Unknown Parts

[M1llionb]

Hello everyone,

I was working on my bronco and realized several things I could not identify. Can anyone tell me the role these parts play in my engine. Thank you.

 
What is this green cable? Where does it go?


Also this small black wire? How do I replace? The wire was cut in half and not connected to the other end near the split. (Not the heater hose) The wire splits in two and one side connects to this black sphere... Sorry for me being so naive.. But I've never worked on engines before...




Thank you!

 

[Seabronc]

Most of the lines you are asking about art vacuum lines.  The black sphere is a vacuum reserve tank and serves to provide vacuum to your A/C controls during low vacuum conditions like acceleration or going up a steep hill.  There should be a vacuum diagram on either the hood or radiator support that shows where each vacuum line goes.  Unfortunately I don't have a diagram for your truck.

The black line in picture 3 almost certainly connects to the vacuum check valve shown just above and to the right of it, necessary for your A/C controls to function.  The black line next to it should connect to the black sphere in picture 5.  The green line is for the EGR valve but I don't have a diagram of your truck so I'm not sure of the exact connection but definitely to a control valve, if you have a valve with a green stub on it, they should connect.  Picture 2 ???, it looks to be a piece of another control and you should be able to match it to what ever it rusted off.  Again, look at the vacuum diagram for exact connections, they are not the same for all trucks, that is why they put a vacuum diagram under the hood.

If you need to, take a picture of it and we can try to help with more accurately.

>-

 

[miesk5]

Yo M1llionb,

As Fred advised.

Green vacuum line from EGR Vacuum Regulator (EVR) to EGR Valve Position (EVP) sensor attached to top of the EGR valve. See these in my leak test below.

Stop by local dealership and ask for the vacuum diagram decal. FORD used to provide them for free on line until they became $$$ hungry.

Have your vin with you.

See my vacuum leak test for some component info in post #20 @ http://broncozone.com/topic/23994-90-58l-getting-continuous-code-33-and-running-code-44/?p=125535

Vacuum Line Routing Diagram for 86 5.0

http://www.supermotors.net/registry/media/72424

This could be same for your Bronco depending upon if it is a California emission or high altitude, etc.

MAP sensor Location pic in mid 80s; the "right side" (passenger) near the EEC Test Connectors



Source: by Steve

See Vacuum Line Acronyms in my leak test.

 

[M1llionb]

So I identified where the end of the green cable connects to... It connect to this long black hose that connects to the back of the engine. 

It's very tight to get back there so I was not able to take a picture. Can you guys tell me what exactly I'm looking at? 

I know its hard to explain since I'm new to this concept. So please bear with me. 




I also do not know what this black tip is. 



Also I found these wires on the passenger side of the truck.


Please help 

 

 

[miesk5]

Yo,

Were you able to obtain your 86 5.0 vacuum diagram from local Ford dealer?

Some emission hoses & devices are different for high altitude and/or California 86 5.0s vs other states.

Let us know if this is what you have:

The hose from the TAD (Diverter) Valve aka SOL V on vacuum diagram (mounted on the passenger side fender on 1985-86 EFI trucks.) to the ACV (Air Control Valve, AKA Thermactor Air Diverter Valve located at the rear of the Intake Manifold. You have to climb up onto the engine to feel the Air Diverter Valve or use 2 step ladders next to each front fender and wood planks between them.

http://web.archive.org/web/20111216233832im_/http://www.oldfuelinjection.com/images/selftest03.jpg

The other Vacuum Line goes from the TAB Solenoid (rear solenoid mounted on the passenger side fender) aka SOL V on diagram to air bypass valve (AIR BPV ON VACUUM DIAGRAM), to the passenger side (adjacent to the Vacuum Reservoir Can) and down to the bottom of the TAB (Bypass) Valve.

Here it is,



..

Is this the"tip"?,

Canister Purge Solenoid Valve (CPRV on vacuum diagram): used in EEC IV



pic by SeattleFSB

If Not, if it is the fuel system schrader valve on the top of the fuel rail, driver side, it looks like a tire air valve stem.

http://www.supermotors.org/getfile/286983/fullsize/what%20is%20this2c.JPG

pic by solidpvc

...

Vacuum Tank for AC (plastic ball type) & Carbon Canister (Charcoal, Vapor, Evaporative Emission (EVAP) Location & Vacuum Hose Routing Video in an 86 5.0

Source: by JKossarides ("The Bronco", Jean) at http://www.supermotors.net/registry/media/742200

 

[miesk5]

Yo,

One more try to finish my reply without the pop-ad friggin me up AGAIN!.

"Also I found these wires on the passenger side of the truck."

See this pic by Ryan M.

The self-test plugs were mounted on the passenger side fender on 1985-86 EFI trucks.

http://web.archive.org/web/20111216233832im_/http://www.oldfuelinjection.com/images/selftest03.jpg

 

[M1llionb]

My bronco vacuum diagram is the same as the one you listed on your previous comment. http://www.supermoto...try/media/72424

This sounds accurate :The hose from the TAD (Diverter) Valve aka SOL V on vacuum diagram (mounted on the passenger side fender on 1985-86 EFI trucks.) to the ACV (Air Control Valve, AKA Thermactor Air Diverter Valve located at the rear of the Intake Manifold. You have to climb up onto the engine to feel the Air Diverter Valve or use 2 step ladders next to each front fender and wood planks between them.: 

Because I was having a hard time fitting my hand behind the the intake manifold. And it was a thick black hose which looks like the green cable



 broke off since it was rusty. 
Now, I did identify these cable on my passenger side fender. Which seems to be all in place. :The other Vacuum Line goes from the TAB Solenoid (rear solenoid mounted on the passenger side fender) aka SOL V on diagram to air bypass valve (AIR BPV ON VACUUM DIAGRAM), to the passenger side (adjacent to the Vacuum Reservoir Can) and down to the bottom of the TAB (Bypass) Valve.: 

And yes, the black tip does look like an tire air valve. I had a mechanic help me fix my fuel system since my truck was not turning on. And he adjusted it. I dont know what that tip is for. Keep in mind I'm troubleshooting for a vacuum leak. Because sometimes, when I accelerate, my truck stays on 25 mph and my rpm goes up and down 10-20 rpm. And my truck does not want to accelerate. 

 

[miesk5]

Yo,

Yes, the electronic fuel injections fuel pressure test port is a schrader valve that looks like a tire air valve, bUT is slightly different.

Ford describes it as, "A pressure test point with a Schrader fitting is in the engine fuel rail to relieve pressure in the fuel system and to measure the injector supply pressure for service and diagnostic work."

Do not attempt to use a Schrader valve designed for air or refrigeration for test port applications on fuel injection systems as neither of these types of valve cores are rated for the engine temperatures found underhood or the corrosive actions of fuel compounds. The non-fuel rated types of valves will leak and will potentially cause a fire hazard under your hood!

Some folks use a tire pressure gauge that usually leaks.

Here it is in a System Schematic,

http://www.thedieselstop.com/faq/9497faq/maint/vra/images/a16077c.gif

Can you borrow or buy a vacuum gauge? Local mom and pop parts store may test the vacuum for you for free. Here in the pin lands there were 4 such stores within 21 miles, but now there are none.

Test vacuum at vacuum tree atop intake manifold, see it on middle right side of this pic by Shadowfax,

http://www.superford.org/getfile.php?id=114944&toggle=fullsize&f=101_0141.JPG

Two red vacuum lines are visible and on more behind those two. See my vacuum leak test for more info.