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Another O. L. T. DIY - In depth with the heater core control valve

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Old 12-28-11, 07:57 AM   #31
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Quote:
Originally Posted by issacmuk View Post
i check out the parts on ebay it says not compatible with 92 sc400
you cannot be serious...........
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Old 12-29-11, 12:17 PM   #32
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^ LOL



Quote:
Originally Posted by INTIMAZY View Post
I tried this fix and it somewhat works...

Why somewhat?

The valve arm opened in the opposite way on the Ford piece.
OEM valve opens when it senses vacuum. The Ford valve opens when vacuum stops.
I did get it to work by flipping the arm on the Ford piece to the opposite side and used the OEM arm plus a random screw as a new "arm."
OLT. what are your thoughts on this?
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Old 12-31-11, 08:20 PM   #33
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He just used the vac line that pushes instead of pulls. You can just use a different vac line associated with the heater controls, or hell flip the arm around. It's $350 cheaper, make an effort. LOL.
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Old 12-31-11, 11:25 PM   #34
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Quote:
Originally Posted by O. L. T. View Post
It's $350 cheaper, make an effort. LOL.
Agreed. All credit still goes to O.L.T. for this mod. Saved me a bundle.
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Are you one of those annoying flamers that always thinks the answer to everything is a 2JZ swap?
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Old 01-17-12, 12:30 PM   #35
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Originally Posted by INTIMAZY View Post
Agreed. All credit still goes to O.L.T. for this mod. Saved me a bundle.
I'm willing to try this of course, anyone have a completed install with before and after pics so I can use that as a reference to popping what lines where on this thing?
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Old 04-15-12, 02:27 PM   #36
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Since a few people requested pictures and I had the valve off the car, here is what the modifications I did look like.
Nothing crazy. Just used parts that were already on the car or were laying around on the floor of the garage anyway

Click the image to open in full size.
Click the image to open in full size.
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Are you one of those annoying flamers that always thinks the answer to everything is a 2JZ swap?
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Old 04-16-12, 05:47 PM   #37
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You did a great job! You might want to attach those photo's so they never disappear.
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Old 04-17-12, 01:46 PM   #38
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Necessity really is the mother of invention...Saving this until needed.
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Old 04-17-12, 06:31 PM   #39
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Hahahahaha, I have to agree! Some more <3
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Old 05-01-12, 12:30 AM   #40
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Do you have the installed pics on the car so newbs like me know what to copy . Not sure how to connect the electrical piece/plug and where each hose is connected etc. thanks
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Old 05-01-12, 05:16 AM   #41
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Quote:
Originally Posted by bangdangvn View Post
Do you have the installed pics on the car so newbs like me know what to copy . Not sure how to connect the electrical piece/plug and where each hose is connected etc. thanks
I'll see if I can snap a few installed pics. I didn't think they would be necessary since its a direct replacement for an existing piece that's already on the car. Just find it, unplug it and throw the new one in. If you're not sure where it is, look up the FSM for the car.

There is no electrical piece on the new valve. Just keep the old one.
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Are you one of those annoying flamers that always thinks the answer to everything is a 2JZ swap?
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Old 09-17-12, 09:00 PM   #42
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i'm a newbie but how do you know if yours is bad and what does it actually do? i noticed when i was replacing vacuum hoses that the hose leading to this solenoid has 1 way check valves on it.

Thanks,
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Old 09-19-12, 09:22 PM   #43
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So this thread is a little confusing. So the op makes it seem like swap and go, but theres posts of reversing things, adding screws...Can someone who has done this post up some actual how to instructions. Like after putting the new piece on how to get the heat to work
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Old 10-03-12, 01:23 PM   #44
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im ordering one for my SC now should I just be taking off the old hoses and attaching them to both ends of this new assembly? Pics of the installed version would be sweet. Thanks
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Old 10-28-12, 09:03 PM   #45
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As someone mentioned earlier, AutoZone has these under the Everco brand. I bought one but didn't like how it is reverse. It closes when there is vacuum instead of open. So I went to their website and look through ALL their heater control valves. Found four that might be an exact replacement:

Everco / Four Seasons (ebay):
74004 (1.8L - 2.2L Celica)
74636 (3L Siena)
74637 (1.6L Corolla and Geo Prism)
74641 (2L Celica and 2L-2.5L Camry)

Who has time or access to these to find the best match? My local AutoZone don't have these in stock.
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Old 10-28-12, 09:03 PM
 
 
 
 
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