emissions part identification

[Claytonk]

I searched through the emissions manual but cannot find this part? can anyone help identify it and tell me where the hose that's supposed to be on it goes?

 

[fjc-man]

I think the reason it’s not covered in your emissions manual is because it is a idle up unit for A/C.

 

[Claytonk]

I think the reason it’s not covered in your emissions manual is because it is a idle up unit for A/C.

Hmm? I'll have to check by the compressor to see if I notice any vacuum lines that are missing

 

[klinetime574]

It connects to the intake manifold. The factory piece/fitting it attaches to is also a vacuum source for the brake booster. I can see it in your first picture. Follow the larger rubber hose next to the brake fluid reservoir (up and over) to the intake manifold and you will see it.

 

[Claytonk]

It connects to the intake manifold. The factory piece/fitting it attaches to is also a vacuum source for the brake booster. I can see it in your first picture. Follow the larger rubber hose next to the brake fluid reservoir (up and over) to the intake manifold and you will see it.

It connects to the intake manifold. The factory piece/fitting it attaches to is also a vacuum source for the brake booster. I can see it in your first picture. Follow the larger rubber hose next to the brake fluid reservoir (up and over) to the intake manifold and you will see it.

I'll check it out tomorrow

 

[Claytonk]

It connects to the intake manifold. The factory piece/fitting it attaches to is also a vacuum source for the brake booster. I can see it in your first picture. Follow the larger rubber hose next to the brake fluid reservoir (up and over) to the intake manifold and you will see it.

So I think your saying right around here somewhere but I just don't see it?

 

[Claytonk]

Thread '87 FJ60 - A/C vacuum actuator'

Jul 8, 2011

When I turn on the A/C: The vacuum pot (circled red) does it's job in pulling a vacuum and increasing engine idle.

When I turn off the A/C: The vacuum pot does not release the vacuum and thus the engine idle remains high even though the A/C compressor is off. To work around this, I hardly use the A/C. When I do, I have to pop the hood and manually remove the vacuum hose (grey hose above) from the vacuum pot...the vacuum is released, the engine returns to idle, I re-install the hose and all is well.

Question 1: I vaguely remember something about scavenging a compatable...

• HopLite
• Replies: 8
• Forum: 60-Series Wagons

Okay so I found this post after you guys pointed me in the right direction of what this thing might actually do. indeed it's the AC idle up vacuum actuator

 

[Spike Strip]

As you discovered, that Idle Up dashpot is for Factory A/C. Not in Emissions FSM. Do you have A/C ? Two things make me think you did not have A/C from the factory: 1- the 'Finned Cooler' in your picture does not have the Vacuum port for the Idle Up Solenoid. That's what was installed at the factory if truck did not have A/C.

2- It looks like you have a York Compressor ?

The function of the Idle Up is to slightly raise the Idle RPMs when A/C is on so truck doesn't lug when moving from a stop with A/C engaged.