Plenum
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Joined: Feb 2001
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From: Lenhartsville, PA
Plenum
I recently purchased a used TPI and there is a sensor or something missing. It's all the way in the back corner of the plenum and comes in at an angle. I can't find it in any of my books.
Junior Member
Joined: Nov 1999
Posts: 28
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From: Los Angeles, CA
I believe thats the intake air temp(IAT) a.k.a. MAT or manifold absolute temperature sensor. Would you could do is relocate the sensor to in front of the Throttle body to gain a more accurate measurement. Glenn would know more about this if in indeed this is the sensor you're talking about.
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Joined: Jan 2001
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From: Beyond Hope
That port is for the power brake vacuum line.
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1993 C1500 Indy 500 Edition
1992 TA TPI setup
Stock motor, new one being built now.
www.geocities.com/wsleigh
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1993 C1500 Indy 500 Edition
1992 TA TPI setup
Stock motor, new one being built now.
www.geocities.com/wsleigh
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Yah, the one in the back left corner that comes in at an angle is for the power brake booster. The MAT is underneath in the back.
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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
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------------------
West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-
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