How to connect Vacuum Hose on rear intake manifold
 

My truck showed codes P2195 AND p2197 for lean O2 Sensors and was running rough at idle and sometimes stalling the engine. I found that a vacuum hose was off that ran the 4wd and fuel regulator. It connects to the passenger side rear intake at the bottom. I can't find any directions that will allow me to re-connect without taking off the intake manifold. Does anyone have a suggestion???

Thanks

How to connect Vacuum Hose on rear intake manifold - Fix
 

I know this post is old, but I just had the same problem and I found the fix.



I replaced my IWE solenoid and when I was done I discovered I had no vacuum. Then my engine light came on with codes P2195, P2197, P0171, and P0174. It didn’t take long to figure out I had a vacuum leak (probably with the IWE system). Then I discovered it was the hose coming off the back of the intake manifold, yikes!
I came across this post while searching for a solution. I didn’t find any except for the “remove intake manifold” ones. After trying to reach the port on the back of the intake manifold, and couldn’t, I took my truck into the local Ford Dealer hoping they had a fix. After being in their shop all day I got a call that it wasn’t fixed because they could not get to the port, they wanted to charge me 3 hrs labor and then another $275 or more to remove the intake. After saying no and talking to the service manager he knocked it down to their 1 hr minimum (still too much I thought) but whatever.
Now I was back to the same problem which I had to fix and I found one. I picked up an inspection camera from Harbor Freight for $79.99 on sale.



http://www.harborfreight.com/media/c...mage_11494.jpg


Feeding the lens down behind the intake manifold and the firewall after some time I was able to locate the inlet port that the IWE hose fell off. I then taped the flexible lens tube down so it couldn’t move. Next I move the IWE vac line around, up and down, etc until I got it lined up on the end of the inlet tube. At that point I started the engine so the inlet tube would have a vacuum on it and help pull the IWE vac line onto it. I wiggled the line a little and I could see it slowly move onto the port a bit more. That was about the best I could do at that point. It still had about 3/8” more it needed to go on. I thought about using a stick but I didn’t want to knock it off again. Then I thought I would get a baggie, I put a small rubber hose in it and taped the end shut around the hose. I pushed the baggie down between the firewall and the intake manifold until I saw it behind the IWE port. I started the engine again and then started blowing into the rubber hose inflating the baggie like a balloon. The baggie started pressing against the IWE line and pushed it all the way onto the port within seconds. Success! The whole process took about 30 minutes.


Paul 04' FX4

Glad you got it fixed. I've had the intake off a couple 5.4s and I can fix my hand back in there and get with out much problem. Its the one going to the brake booster that is a pain.

Hey guys

Realize this post is quite old but I've hit the same situation with the IWE vacuum line coming off the back of the intake manifold. I've got a camera as well and went looking for the inlet port that pkelly825 was referring to but I can't locate it.

Is there a specific place I should be pointing the camera to find it? It's a tight fit back there and I don't know where to start or even what I'm looking for.

Hope you can help! Maybe a real photo of the rear of the manifold with an arrow pointing to the inlet would be perfect! Or a diagram?

Thanks kindly!
Ty

Morning seems like every 2 years this gets a post....
I was doing phasers and timing chains on my sons 05 5.4 larriat, and the vac line form the brake servo came un done. Is that the one that goes to the back of the intake manifold ( cant seem to fine where it connects, some where directly behind the engine center line, on the fire wall

Any gudiense would be appreciated.

You're not kidding. I couldn't get the clmp back on to save my life. Eventually just shoved the hose connector on as hard as I could, and called it good enough. That hose transfers to a hard line if I recall, so it really can't flex, so I don't think it can fall off. And it fits on the male end pretty stiff, so I don't think it'll lead to a vacuum leak.

If memory serves me right, you have to go underneath the truck, on the drivers side to be able to reach up and reconnect the hose. You may have to take the shift cable mounting bracket off to be able to get a better view but reinstalling that hose is done from underneath. I had a pdf file on the proper way to install it, I will look for it if you can't get the hose on. I sent it to another member via email a couple years ago and it worked for him, so it has been tried and tested as accurate.
Let me know if you need it. Good luck.
Tom

Here you go, pdf should be attached.

Thanks for the detailed instructions it is kicking my but!

Is the conection part of the intake manifold, is that an eaiser route?

From the description in the pdf instructions, the hose fits on a fitting that is part of the manifold. Not sure what you are asking is an easier route, I would give the instructions a good try or two before removing the manifold to get the hose back on, it may save you some extra time and effort. Good luck.
Tom

Thanks, finally got it, a 2 hour detour I did not antticipate.

Just fired her up, got Fail safe mode, need to check for something not connected....

Good job, glad you got it on finally. Good luck with the fail safe mode, let us know what it was.

Success, after an unexpected 2 hour detour, got the vacuum line back on. Fisnished the phaser and timing chain install.

What a lost weekend......

Thanks Vintageman for the link and photos it was a life saver!

No problem, glad I could be of assistance. Good job on getting it all worked out. Did you figure out what caused the fail safe mode?

Yes, connector to intake was off.

Clicked it on, stated up no safe mode but 6 throttel sensor codes. Reset codes, took on 30 mile road trip 0 issues!

Regarding the reason for the repair, The phasers where old bu no sign on "failure" , the timing chains @95k miles where stretched, and guide on both side where broken so they had to go. the noise is still there but not as noticeable. earlier I had replaced the cam solenoids and that had a big impact / illiminated the rough idle. ccAlso did plugs and coil packs while i was in there.

Sorry to bring up a old thread but do you still have the PDF file? Is it the same with a 06 5.4?

Here you go

vintageman, Your instructions appear to show the vacuum booster hose on the drivers side. My instructions from a few years back refer to the IWE hose on the passenger side. From everything I've read and discussions with Ford, the IWE hose cannot be accessed from the top or underneath. Did you reconnect a IWE hose?

Totally different hoses. This vacuum hose is the brake booster to the back of the intake manifold. I haven't had to mess with the IWE system but there is a solenoid on the passenger side firewall behind the battery with vacuum lines to it for the IWE system. I am not sure if the IWE goes to the intake or not.

It T's off right next to the brake booster, so same line...

IWE is a separate port off the passenger side of the intake manifold. It is independent of the booster hose on the driver side. It is a single line coming off of a single port. Due to the cramped location the IWE is a pain to replace.;) The photo below shows the IWE location relative to the booster port.


https://cimg0.ibsrv.net/gimg/www.f15...b434db39e1.jpg

Is that an '04? AFAIK, that is the only year that a)used two ports and b)used the insulation around the lower portion of the manifold. Here is a pic of my '05 manifold. Notice, only one port. The other port was not even molded into the manifold. My '07 is the same way...

Just wanted to add my experience on the IWE manifold vacuum leak. Maybe help a few others get it sorted cause it seems to be pretty common.

2004 f150 5.4 3v. Mine blew off after a back fire during a hard start, all the lean codes were set, rough idle and stalling. I managed to find the leak by making a smoke machine, 2 holes in a sealed bucket, one for air pressure, the other with a lit cigarette inside the bucket and a line to one of the vacuum hoses. blocked off the intake and saw smoke coming up the firewall.

I was able to get access to the vacuum port by disconnecting the 4 bolts that hold down the fuel rail, wiggling it to release all injectors (leaving them attached to the fuel rail is best, if they pop off fuel leaks out). After lifting it I could get my hands down behind the manifold. Looking at the pictures provided in other posts really helped, I was able to find the port and get it back on fairly easily once i got my hands in there. I did have to fully lie down on the engine though.

Hope that helps!

Hopefully it works thank you for the file.

My son's 2004 f150 5.4. Suddenly had vacuum leak symptoms. Took me a lot of time to fine a little info problem.
this thread was the best info so far.
question: Has anyone found a new rubber elbow for the red tube on passenger rear intake .

no one has mentioned having. A rubber elbow y connector. Red tube from. Fuel pressure sensor. And the Iwe red tube join here.

Im planning on replacing y elbow with a single input and placing a "T". And connect fuel pressure sensor where it can be
easily accessed. Hopefully that will make it easier to put new rubber elbow on rear intake nipple.

Any comments are really welcome .
Gord
Vancouver BC

RB 2004 Ford F150 Lariat Crew Cab Brake Booster Vacuum Leak
 

;)Great Thread for the 2004 Ford F150 Intake Manifold Vacuum leak. I had the motor replaced with a Ford Rebuild. Now year later the brake booster vacuum line has broke at the intake manifold. I'll need to R&R it, but there does not seem to be a specific part for the 2004. Does anyone know if the 2005-2006 Vacuum line assembly will fit on the 2004 Ford F150 5.4 L Lariat Crew Cab intake manifold vacuum port?

Part Number: 6L3Z-9W431-A

Attached is a picture from the inspection camera
https://cimg3.ibsrv.net/gimg/www.f15...3adb875d94.jpg
Booster Vacuum Hose view. See the hose clamp and the split hose
https://cimg6.ibsrv.net/gimg/www.f15...97ee9b14d6.jpg
Close up of the split vacuum hose to the Brake Booster Vacuum hose on the driver side back of the intake manifold. Harbor Freight Emerson Inspection Camera at night from below.
https://cimg7.ibsrv.net/gimg/www.f15...679cd8c4d5.jpg
Bonus Picture of the IWE vacuum connection from above on the passenger side of the motor.

Remove fuel rail and you can get back there to plug the vacuum hose up on the left side of the engine. (Driver)

Updated on Hose Fix
 

Ray,

Thanks for the help. I took the photo's over to my local ford dealer and they repaired with broken hose under warranty. I was not expecting that. It took a couple of try's due to the flutter valve control solenoid had failed, which had been replaced after the rebuild. All under warranty for now charge. Did not believe that the dealers 2 years parts and labor on the solenoid was so rock solid, nor that the 3 year unlimited mile warranty on the motor would be honored. Good going Ford!

RB

You're welcome

IWE Solution for reconnecting Vacuum Hose for 04 F150 5.4
 

Read this whole thread and the only solution I saw was the one posted by @pkelly825 but the $79.99 for a camera was too much. I've attached my video I took of how I went about it. All I used was my phone, as a camera, a 1/4" drive 6" extension and a blanket over the passenger side bank (bank 1) just to make the position tolerable. Most of the movement was done with the hose itself since it is stiff enough to do so. Video is taken from behind bank one. Took all of 8 minutes.


Hope this helps.

Fixed
 

Removed the air intake, removed vacuum hoses and popped off the fuel rail. I was able to reach back there with no problems. I have normal size hands and I did not have any trouble. I wanted to put one of the hose clamps with the key but I had already attached the hose and could not get it back off. Only other problem I had was one of my injectors came off the rail and I did not see the o ring come off. When I did my road test it was leaking fuel. Luckily I found the o ring and it is running great now.

Connect in 5min
 

My son who has hands like a piano player. Not very big and longish fingers. Came out yesterday to watch me laying on top of the engine, on a piece of rug of coarse, trying to get my hand down the back of the engine to reconnect the passenger side vac line. I had my notebook there hooked to a inspection camera so I could see the line hanging in front of the port. Just couldn’t reach it. Sigh!!!
He told me to get off the engine, climbed up laid down put his left hand down the back and felt the hose and with those longish fingers pushed the line on. Then he put on a glove for thickness so he could push a bit harder. Got off the truck smiled and went back inside. Me trying for a hour and a half and him succeeding I’m five minutes. Didn’t even look at the notebook. So find someone with not too big hands and longish fingers. 👍

2008 f150 fx4
 

I have the same issue but I'm not sure if I'm supposed to have a Hose on the backside of the intake manifold on the passenger side. Take a look at my video, let me know if you have experienced this on a 2008 4x4. Engine runs rough at idle. No check engine. Diagnostics look good, no lean.