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What hoses are these and where should they go?

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Old 07-09-2021, 09:01 PM
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Car: 1988 IROC-Z
Engine: 5.7 TPI
Transmission: Automatic
What hoses are these and where should they go?

These hoses have been cut since I bought this car and go into the firewall near the transmission dip stick. I do not feel vacuum from any of them but my vac system is messed up anyway.
Old 07-09-2021, 09:44 PM
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Car: 86 Iroc-Z
Engine: 383 HSR
Transmission: 700R4
Axle/Gears: 3.42
Re: What hoses are these and where should they go?

Doesn't look like the same as my factory hoses, but that is where my vacuum hose go into for the HVAC controls.
Old 07-10-2021, 12:06 AM
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Car: 89RS vert
Engine: Erod
Transmission: 4L65e
Axle/Gears: BW, 3.27
Re: What hoses are these and where should they go?

Hvac and Diverter valve...
Old 07-10-2021, 07:08 AM
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Re: What hoses are these and where should they go?

One goes to the intake manifold, and supplies vacuum from there to the AC control head; the other goes to the heater control valve.
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