I am brand new to the forums, and I will be putting up an introduction once I get this thread done. I just had a few questions about my 04 F150 as I am new to the F150.. pictures below.

1st. picture. Where does this tube go? When I did my very 1st seafoam treatment, this is the tube I used to suck up less than half the can. It did not work as described, so I used a different tube that I tracked directly to the intake..



2nd picture. If the tube from the 1st picture, goes into the crankcase, and that's where my seafoam went, would it cause my oil cap to look like this? (Just did an oil change today)



3rd image. I'm assuming this is the old 4x4 solenoid that I should replace right?



4th and 5th images. Are these two coolers stock? And if so, what liquid does each one cool?





6th image. This small black tube is cut off. Should it be attached to something, and what does it do?



7th image. Behind my steering shaft, you can see a white plug on the right. That white plug is holding a 1/2" tube that is folded over itself not attached to anything. Does anybody know anything about this?




Thank you guys in advance for any advice you can give. I've been doing a lot of lurking around here, and it seems to be a super knowledgeable group

 

The build up on the oil cap is normal... it is from running your engine and not fully getting up to temp, this causes that film to get on the oil cap and moisture to become present on the under side of the oil cap.

And yes, replace that solenoid for the 4x4, the part is like $21 or something and takes 30secs to do.

 

Pic 1- That goes into the intake manifold. Its the main vacuum line for the brake booster. Its where most people put SeaFoam.

Pic 2- Normal.

Pic 3- No idea... someone will though.

Pic 4- The one in front of the radiator, yes. The lower one, unless its a factory accessory- no. To me it looks like a rock/debris magnet and unless you NEED two coolers, I'd ditch it.

Pic 5, 6, 7- Not sure.

 

Thank you guys for the super fast replys! Now I can calm down a little bit, I was worried I had a gasket going or that I really messed something up by putting the seafoam in that large vac line. I don't think I've ever seen an oil cap do that before.

When I did my seafoam through that large vac line, I got no smoke, just a whole lot of liquid coming out my exhaust. I ended up using a different line that I tracked right to the plastic part of the intake manifold, and it seemed to work like I thought it should have.

 

the little one is a tranny cooler, does your truck have towing package?

 

^ Yes sir. Then the large one must be an oil cooler eh?

 

the little cooler is the power steering cooler, the larger one is the trans cooler. the last pic im pretty sure is the front diff breather tube.

 

i didnt even realize there was two pictures , i looked at it like five times wondering why everyone was thinking the radiator was the tranny cooler. what i was trying to say was the medium sized one is the tranny cooler lol

 

Pic 3, that is the old style 4x4 switch that cause everyone problems

 

Was the PS cooler a factory option on the FX4, or did the previous owner probably just put that on there? It does seem to be in quite a stupid spot if I would ever do some hardcore off-roading...