tbforums.com/showthread.php?t=246617

I have one of these valves in my 744t, 944 and 945t and I have had zero failures in 10+ years and that is in 110+deg AZ heat.
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Old 02-02-2019, 12:53 PM   #8
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This is what I used in my 7 and it works great.
https://www.amazon.com/Motorcraft-YG.../dp/B000C5DZOG
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Old 02-02-2019, 01:26 PM   #9
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Thanks!
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Old 02-02-2019, 02:12 PM   #10
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The yg-136 is great,been using them for years.the first thing I do with a new to me 7/9 series is replace that valve. Consider it a wear item.
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Old 02-02-2019, 04:07 PM   #11
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Quote:
Originally Posted by Kjets On a Plane View Post
It's winter? Avoid the problem? IDK, don't bother just put a sturdy male-bale barb on it and forget about it? That thing is only used on the max a/c / heat all the way off anyway?

No relation to what mode the HVAC system is in. It's controlled strictly from the temp control side of things. Once you crack it off the full cold setting, the valve opens.


Swapping to the one TLAO posted functions the same way, except it allows coolant flow out of the back of the head even when you don't have the heat on. It also allows for more coolant flow thru the core so you actually get a little more heat in the dead of winter.


I've had that style on mine for several years as well, no issues.
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Old 02-02-2019, 04:29 PM   #12
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Originally Posted by Ursan View Post
I once used a straight through deep 13mm socket just to "get me home" (for the next 4 months).
Winning
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Old 02-02-2019, 06:14 PM   #13
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Originally Posted by oldnfast View Post
The yg-136 is great,been using them for years.the first thing I do with a new to me 7/9 series is replace that valve. Consider it a wear item.
Me too! Bought a 7, it started leaking coolant like 1 month later. Replaced with ford valve and still going strong.
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