mat sensor question
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Junior Member
Joined: Jul 2003
Posts: 33
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From: Philadelphia PA
Car: 1986 Pontiac Trans Am
Engine: 305 TPI
Transmission: TH-700R4
mat sensor question
my car is throwing a code 23 (MAT Sensor). i was wondering where it is located and what color the wires are they goto the connector for it. the previous owner of my car has a sensor that looks like a coolant temp sensor hooked up and just laying near the distributor.
86 trans am, 305 tpi
86 trans am, 305 tpi
Supreme Member
Joined: Aug 2001
Posts: 1,896
Likes: 1
From: Warrington, PA USA
Car: "02 z-28
Engine: LS-1
Transmission: 4L60E
Thats the MAT. On TPI engines it goes into the underside of the intake plenum near the rear of the plenum on the driver side. The CTS and MAT sensors on the TG's are the same part#, they are interchangable. If it's out of the plenum you should hear a vacuum leak unless he plugged it. Can't understand that one. You may have to yank the plenum to change it, it's very tight to get to.
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Last edited by Vader; Mar 31, 2018 at 10:02 PM. Reason: Updated links
Supreme Member
Joined: Aug 2001
Posts: 1,896
Likes: 1
From: Warrington, PA USA
Car: "02 z-28
Engine: LS-1
Transmission: 4L60E
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