Heater control valve

[3rdgen Guy]

Hey guys, my heater valve went on my 89. Do you guys think it's worth it to buy a heater control valve from the dealer for 150 or should i just buy a used one?

I see the used ones going for about 20-40 bucks.

 

[hvyman]

you can bypass the solenoid and try putting direct vacuum to the top nipple. with the engine running the valve arm should go up.

also depends on wat you want out of the car. used one could crap out anytime and the new one wont.

 

[3rdgen Guy]

i did run a vac to the top until it started leaking coolant. Thats when i took off the vac and started freezing on the way to work in the mornings. Afternoons...not so bad. I drive with my hood on lol.

 

[GrimJack]

Used ones don't tend to last, they've been through the same kind of use as the one that already died.

After trying 2 used ones, I went with a new one from the dealer.

 

[Dunckel]

After trying 2 used ones, I went with a new one from the dealer.

Same story here.

 

[Bri7man]

Napa sells them for about $60 last time I checked.

 

[Asterix]

Mine cracked while driving, spraying coolant all over the exhaust manifold. After a tow home, I bought a used one. After installing it, I bought a new one from Toyota. I decided I didn't want it to break again.

Unfortunately, the hose clamp on the input side gets tightened too much and the plastic pipe just can't take it for long.

Asterix

 

[jetjock]

Geo Prism/Corolla valve. $45 new. I also replaced the factory screw clamps with CT band clamps. Never had a problem again. Had 10 years on it when the car left me...

 

[hvyman]

^which years like a 95 or something?

 

[Zumtizzle]

Geo Prism/Corolla valve. $45 new. I also replaced the factory screw clamps with CT band clamps. Never had a problem again. Had 10 years on it when the car left me...

They changed the design on the Geo Prism and Corolla Heater control valve.

It takes some work...but nothing too hard.

 

[Zumtizzle]

^which years like a 95 or something?

89 but there's more involved. I'll do a write up someday.

 

[jetjock]

90's. The only work involved is toss the bracket it comes with and swap actuators. That's all I had to do on the one I had at least...

 

[Zumtizzle]

The throw is reversed on the aftermarket ones. and the levers don't swap without some filing.

I'd snatch up a new one from Toyota for the 89 corolla..

 

[jetjock]

Huh. I remember there's holes on both sides of the valve so it can mount either way to accommodate the throw and the lever just screwed on. It's been a long time though.

Prism and Corolla are the same car, Alex...

 

[Zumtizzle]

Sorry Alex, I'm just unclear.

New aftermarket Four Seasons Heater Control Valves for the Corolla or Prizm are reversed. On the supra when the leaver is down the valve is closed and it's not flowing water. On the new aftermarket valve; when the leaver is down (speaking from the supras point of view) the valve is open, and the lever calibration is quite off.

My fix for this was to take a file and file down the nylon on the new valve until is was rounded and copied the supras "calibration" (so when it's fully closed you actually have some flow), and to remove the filter going on the VSV and attaching the vacuum line there so when the motor is running the heater valve is closed and when the vsv receives signal to open the heater leaver drops and you have water flow.

Nothing too hard and you save 30+ bucks.

 

[jetjock]

..On the supra when the leaver is down the valve is open and it's flowing water...

Say what? On the supra when the lever is down the valve is closed and flow is almost stopped (it's designed to always flow a little).

Keep in mind "down" to me means towards the ground

 

[Zumtizzle]

Huh. I remember there's holes on both sides of the valve so it can mount either way to accommodate the throw and the lever just screwed on. It's been a long time though.

Prism and Corolla are the same car, Alex...

Wait a second.....................You're talking about this? (which is correct.)

GEO PRIZM (1993 - 1997)
GEO PRIZM LSI (1993 - 1997)
TOYOTA COROLLA (1992 - 2001)
TOYOTA COROLLA ALL TRAC 1993
TOYOTA COROLLA DLX 1992
TOYOTA COROLLA DLX ALL TRAC 1992
TOYOTA COROLLA DX (1993 - 1997)
TOYOTA COROLLA LE (1992 - 1995)
TOYOTA COROLLA LSX 1992
TOYOTA COROLLA SR5 1992
TOYOTA COROLLA SR5 ALL TRAC 1992

I'm talking about this.........Which would be the one with "reversed" activation. And incorrect. (What i'm using.)

GEO PRIZM (1989 - 1991)
GEO PRIZM GSI (1990 - 1992)
GEO PRIZM LSI (1990 - 1992)
TOYOTA COROLLA (1989 - 1991)
TOYOTA COROLLA DLX (1988 - 1991)
TOYOTA COROLLA DLX ALL TRAC (1988 - 1991)
TOYOTA COROLLA FX16 1988
TOYOTA COROLLA FX16 GTS 1988
TOYOTA COROLLA GTS (1988 - 1991)
TOYOTA COROLLA LE (1988 - 1991)
TOYOTA COROLLA SR5 (1988 - 1991)
TOYOTA COROLLA SR5 ALL TRAC (1988 - 1990)

 

[Zumtizzle]

Say what? On the supra when the lever is down the valve is closed and flow is almost stopped (it's designed to always flow a little).

Keep in mind "down" to me means towards the ground

Opps.

Yep I took the little flow into account...lol

But I made the wrong valve work.

 

[jetjock]

Doh! Yes, I'm talking about the first one with the bracket. That's what I used. Checking of my records shows it's for an early to late 90's Geo and *not* the 89 I stated. So some good came out of this after all

 

[Zumtizzle]

Now i need to buy the correct one and see if i can swap them and trick the kid at VatoZone.


Thanks Alex.