Another O. L. T. DIY - In depth with the heater core control valve
12-29-11, 12:17 PM
#32
^ LOL
OLT. what are your thoughts on this?
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."
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."
12-31-11, 08:20 PM
#33
Keeper of the light
Thread Starter
iTrader: (17)
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.
Saved me a bundle.
05-01-12, 12:30 AM
#40
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
. Not sure how to connect the electrical piece/plug and where each hose is connected etc. thanks
Last edited by bangdangvn; 05-01-12 at 12:35 AM.
05-01-12, 05:16 AM
#41
There is no electrical piece on the new valve. Just keep the old one.
09-17-12, 09:00 PM
#42
Pole Position
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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,
Sid
Thanks,
Sid
09-19-12, 09:22 PM
#43
Lexus Test Driver
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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
10-03-12, 01:23 PM
#44
Driver School Candidate
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
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.
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.