Another Win
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5 Year Member
Joined: Sep 2016
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Might have even been you that briefed this PCV issue on another thread JBREW. After reading numerous threads, it seems that any engine issues I have requires Motorcraft parts if I want reliability. It is safe to assume this?
Senior Member
Joined: Apr 2014
Posts: 6,246
Likes: 797
From: Indiana
Originally Posted by white89gt
I'd replace the valve and the hose all at once, it's not that much more and prevents that damn elbow from rotting out... kinda like killing two birds with a pcv valve.... errr.... 
Senior Member
Joined: Apr 2014
Posts: 6,246
Likes: 797
From: Indiana
Originally Posted by Jbrew
Stay away from 3rd party. Third party valves can literally give these trucks the farts. Well, Fram valves are a little gassy anyway. Past experience lol.
They need to breath, Motorcraft valves have the proper openning.
They need to breath, Motorcraft valves have the proper openning.
98 F150 5.4L E40D/4R100
Joined: Nov 2006
Posts: 28,519
Likes: 7,631
From: MI
There's 2 different types of cold climate systems, both tap the heater core hard-line behind the passenger side head. That's why it's called a by-pass.
Heater core hard-line is mainline. By-pass circles around the heater core tube, heates the PCV then taps the hard line it in the rear behind the head. So you eliminate the by pass completely. from start to end.
I've got pics of it, yours is the other version I expect. Why do want to eliminate it, - leaking?
Last edited by Jbrew; Feb 20, 2017 at 10:18 AM.
Just block off the by-pass hose and vacuum cap everything.
There's 2 different types of cold climate systems, both tap the heater core hard-line behind the passenger side head. That's why it's called a by-pass.
Heater core hard-line is mainline. By-pass circles around the heater core tube, heates the PCV then taps the hard line it in the rear behind the head. So you eliminate the by pass completely. from start to end.
There's 2 different types of cold climate systems, both tap the heater core hard-line behind the passenger side head. That's why it's called a by-pass.
Heater core hard-line is mainline. By-pass circles around the heater core tube, heates the PCV then taps the hard line it in the rear behind the head. So you eliminate the by pass completely. from start to end.
98 F150 5.4L E40D/4R100
Joined: Nov 2006
Posts: 28,519
Likes: 7,631
From: MI
I'll get a pic of mine but it's not leaking it just seems like a lot of extra piping I don't really need. If I could find the correct heated pcv I would probably go that route out of shear simplicity.
98 F150 5.4L E40D/4R100
Joined: Nov 2006
Posts: 28,519
Likes: 7,631
From: MI
Actually, I believe there's 3 different set ups. Mine, being a 98 model had the first type. A tree at the side of body elbow and one hose that routed to the PCV which transfers coolant heat to the PCV. Just heat, no coolant.
The later models had an actual PCV with a coolant line surrounding it. Coolant flow wrapped right around the PCV valve. These trucks also us an insulator around the line that led back to the firewall. 2000, 2001, 2002 and 2003 models had different variations than the earlier models..2 that I've seen. The set-ups always improving getting heat to the PCV. But, more plumbing was involved with the newer set ups.
I'm guessing your looking for the wrap around PCV. You can still get them AFAIK. Might have to resource E bay for new/old stock parts. That's how I find stuff that's been discontinued anyway...if that's the case.
Last edited by Jbrew; Feb 20, 2017 at 11:12 AM.
I would off it if I didn't live in freezing temps part of the year.
Actually, I believe there's 3 different set ups. Mine, being a 98 model had the first type. A tree at the side of body elbow and one hose that routed to the PCV which transfers coolant heat to the PCV. Just heat, no coolant.
The later models had an actual PCV with a coolant line surrounding it. Coolant flow wrapped right around the PCV valve. These trucks also us an insulator around the line that led back to the firewall. 2000, 2001, 2002 and 2003 models had different variations than the earlier models..2 that I've seen. The set-ups always improving getting heat to the PCV. But, more plumbing was involved with the newer set ups.
I'm guessing your looking for the wrap around PCV. You can still get them AFAIK. Might have to resource E bay for new/old stock parts. That's how I find stuff that's been discontinued anyway...if that's the case.
Actually, I believe there's 3 different set ups. Mine, being a 98 model had the first type. A tree at the side of body elbow and one hose that routed to the PCV which transfers coolant heat to the PCV. Just heat, no coolant.
The later models had an actual PCV with a coolant line surrounding it. Coolant flow wrapped right around the PCV valve. These trucks also us an insulator around the line that led back to the firewall. 2000, 2001, 2002 and 2003 models had different variations than the earlier models..2 that I've seen. The set-ups always improving getting heat to the PCV. But, more plumbing was involved with the newer set ups.
I'm guessing your looking for the wrap around PCV. You can still get them AFAIK. Might have to resource E bay for new/old stock parts. That's how I find stuff that's been discontinued anyway...if that's the case.