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That's good to know. Overall, I think it pays to know the details of the system you're working on. I'll bet some of the fancier models with zone control heating have different parts than base models.
Here's something I found, for 2003 - Some, maybe all, of the 2003 F150's do have a "heater control valve". Apparently it controls coolant flow through the heater core. Not clear why a restrictor would be needed if there is a control valve. Might be that mine doesn't have one.
Here's the 2003 valve. I'll have to track it down next time I have the hood up. Looks like it's vacuum controlled so there might be a relay and control valve associated.
Looks like 1999 has a valve and a restrictor. Not sure if they are combined. Just wandering down the rabbit hole...
Gates says reuse flow restrictor:
Mine is an '01 5.4, XL w some T, options.
I have seen 250's w a valve. If I could make sensible upgrades, I probably would.
As one fellow mentioned though, w a full bypass, or stoppage, you don't get antifreeze's anticorrosion components flowing through..So maybe, a hole through the valve flapper, if that is doable, or like your AC, run it once a week for 5 minutes, come whatever weather.
Re-using the restrictor is not a fun task. I've put several back in on Mustangs over the years.... I'd buy one of the Motorcraft hoses with it already installed.
Not sure if this will help anyone on their F150, but this appears to be a much easier solution than my 86 and 89 Mustangs had. They use 5/8" hose as well.
Re-using the restrictor is not a fun task. I've put several back in on Mustangs over the years.... I'd buy one of the Motorcraft hoses with it already installed.
5/8" adaptor, on what remained of the Dorman 5/8" quick connect supply hose to the core. Putting the restrictor into a 3/4" hose is decidedly easier, but even fitting the 5/8" onto the metal engine fitting was really hard. Using 3/4 seemed ideal, and 5/8" brass 90's are harder to find. The 90 adds a bit of restriction. Downshot, the hose blew at its most stressed point & I used what I found available.
From the bottom right, clamp 1(input point), 2, brass 90, Clamp 3, 4 holds the restrictor, clamp 5 on the 3/4 end of the 3/4">5/8" adaptor, 6 on what remained of the Dorman 5/8" quick connect supply hose to the core. Putting the restrictor into a 3/4" hose is decidedly easier, but even fitting the 5/8" onto the metal engine fitting was really hard. Using 3/4 seemed ideal, and 5/8" brass 90's are hard to find. The 90 adds a bit of restriction at the most needed point.
what year is this truck/vehicle we are speaking about ?
KH 709 is a "supply" heater hose for the 5.4 L 10th Gen F150 not the 4.6 L.
there should be clamps on both ends of the hose....
So to summarize: the 5.4 L 10th gen F150 has 3 heater hoses: KH 735 (return), KH709 (supply hose), KH 733 (inlet)
4.6 L only has: KH 733 (supply hose) & KH 735 (return) .
So where is the "supply hose" for the 4.6 L 10th gen F150 ?
where is the clip for the end of this hose since the heater hose connector is on the other end of the hose ?
