Valve in Heater Hose

Harm? No, but you should drain the heater core. With no circulation through the core, you are asking for trouble. If the core is the original('95), that may be a moot point anyway since 10yrs is the mean lifetime of a heater core. I would pull both hoses off the core and couple them together with a piece of pipe. I suspect your main complaint is getting heated air through the ducts when it shouldn't be?? If your system uses a cable to operate the blend door, is it properly adjusted? If it is, then most likely the blend-door is the trouble. Ford use to use, and may still, plastic rivets to attach the door hinges to the plastic duct-work. The plastic rivets eventually break/wear out and the blend-door does not close properly. When the door doesn't seal the heater core off from the duct-work, heated air will escape into the ducts. Fixing that door ain't much fun, but not too difficult either. I had to buy a new door and install it. I used Aluminum rivets instead of the plastic ones.

Probably more answer than you wanted.....

Dave S(Texas)

mail box full to defeat spam....which is what the mail box is full of!

yeah, especially that side-splitter about draining the core..................

Don't recall anyone asking for any comments from the peanut gallery. Never used air-pressure have ya? Simple to use and does the job.....Look bub, I was only trying to give the man some help. What's your angle? Well, nevermind. You know everything already.

...one thing I have found out, there are soooooooooo many experts on the net.........

Joe

my POINT was that a 'dry' heater core will likely leak when re-filled

but hey, you're the know-it-all, keep on giving s***ty advice

Just remember - #1 rule of USENET is "never argue with a fool" It's like trying to teach a pig to dance.

A valve in the heater hose is good. A valve in each hose is better. But here's the deal: In the summer close only one valve. If the heater core ever blows out, you'll need to close both. Could happen summer or winter.

Splicing the heater hoses together is a bad idea.

And just in case someone does not know: Never pull a heater hose off of the coil. Cut it off. The coil can't take the stress of haveing an old hose pulled off of it.

I you have good coolant, water sitting in the heater all summer isn't a problem. It simply does not matter.

If you have an F-series truck, don't fear to replace the heater coil. This is one of the easiest vehicles existing for changing heater coils. Should cost under thirty bucks, if you do it at home.

Bill M