Thread: Heat from Heater core continuously??

I definatly like the idea of the cable tie on the vacum line. Will try that as it sounds simple and not too much mucking around! That's if I cant get access to put foam around the heater core at some stage! Thanks for all the replies, I now am armed with some information to sort out this very annoying issue for the long term! THANX

Originally Posted by bee utey

Buy a 4 port heater valve, remove the vacuum actuator, operate by cable or twist of wire. Easy. VS-VY Commodore V6 uses a 16mm version, some Fords use a 19mm version. The 4 port valve ensures constant flow through that circuit regardless of position, keeps engine block/head temp even.

Failing that use vacuum from the brake booster area, and operate the heater valve through a vacuum solenoid and a switch or microswitch on the heater controls. XD-XF Falcons used to have an ideal vacuum changeover valve on their heater box to turn off the heater valve. Hard to find these days I suspect.

Another trick is to just wrap a cable tie around the vacuum heater valve for now, remove it in winter.

Old old post I know but that's what you get when you use "search" LOL.
I have same sort of prob, constant hot air coming out of all vents since I bought it, I also disconnected heater hoses but read on a post that water flow through those hose's/heater is a plus for engine cooling.
Is that right?
I live in Hervey Bay so a heater is not a necessity except for windscreen demisting (it does get humid) or when we visit down south, the tap idea sounds interesting tough but I think it there would have to be a "H" shaped metal pipe with the taps on the heater side of the horizontal bar????
If it's the control gate not closing properly how easy is that to fix?

Originally Posted by steelo

Old old post I know but that's what you get when you use "search" LOL.
I have same sort of prob, constant hot air coming out of all vents since I bought it, I also disconnected heater hoses but read on a post that water flow through those hose's/heater is a plus for engine cooling.
Is that right?
I live in Hervey Bay so a heater is not a necessity except for windscreen demisting (it does get humid) or when we visit down south, the tap idea sounds interesting tough but I think it there would have to be a "H" shaped metal pipe with the taps on the heater side of the horizontal bar????
If it's the control gate not closing properly how easy is that to fix?

Don't know anything about the insides of the heater box but the 4 port valve has (as you'd expect) four hose connections, two in and two out. There are usually arrows marked on the tap body. The regulator inside the valve flips over to redirect flow from the heater to a loop return.

Here's one on a P76, allows water flow to the gas converter with the heater off: