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suprastanger507mgte
12-12-2006, 03:31 AM
OK, My heater is not working after this swap. Checked the heater wires and they are hooked up correctly to the harness and the coresponding dash harness . ( 1jz )
Heater valve works when vacumn is applied directly bypassing the vsv.

Tried two different VSVs and tried controlling the heat with the controls, and still not working.

I applied a direct wire to the heater vsv plug and nothing happend. ( wire was from the dash harness coming out of heater controls? ( not sure of this)

I have tried another working hear/climate controller as well and no luck.

Anyone else with a 1jz swap having this issue?
Big Wang Bandit
12-12-2006, 03:37 AM
Moe and I were talking about this today, I really want heat in my 1JZ.

Is it possibly, because Japanese cars came with a mechanical linkage(arms) for their climate control, that ours just hrow it outta whack?
dejacky
12-12-2006, 05:45 AM
check your vacuum hose routing and make sure a fuse isn't blown. When I tripped a fuse, my 12v cigarette lighter & heater/ac wouldn't work either. I replaced the fuse and it fixed everything :flamed:
suprastanger507mgte
12-12-2006, 12:25 PM
Well the fuses are fine. The blower works, it just does not control the vsv valve to control the heat.
suprastanger507mgte
12-12-2006, 12:26 PM
Moe and I were talking about this today, I really want heat in my 1JZ.

Is it possibly, because Japanese cars came with a mechanical linkage(arms) for their climate control, that ours just hrow it outta whack?

Kyle,
I don't think that would be an issue with the linkage type. We are using the same controls for ac and that seems to work for those who have ac. The wire is still the same.
Satan
12-12-2006, 12:40 PM
Unless U used a 1JZ out of a Soarer, I dunno why it wouldn't work. With the JZA70 harnesses I had, they still had the little 2-wire connector to the VSV and my heater worked.

So, I suggest if you don't have that connector, that you get one from the junkyard (should be found in other Toyotas, right?). Or, pull the connector off a spare 7M harness and manually wire it/connect it to the dash connector (dunno which one, but should be easy enough to find).
inline6
12-12-2006, 12:47 PM
Moe, may be completely unrelated to your problem, but I lost heat temporarily after my 1j swap when the vacuum line to the VSV? (on passenger firewall) popped off. See if the line is pulling sufficient vacuum to operate it or if its even attached.

When it happened it made my system only blow cold air out.
JustAnotherVictim
12-12-2006, 12:50 PM
Ditto on that.
Big Wang Bandit
12-12-2006, 01:45 PM
My system only blows cold air out.

Moe and I both have the VSV bypassed.

Anyone got any pics?
mattjk
12-12-2006, 01:56 PM
pull the glovebax and make sure the heater core flapper is not stuck/sticky.
Big Wang Bandit
12-12-2006, 01:59 PM
Ill have to try that. I can change the speed of my cold air. But Thats the problem, its cold. Can you get me a close up of your VSV and the hoses Matt?
mattjk
12-12-2006, 02:00 PM
dang, you bought a bucket! sure, I can take pics tonight.
Big Wang Bandit
12-12-2006, 02:02 PM
Hah!

It was scary driving over the grapevine with my window fogging up andno defroster in the rain, at night.

Thanks Matt.
mattjk
12-12-2006, 02:03 PM
until then, does this help at all?

http://www.pbase.com/mattjkphoto/image/70838431/original.jpg
mattjk
12-12-2006, 02:04 PM
Hah!

It was scary driving over the grapevine with my window fogging up andno defroster in the rain, at night.

Thanks Matt.
yeah, A/C and heat is a must for those reasons. Be sure to come back down and have Aaron fix the A/C.
Big Wang Bandit
12-12-2006, 02:12 PM
A closeup would be better, Thanks for offering Matt.

Since I can change speed I assume the heater flap works correctly, Its just a matter of geTTing the VSV all good, then it may be an electrical problem
mattjk
12-12-2006, 02:13 PM
speed? speed has nothing to do with the heater flap.
mattjk
12-12-2006, 02:14 PM
the flap controls how much air is diverted to the heater core, thus controlling the amount of heat. Speed is controlled be the rpm of the fan motor.
mattjk
12-12-2006, 02:18 PM
mine was not working either. Problem is, there is a foam seal. After time, the seal breaks down and becomes sticky... The sticky foam prevents the flap from opening back up.

I like to keep my temp set to 76 or 77. Keeps the flap open, and coolant constantly flowing through the heater core. It's a good practice to do.
suprastanger507mgte
12-12-2006, 09:36 PM
If the foam was holding the flap shut, then how would one explain the heat coming through when the vacum is directly plugged into the heater valve bypassing the VSV - solenoid?

The small lever on the valve moves up and down as you apply and remove the vacum hose. THis should relate to the fact that the flap door is also opening and closing.
Big Wang Bandit
12-13-2006, 12:00 AM
Moe, I vote for a day of troubleshooting.

Got any pics Matt?
mattjk
12-13-2006, 12:32 AM
If the foam was holding the flap shut, then how would one explain the heat coming through when the vacum is directly plugged into the heater valve bypassing the VSV - solenoid?

The small lever on the valve moves up and down as you apply and remove the vacum hose. THis should relate to the fact that the flap door is also opening and closing.
obviously we had two different problems then.
suprastanger507mgte
12-13-2006, 01:06 AM
obviously we had two different problems then.

Probabaly, but I will definitely be checking that flap door in the morning.
I wanted to make sure that it was directly related to the heater valve closing up and down and at that same time the door was opening/closing . I can actually hear the flap open...
suprastanger507mgte
12-13-2006, 01:06 AM
Moe, I vote for a day of troubleshooting.

Got any pics Matt?

I will have to think about that on your car. That harness is jacked...
suprastanger507mgte
12-15-2006, 07:21 PM
Well. This is what I found after looking at the 1jz and the 7m CC diagram.

There is a yellow wire and the black/yellow wire at the vsv connection near the vlave.

According to the diagram, the Yellow wire comes from the fuse box near the kick panel. It is coming off of a 7.5 fuse . This yellow wire is part of the gauge fuse circuit.
This is the power wire and should have juice. I know mine had no Juice when I tested for power on this wire.

So from Fuse box, Yellow goes to the VSV, then out the Black /Yellow wire to the IH1 connector. This should be the one for dash connector.

I don't think this wire is wired up correctly in the main harness.
I will try this tomorow. :

1jZ AC wiring :
http://1jz-gte.us/documents/SubDocs1/1JZAC.pdf

7m AC wiring :
http://1jz-gte.us/documents/SubDocs4/25_D.pdf