Since I am getting my car ready to be back on the road this weekend, I was wondering if I had installed the heater hoses correctly. Does the hose from the water pump outlet go directly to the heater core, or does it go to the heater valve. Right now I have the hose from the intake going to the heater valve, but when I turn the heater on it doesn't get warm at all, so I figured that it might be the hoses. All the vacuum is hooked up correctly which brings me to believe that the hoses are reversed, or maybe that the heater control valve on the firewall is shot. Let me know what you think. This is a factory A/C and 302 Mav. Thanks! -Corbin
heater Corbin, regarding your question, it sounds to me that the valve is not opening up, to check it unhook the cable or vacuum, and manually move the valve into heat position, if that fails another idea is was the heater core flushed to make sure no obstructions were in the way? and one more are these new hoses I have seen hoses collapsed on the inner wall while looking like they are visually fine hope that helps
The way you have it hook up is correct, the water is heated threw the cylinders and is waiting for the thermostat to open. The direction of water flow is out of the manifold and back to the pump. The valve up stream from the heater core keeps the core cooler in the summer when you don't want heat. Having the valve the other way means the water travels threw the core and then to the valve. The valve doesn't stop water flow completly just slows it down to almost nothing.
Still, either way your heater should operate. The difference is minimal. In fact the later 5.0s don't have a water pump outlet to the heater, as they Y off of the one outlet at the intake manifold. I have a nice used A/C heater valve if you're interested.
Well, all the hoses are new, and the heater core is new. The only part of the system that isn't new is the heater valve, which is what I suspected originally. Thanks for the advise, and I'll get back to you on the valve. -Corbin
Make sure vacuum is being applied and releases to the valve at the appropriate times. I think vacuum is applied to hold it shut, then released when you turn the heat on. It may be in the controls, not the heater valve. They sell a universal valve at most part stores that fits almost all Fords, and is barely $10, if I remember right. Good way to go if you aren't worried about originality.
Corbin-I would give you the heater valve if you just pay for shipping. I know it works & I only replaced it because I found an NOS one on ebay. The only problem with the generic ones that the auto parts store sells is they don't have the correct mountng bracket.
Well, since I am pretty sure that the heater valve is the case, (I checked the connections of the vacuum, and all else) I will take you up on the offer. You can email me at cricket3@pacbell.net , and we can setup something. Thanks a lot. -Corbin
That's funny if you Y off the water would stop in both directions, I guess the new car use magic. I just took apart a 87 linclon LS and it had two steel lines one to the manifold and one to the water pump that run next to the valve cover under the throttle body. BTW everything that connects to the water pump is an inlet (bye pass hose, heater hose and the radiator hose) which is pumped into the block.
My apologies. You are correct. I got confused with the heater tubes that screw into the intake that do in fact Y off. There is in fact a hose from the waterpump to this tube. Sorry for the incorrect info.
didn't mean to get my panties in a bunch either............no harm no foul. _________________________ 72 Grabber (wifes) 71 v8 2dr pile
