Heater don't work...

[Bort62]

As in, the core isnt getting hot.

I can only assume that coolant isnt making it through the core because the car is getting plenty warm.

My question is, Does the wp push water through the heater pre or post the thermostat ?

The only thing I can think is that th thermo isnt opening (car runs really cool) and as such water isnt making it through the heater.

Heater worked fine when I got the car, but recently it just started blowing cold air. Ever since I replaced the radiator actually.

Core is cool to the touch, and so are the lines.

 

[Falcon62]

Heater worked fine when I got the car, but recently it just started blowing cold air. Ever since I replaced the radiator actually.

Core is cool to the touch, and so are the lines.

Sounds like an air pocket to me. Did you purge the system when you replaced the radiator? If not, you may have an air pocket blocking coolant from the core.

 

[MustangSix]

Cores are easily clogged. You may need a new one, but one thing you could try first is to hook a garden hose to it and flush it out.

if it flows ok, check the outlet and inlet on the head and pump to make sure those aren't clogged. You may have a chunk-o-crud lodged in those that restrict water flow.

Finally, check the heat mixer in the heater box. If the mixer door doesn't open, the core could get very hot and you'd still get no heat in the car.

 

[mugsy]

I'm working off of memory, but the water to the heater core should come from the block, or "pre T-stat" as you call it. Water is taken from the block and not the radiator becasue it is the warmest.

As for your cold air, I agree with the previous post, probably is an air pocket. The next place to check is the t-stat itself. My experience is when the heater doesn't produce hot air the t-stat is stuck open or the seal is gone. If this happens the water doesn't have enough time to transfer heat from the block.

I have also disconnected both hoses to the core in the engine compartment and flush the core with a garden hose. It gets messy, but it is a way the check that the core isn't plugged.

Mugsy

 

[Bort62]

Well, I took a look at it tonight and established that there is no water pumping into the core, fr either end.

Infact, I fully unplugged both lines and watched the water just barely piddle out of the driver side nipple.

This is at full op temp and letting hte car sit and idle for a good few minutes. For a breif period water started to come out with some sort of pressure, but it stopped after a few minutes.

So, the next question is how in the world would I get no pressur eout of these lines yet still have a fucntioning water pump that cools the car jsut fine ?

It is damn cold here, Help... lol

 

[Bort62]

Also, when I disconnected it the core was full of water. and I could blow air throught it with no restriction.

 

[addo]

The side outlet on the water pump, to the heater, is not fully open to flow. Drill it out and you should be fine.

 

[Bort62]

Really ? Interesting.

Ill have a whack at it tomarrow.

 

[addo]

Some pumps are cast with that hose "leg" not open at all. You are left to your own devices for opening it out, if so needed. Wanna be really rough? Use a mortar chisel (like a cold chisel, but only ¼" wide) and just smash it inwards. The chunks will slowly rust away...

 

[Anonymous]

The chunks will slowly rust away...

Like all good fords?


I'd have to say the easiest way to get it to go is to reverse-flush the core, make sure it flows water.. get a new heater tap, new hoses, etc.. but yes. If it flows water. I think you'll have to pull the dash out if its clogged up or all rusted or something to get at it..

 

[Asa]

Like all good fords?

........

get 'em!!

 

[xctasy]

No, he's forgiven. Both he and I have done the XE Falcon thing. They are sorta like the early FoxStangs, made of thin grade, High Strength Low Alloy Steel that likes to rust.


I few flitch plates, and good as. Discokin6 is just lucky he has a panno now...the C-pillar on the sedans is a real nasty moisture trap.

Patriotic, and Honest!!!! (Well, he is anyway)

 

[Asa]

ahhhh

gotcha!