Can I put a tap in my heater line?

[Silenceisgolden]

Hello, on my 6x6 the heater cables are seized solid by mud, and the actuators have been damaged as well. Is it okay to just put a tap in the water lines to the heater? I know this is normal on some engines, but not sure about the layout of the Isuzu. I would hate to cook it.....
Cheers,
Paul

[DiscoMick]

Hello, on my 6x6 the heater cables are seized solid by mud, and the actuators have been damaged as well. Is it okay to just put a tap in the water lines to the heater? I know this is normal on some engines, but not sure about the layout of the Isuzu. I would hate to cook it.....
Cheers,
PaulLike this?
This is on a Puma Defender, not a Perentie, so I can't comment on if doing it to a Perentie is OK or not.
This one blocks boiling coolant from going to the heater.
Note that I was told that plastic taps may warp under continuous boiling water, so a metal tap is better. Try Pirtek.
Hope that is helpful. https://uploads.tapatalk-cdn.com/20190122/4c218a162e51af454be5d8c4dffa9661.jpg

[Silenceisgolden]

Thanks Discomick, I have had other vehicles with taps in the line, but I am not sure about the Isuzu engine - the Perentie heater has the water flowing continuously and uses air flaps to regulate temperature. I am hoping to regulate temperature via water flow instead.
Cheers, Paul

[Bamanuke]

Hello, on my 6x6 the heater cables are seized solid by mud, and the actuators have been damaged as well. Is it okay to just put a tap in the water lines to the heater? I know this is normal on some engines, but not sure about the layout of the Isuzu. I would hate to cook it.....Cheers,Paulhttps://landroverforums.com/forum/attachments/discovery-i-39/16714d1371242364-bypassing-hearter-core-heater-bypass-2.jpg

never mind, it would just take the heater out of the loop and you want to keep yours. I leaped before I looked!

[DiscoMick]

I wanted to stop the hot water circulating to the heater on my Puma because it was warming the air-con. Assume no air-con in a Perentie. [emoji4]

[bee utey]

Commodores up to VY used a 4 port heater valve that allowed bypass flow when the heater was turned off. Example:

NEW HEATER VALVE TAP HOLDEN VN VP VR VS VT VX VY 3.8 V6 4WAY COMMODORE | eBay (https://www.ebay.com.au/itm/NEW-HEATER-VALVE-TAP-HOLDEN-VN-VP-VR-VS-VT-VX-VY-3-8-V6-4WAY-COMMODORE/171316395217?epid=1194965081&hash=item27e340bcd1:g:g4IAAOxyBotTYJhb:rk:2:pf:0)

Use a vacuum solenoid and a dash switch to apply brake vacuum as needed and you've got cabin heat control on tap. [smilebigeye]

[Silenceisgolden]

Good suggestion, Bee utey, but I am more comfortable with electrics than vaccuum, and I already have an electric tap - but it is a single, not a bypass style like you suggest. I could always get another and use the second as the bypass if needed. I know many cars are fine with the heater flow simply blocked, I am just trying to find out if the Isuzu is happy with this.
Cheers, Paul

[DiscoMick]

When we lived in Thailand, our little Yaris didn't even have a heater, not did many other vehicles. The hot weather all year made a heater redundant, but air-con was vital.

[Phil B]

Hello, on my 6x6 the heater cables are seized solid by mud, and the actuators have been damaged as well. Is it okay to just put a tap in the water lines to the heater? I know this is normal on some engines, but not sure about the layout of the Isuzu. I would hate to cook it.....
Cheers,
Paul

It would be better to take the heater out of the circuit. A simple rubber hose joining the two ends of the galvanised heater pipes from the water pump will ensure the flow is maintained whilst isolation the heater.

[Silenceisgolden]

It would be better to take the heater out of the circuit. A simple rubber hose joining the two ends of the galvanised heater pipes from the water pump will ensure the flow is maintained whilst isolation the heater.

I do want to use the heater - I am really just looking for an alternative control as my cable system is pretty well shot.

[isuzutoo-eh]

Yes, you can. My County has had a tap in the line since before I purchased it over 100,000km ago.

[Red90]

Yes. You can install a valve. No issues.

[Silenceisgolden]

Great, thanks gents, fitting the electric tap will be a lot easier than finding and replacing the original cable system.
Cheers,
Paul

[Red90]

Fix the cable as well. It is $10 and 30 minutes of work. Very easy job.

[Silenceisgolden]

I think my Mortar Carrier has been upside down in a muddy swamp.... or something similar. The cable operating mechanism is seized solid with mud and rust, and someone has tried to un-seize it by force and bent things.

Also the electrics were a nightmare - lots of very un-professional fixes, such as wires poked into sockets and held there with masking tape, and lots of burned wires.... with the huge tangle of wires under the dash repairs were really not viable. So I have ripped all the electrics out and will start again making things a lot more accessible for the future. Having a little extra dash space by deleting the heater controls helps.

My lesson... it is not always a good idea to buy vehicles sight-unseen! But thankfully it does drive very well - well worth the effort to fix properly.