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1991 TPI Vacuum hoses

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Old May 15, 2017 | 02:23 PM
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Manny in NM's Avatar
Manny in NM
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1991 TPI Vacuum hoses
I bought a 91 Trans Am with the 305. The previous owner disconnected some of the vacuum hoses and I am not sure where they go. I have photos if anyone is interested in helping me figure it out.

Thank you
Attached Thumbnails 1991 TPI Vacuum hoses-img_3131.jpg   1991 TPI Vacuum hoses-img_3132.jpg   1991 TPI Vacuum hoses-trans-am-1.bmp  
Last edited by Manny in NM; May 15, 2017 at 02:40 PM. Reason: add pictures
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Old May 15, 2017 | 03:10 PM
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From: Moorpark, CA
Car: '91 GTA, '92 T/A Convertible
Engine: GTA: 350 w/Vortec heads, T/A: 305
Transmission: Pro-built 700R4
Axle/Gears: GTA: 3.27, T/A: 2.73
Re: 1991 TPI Vacuum hoses
The first pic is where the EGR solenoid connects. The two vacuum lines are the hard plastic kind. One should connect to the EGR valve and the other runs up underneath the plenum to a small port on the bottom of the throttle body on the driver's side.
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Old May 15, 2017 | 04:33 PM
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Manny in NM
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Re: 1991 TPI Vacuum hoses
Originally Posted by blacksunshine'91
The first pic is where the EGR solenoid connects. The two vacuum lines are the hard plastic kind. One should connect to the EGR valve and the other runs up underneath the plenum to a small port on the bottom of the throttle body on the driver's side.
Thank you. I have a 1991 convertible. I see you have a 1992. I have always loved those cars. Well I hope I can figure this out. if you have any pictures of where they go, I would appreciate it. I can send you my email address if you have time.

Thanks again!
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Old May 17, 2017 | 06:21 PM
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Car: 1967 Camaro, 91 z28
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Re: 1991 TPI Vacuum hoses
The diverter valve diagram is here
https://www.thirdgen.org/forums/tech...iagrams-i.html
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