What are the 2 quick connect hoses from the AOS lead to?

[Brian in Tucson]

You should replace both hoses, they get brittle with age. And trying to splice them is the half as-sed way to go. Do it right or go home.

You will need to take the plenum cross overs off to get to the hose that goes to the left side. The crossovers are pretty easy to remove, you will need to remove the snorkel and some other stuff off to get the rear crossover out.

Get at least two cans of brake clean and clean out the crossovers, they will be oily. And a can of carb cleaner for the throttle body. Nothing seriously difficult if you don't break things as you take them apart. I have a vacuum diagram if you need one. (a really clear one.) I would budget a day for start to finish, tho it can be done in a lot less.

[Stiles13]

Brian, do you know which way to disconnect the end that goes to the front? I can't fit my hand through from behind the seat, and the air filter housing blocks the other direction. Any tips would be greatly appreciated.

[Quadcammer]

Originally Posted by Stiles13

Brian, do you know which way to disconnect the end that goes to the front? I can't fit my hand through from behind the seat, and the air filter housing blocks the other direction. Any tips would be greatly appreciated.

see if you can get to it from under the car. I recall being able to reach it from below.

Also helps if you have a friend who can push/pull on the hose while you pinch the fitting.

[Stiles13]

Originally Posted by Quadcammer

see if you can get to it from under the car. I recall being able to reach it from below.

Also helps if you have a friend who can push/pull on the hose while you pinch the fitting.

Thanks, I was wondering if that was the best way, or removing the fender liner.

[Brian in Tucson]

Originally Posted by Stiles13

Brian, do you know which way to disconnect the end that goes to the front? I can't fit my hand through from behind the seat, and the air filter housing blocks the other direction. Any tips would be greatly appreciated.

I did mine while the engine was sitting on a pallet. I would suspect that undoing the motormount and lowering the engine might give you enough access. If you're replacing the hose & you can get a flat screwdriver under the retainer, you can break it to get the hose loose.

I've lost count of how many times I've lowered the engine in the past 3 months. Can do it in my sleep. Helps to drain and disconnect coolant hoses from the front of the engine. You can get to the motormount bolts with a 15mm deep wall, and extension and a ratchet. And if you decide that while you're in there to replace the motormount itself, you can get the back half off the engine with 15mm box end ratcheting wrench

That corner of the engine is a b-itch tho.

[Stiles13]

Originally Posted by Brian in Tucson

You should replace both hoses, they get brittle with age. And trying to splice them is the half as-sed way to go. Do it right or go home.

You will need to take the plenum cross overs off to get to the hose that goes to the left side. The crossovers are pretty easy to remove, you will need to remove the snorkel and some other stuff off to get the rear crossover out.

Get at least two cans of brake clean and clean out the crossovers, they will be oily. And a can of carb cleaner for the throttle body. Nothing seriously difficult if you don't break things as you take them apart. I have a vacuum diagram if you need one. (a really clear one.) I would budget a day for start to finish, tho it can be done in a lot less.

Can you please share the vacuum diagram?

[Brian in Tucson]

Originally Posted by Stiles13

Can you please share the vacuum diagram?

you bet! Click the thumbnail:





A. I don't recall what it's called.
B. Vacuum tap on the left side of the front plenum.
C. Fuel pressure regulator.
D, E, F. Vacuum reservoir, junction, and diaphramed fitting in front of the AOS
G. Three way junction on manual trans cars, 4 way junction on Tip. with the additional hose going back to an electric vacuum switch for the trans coolant control
H. Vacuum check valve. Must be attached in that particular orientation.
I. Three way junction.
J. Electric vacuum control switch.
K. Resonance Valve on left bottom of the front crossover.
L. Vacuum source on the front, left crossover boot.

I don't recall where I got this diagram. I did not do the original work, tho.

[Stiles13]

Originally Posted by Brian in Tucson

you bet! Click the thumbnail:





A. I don't recall what it's called.
B. Vacuum tap on the left side of the front plenum.
C. Fuel pressure regulator.
D, E, F. Vacuum reservoir, junction, and diaphramed fitting in front of the AOS
G. Three way junction on manual trans cars, 4 way junction on Tip. with the additional hose going back to an electric vacuum switch for the trans coolant control
H. Vacuum check valve. Must be attached in that particular orientation.
I. Three way junction.
J. Electric vacuum control switch.
K. Resonance Valve on left bottom of the front crossover.
L. Vacuum source on the front, left crossover boot.

I don't recall where I got this diagram. I did not do the original work, tho.

Thanks! useful info!