So Who's had To Replace Their Heater Control Valve?

[blaze17]

I have been loosing coolant with no obvious signs of a leak. Finally found evidence beneath the heater control valve. Got it warmed up to pressurize the system and verify. Sure enough it had a steady drip from the drivers side of the valve. I barely touch it and the damn thing let go and blasted me in the face with coolant! I ran into the house to rinse the poison out of my eyes and realize how lucky I am this didn't happen in the heat of summer and burn me as well.

 

[Cadaverous]

I've had to do that. Broke in the exact same place.

 

[JayRolla]

Normal on all these older 4runner's. I hit the yard and all had same issue. It was my first NON OEM part I installed. Another member said there non OEM lasted 2 years.

 

[blaze17]

Iv'e never heard anything about this on the forum. I didn't know what it was until now. Is there any other plastic parts like this I should be concerned with?

 

[reelamin]

Iv'e never heard anything about this on the forum.

I have a brand new one sitting in a box. Ordered some hoses...threw it in...now I have it. Super easy to replace and not expensive.

 

[JWaldz]

Mine broke in the same exact location a while back.... On the interstate doing 75 :shocked:

 

[SinisterGrin]

I need to replace mine as well.... anyone have a part# for it?

 

[JayRolla]

Mine broke in the same exact location a while back.... On the interstate doing 75 :shocked:

Mine broke at 12,200ft at the top of Wheelers Lake. It was freezing, but some duck tape and not using the heater held her together till I got back home. Ass puckered entire trip.

 

[JayRolla]

I need to replace mine as well.... anyone have a part# for it?

Its the part # the autostore lookup gives you or Camelbacks website when you put in your info.

 

[RENUX]

8724035070

 

[SinisterGrin]

8724035050

 

[JayRolla]

8724035050

Come on guys. Yeah a man to fish. Don't give him the fish or they never learn.

 

[HammerHead]

Cable

Messing with this now and when I put the cable in the clip holder, it's locked in place and won't move, what an.m I doing wrong?

 

[oldskminitrk]

I had to do this to mine after the truck sat for years and the whole thing scaled over with lime....its pretty simple fix...74560 is the four seasons number I used.

 

[nissanh]

That's normal

Messing with this now and when I put the cable in the clip holder, it's locked in place and won't move, what an.m I doing wrong?

That's normal.

Also, if you add another valve for the heater core return line, the AC is super cold. I already have this mod and it keeps the heater core cold during the summer months.

You can do your own research: After a drive with the AC on, touch the return hose from the heater core. It is very hot. Heat conducts so heat enters into the heater core even you have one line closed. This heat ruins the cold air.

 

[HiluxSurf SSR-G]

nissanh,

with the addt'l valve, will the ac compressor still cycle even if the heater core is not hot? Just concerned that the sensor in the heater core will not give the correct reading to the ac controller.

 

[HammerHead]

I replaced mine yesterday and it was pretty easy, now I have to replace the cable. Can't find athe part number online. So I'm off to the dealership to see how much this is going to run.

 

[HammerHead]

Problem

Well here is the problem I have with the cable. It won't stay secure in the hole.

 

[DshButter]

Reviving from the dead, just blew my Heater Control Valve to pieces, same break as everyone else, but I have another valve on the hose above it that also broke and looks like was leaking longterm down on the HCV. Any idea what it’s called? Perhaps it’s the (optional) return valve someone mentioned earlier in this post to keep the A/C cold? See attached photo and thanks for any help!!

 

[HiLife]

That's not oem. That's part of a aftermarket coolant flush kit. Soposed to help in flushing the cooling system.
Some kits makes an adapter to connect a garden hose to aid in flushing.