Vacuum and Emissions Diagrams

[88hurstolds]

1984-87 VIN 9















1984-88 VIN Y Vacuum

1986 ECM



1987 ECM

[88hurstolds]

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[86olds442]

I have most of the emision equip that im keeping figured out but im lost, I cant figure out what goes to the tube in the back of the E4MC at the top center

[88hurstolds]

I have most of the emision equip that im keeping figured out but im lost, I cant figure out what goes to the tube in the back of the E4MC at the top center

It goes to the choke stove pipe on the manifold next to the choke. There's a pipe that connects to the stove and that carb port which is connected by a 1" piece of vacuum rubber tube.

[74hurstolds]

What does THERMAC represent?

[74hurstolds]

What does THERMAC represent?

Okay figured it out, thermostatic air cleaner.

[hatch2002]

w00t

THANK YOU! man I needed this info and have been looking for days. traded an 05 altima for an 86 442 thats been parked 14 years in an open carport-it has 39k original miles ( last service was in 02 and I have other records from the first service untill parked so I _thought_ i got lucky on this ride but rodents have eaten everything under the hood.... luckily they didnt get inside. I am building this car for my 14 year old kid, maybe ill have it done in 2 years.

[88hurstolds]

Post some photos of it in the 442 section.