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Plenum

Old Feb 12, 2001 | 05:09 PM
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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.
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Old Feb 12, 2001 | 05:16 PM
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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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Old Feb 12, 2001 | 06:17 PM
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That port is for the power brake vacuum line.

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Old Feb 12, 2001 | 06:26 PM
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Yep it's a vacuum line

ODB
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Old Feb 12, 2001 | 06:45 PM
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Thanks, the MAT sensor is the sensor directly underneath the plenum, right?
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Old Feb 12, 2001 | 07:49 PM
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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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