Odd blower - what is it?

[LazyEye]

Hey Guys,
I'm new here. running a 92 fj80, 231,000 miles, 3F-E of course. Just bought it 4 days ago. paid 3000, figure I got a pretty good deal, birfs don't make any noise and the steering knuckles seem pretty clean except for a thin layer of grease.

anyway, my point is in poking around under the hood, i came across a funny little fan blower on the drivers side up near the front grill. its outlet is a big plastic tube that dumps out into the engine compartment just shy of the intake manifold. and that's it. i can't figure out what it is.

does anyone have any ideas? i can't post pictures yet because noob status still. i'' apologize right now as i'm sure i wasn't supposed to start a whole new thread for this but i couldn't figure out which preexisting thread to post under, sorry for my ignorance

the first image shows the blower housing, second image is where the exhaust tube mounts to the top of the blower housing, third image shows the output of the blower tube

 

[mct75]

Welcome to MUD!

It cools the fuel injection rail after shutoff to prevent a possible vapor lock scenario. I removed mine.

 

[Dave 2000]

Welcome!

Regards

Dave

 

[inkpot]

The knuckles should have a fine coating of moly grease. If not then they need some added.

 

[LazyEye]

Welcome to MUD!

It cools the fuel injection rail after shutoff to prevent a possible vapor lock scenario. I removed mine.

Okay, sweet always nice to have more room under the hood. I take it you've never vapor locked since removing your fan?

 

[LazyEye]

Thanks all for the warm welcomes

 

[mct75]

Okay, sweet always nice to have more room under the hood. I take it you've never vapor locked since removing your fan?

Nope, no issues at all.

 

[LazyEye]

Hey mct75,

it looks like you've deleted your egr system too. what directions did you end up following for that delete? i've seen so many threads on it that i don't know what is the best more reliable method anymore. any help you could offer would be much appreciated

 

[LS1FJ40]

Hey mct75,

it looks like you've deleted your egr system too. what directions did you end up following for that delete? i've seen so many threads on it that i don't know what is the best more reliable method anymore. any help you could offer would be much appreciated

I have a layman's write up that I started that takes Spook's EGR delete write up and put's it in to layman's terms. One of these days I'll start a thread on it. In the meantime I can email it to you. It's really pretty simple. I'll message you.

 

[LazyEye]

nice cruiser in your profile pic! is the bottom color bed liner? thanks for the notes on egr deletion

 

[mct75]

Hey mct75,

it looks like you've deleted your egr system too. what directions did you end up following for that delete? i've seen so many threads on it that i don't know what is the best more reliable method anymore. any help you could offer would be much appreciated

There are several guides floating around, all are good. Basically, you have two holes to block off, and ~3ish vacuum lines.

I used a freeze plug in the intake manifold, and a brass pipe plug in the exhaust manifold. The vacuum lines are all capped off. Study, learn, and love the vacuum diagram for the 3F-E if you wish to be successful.

The ONLY system that is required for the engine to function correctly is the vacuum reference to the fuel pressure regulator. Everything else is there for emissions or edge cases in regards to drivability.

 

[LazyEye]

There are several guides floating around, all are good. Basically, you have two holes to block off, and ~3ish vacuum lines.

I used a freeze plug in the intake manifold, and a brass pipe plug in the exhaust manifold. The vacuum lines are all capped off. Study, learn, and love the vacuum diagram for the 3F-E if you wish to be successful.

The ONLY system that is required for the engine to function correctly is the vacuum reference to the fuel pressure regulator. Everything else is there for emissions or edge cases in regards to drivability.

Did you remove the smog pump as well?

 

[mct75]

Did you remove the smog pump as well?

Absolutely. I still have the manifold in the head for it but I want to remove it soon.

 

[LS1FJ40]

Smog Pump, VSV, EGR, all gonzo!

I, personally, don't like the brass pipe plug in the manifold. I used the Dorman plug.

 

[pengfinn]

I never had the pipe that goes from the blower to the manifold. Removed the blower when I did a desmog (cleared that whole fender up, sans fusebox and wiper tank.) Actually found the OEM radiator cap in the blower, wedged down in there odd enough that it took a beating to knock loose, but wasn't impeding the fan any.

 

[pengfinn]

Absolutely. I still have the manifold in the head for it but I want to remove it soon.

I notice you don't have that capped, does this cause any negative effects? I haven't removed that yet either.

 

[BILT4ME]

Smog Pump, VSV, EGR, all gonzo!

I, personally, don't like the brass pipe plug in the manifold. I used the Dorman plug.

Did you have to buy keychains from WitsEnd (@NLXTACY )?

 

[LS1FJ40]

Did you have to buy keychains from WitsEnd (@NLXTACY )?

I did mine before he started selling keychains. Maybe I'll upgrade to his at some point in order to get the extra HP and fuel efficiency.

 

[mct75]

Smog Pump, VSV, EGR, all gonzo!

I, personally, don't like the brass pipe plug in the manifold. I used the Dorman plug.

Intake or exhaust? I will admit that the threads on the exhaust manifold were SHOT by the time I got that EGR pipe out of there. So far it is holding though.

I notice you don't have that capped, does this cause any negative effects? I haven't removed that yet either.

There is a check valve on the "air injection manifold" that keeps exhaust from leaking out. If that fails, you'll have an exhaust leak and maybe incorrect O2 sensor readings. My concern is that everyone says to plug the 4 holes in the manifold with NPT plugs, but I have doubts that the Japanese would use an American pipe thread. Also, with my luck I would tighten them too much and crack the head.

 

[LS1FJ40]

Intake or exhaust? I will admit that the threads on the exhaust manifold were SHOT by the time I got that EGR pipe out of there. So far it is holding though.

There is a check valve on the "air injection manifold" that keeps exhaust from leaking out. If that fails, you'll have an exhaust leak and maybe incorrect O2 sensor readings. My concern is that everyone says to plug the 4 holes in the manifold with NPT plugs, but I have doubts that the Japanese would use an American pipe thread. Also, with my luck I would tighten them too much and crack the head.

Exhaust. I soaked it and used heat to get it off. My threads were great. Don't get me wrong, it was a PITA!