Started throttle body removal on my 2002 F150 5.4 using great how-to-guides and posts from this forum. I'm definitely green here so could use some additional guidance.

Referencing PIC 1 below:


1. Auto Parts Store searches tend to consider just the part circled in blue (#7) as the throttle body. However, most of the posts seems to include the whole unit (front and rear) components as the throttle body. Is the rear section considered part of the throttle body or is it referred to as something else?

2. One of the articles said to remove the connector #6. I don't see a need to remove assuming I am removing the throttle body bolts at #5 and #4 (bolt not visible). Am I missing something here?

3. Looks like there may be some type of silver gasket between the components where bolts #4 and #5 are. Is this correct? If yes, what is this gasket called so I can buy a new one?

4. Do the hoses at #2 and #3 just pull right out? I think there is another hose behind them. Does it just pull out as well? Pretty tight back there. I have a closer up picture of these. See PIC 4 further below.

5a. Hose #1 has the word “Fuel” on it so I'm taking them at their word here that this is where the fuel enters the throttle body. Should I remove the hose at the throttle body or at the other end?

Reference PIC 2 below:


5b. If I should remove at the end opposite the throttle body, do I remove at #1 or at #2? If at #2, how exactly does it come off?

5c. Regardless of whether I disconnect at the throttle body or at the end above, am I going to need to plug the hose with something once removed to prevent fuel from coming out?


Regarding PIC 3 below:


6. Left rear of the throttle body. How do these hoses come off? Do all three slide directly out to the left as a unit? Do I need to do anything with the metal clasp?

Regarding PIC 4 below:


7. Closer up picture of right rear hoses referenced in question 4.

Thanks in advance for the help and patience digging through all my questions in the post.

 

The throttle body is the whole deal #1 in your pic. Unbolt the 2 EGR bolts the 4 bolts holding the throttle body to the intake manifold un plug the wire connectors the vacuum lines. Undue the throttle cable and cruise control cable.
When you have it off it is a good time to inspect teh PCV elbow at the back of the throttle body and remove and clean the IAC on the back of the throttle body.
You have the water heated PCV set up(pic 3) so you gotta remove the clamps and remove those water hoses

 

5a: There is no fuel in that hose, it's the evap purge hose. It has to be fuel-duty because it carries fuel fumes. Liquid fuel goes to the injectors, not into the throttle body.

 

^ What they said.
I did this last fall for the first time after work. Took no time at all. Very easily done. Only forgot one hose when putting everything back on . Couldn't figure out why it wouldn't start. Figured that out pretty quick

 

It is the throttle body and throttle body elbow if you are removing for cleaning, On the 2002 you should have a rubber gasket between the elbow and manifold which should be reusable. But if you remove the throttle body from the elbow it is best to replace the gasket.

And that silver gasket you are referring too is the egr gasket. They typically fall apart when they are removed or half stays on one side and half stays on the other. They are about $5 if I remember so order a new one of those.

The hoses all come off individually on the coolant tree (3 hoses, left side of throttle body) and they have coolant in them.

 

Thanks everyone for your input. Regarding removal of the evap purge hose. Is one way easier than the other in terms of removing at the throttle body or at the other end? If at the end opposite the throttle body should I remove it at point #1 or point #2? See PIC 2.
I'm asking because one of the pics in a cleaning guide showed this hose still connected to the throttle vs. being removed at the throttle body.

Thanks again.

 

Instead of risking breaking the clip at the evap side, just remove it from the throttle body. Grab it with a pair of pliers, give it a little grip and a twist to break it loose. Then twist and remove.

 

Ok...slowest throttle body removal project you've ever seen.
I need to get the two EGR bolts out. The front facing one has some bracket anchor slid over it. See blue circle in PIC below. Is there an easy way to remove this without removing the entire bracket assembly (blue lines)?
To be honest, I haven't quite figured out exactly how to get the entire bracket assembly off.

Note: 2002 5.4 Lariat 4x4

 

that hold the DPFE and its gotta be removed 10mm deep socket with a small extension...just take it off and lay it down then you take off the egr bolts..

 

Thanks.
Does the DPFE need to be removed from the bracket assembly (marked with the blue straight lines in the pic above) or do I remove the entire bracket assembly with the DPFE attached?
Seems like a recall a pretty stiff hose being connected to the bottom of the DPFE.

 

no. Just unbolt it and set it aside. There is also a bolt in the manifold that has to come off in order to remove the bracket out of the way.

 

Alright...slow but making progress. I definitely overcomplicated the DPFE bracket. Thanks for clearing that up. One bolt and the whole thing was out of the way.
I was able to get all the TB bolts. Didn't remove them completely yet because there are still some hoses I have not yet been able to get off.



How does that right rear hose at the bottom (hose a) come off?
It is not a flexible hose and it doesn't appear that I can slide it back away from the TB. Do I need to remove the TB first and pull the TB from the hose versus trying to pull the hose from the TB?
Note: the hose above has been removed although is is shown still attached in this pic.

 

Woohoo! Finally have the throttle body off. I never could get that rear hose (a) off with the throttle body in place. I removed the throttle body and pulled the TB away from the hose until it disconnected.







Next Question. What can I safely do about cleaning the intake (without removing) now that the throttle body is off?

 

get some shop rags, not paper towels, and brake cleaner or carb cleaner spray and go to town

 

I wouldnt clean the intake if its plastic. If you have aluminum rags and solvent like brakeclean or what ever. I saw in the pictures it is plastic. Dont clean it. Atleast not with any solvent..