Mat sensor ?
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From: First one out of liberty city, burn it to the ground
Mat sensor ?
glenn said the MAT was the sensor at the air filter but as ive known it was the IAT unless IAT=MAT?
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89 Firebird (AKA "Money")
2.8 V6 w/ t5 tranny (383 tpi t56 12/01)
Flowmaster 80 series, 3" Intermediate, SS Tips, Random Tech Cat, Msd Coil, MSD 6a, Accel 8.8 wires, Cold Air Intake w/ K&N, Lakewood LCA's, Brushed aluminum Hood pins ETC...
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89 Firebird (AKA "Money")
2.8 V6 w/ t5 tranny (383 tpi t56 12/01)
Flowmaster 80 series, 3" Intermediate, SS Tips, Random Tech Cat, Msd Coil, MSD 6a, Accel 8.8 wires, Cold Air Intake w/ K&N, Lakewood LCA's, Brushed aluminum Hood pins ETC...
Next:
Spohn Torque Arm, Lakewood Panhard bar, BMR Fabrication Sub Frame connectors...
-------------------------
My Site:
www.geocities.com/firebird89white
" I'd rather run last in a full out race, than to NOT run at all ".
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From: Los Angeles, CA
Engine: LH0 3.1L
yeah i guess the MAT sensor is sometimes referred to as an INTAKE air temp sensor because of where it's located....but the actual name is the Manifold Air Temp sensor. same one though....
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From: First one out of liberty city, burn it to the ground
ok...hmm how would it read low pressure? Anyone know? I dont actually have it in the intake tubs so im thinking i need to drill a hole and put it in there before i buy a new sensor...thats prolly the problem since pressure to build up needs a closed space and the spot i have the IAT is not in a closed space. Ideas?
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89 Firebird (AKA "Money")
2.8 V6 w/ t5 tranny (383 tpi t56 12/01)
Flowmaster 80 series, 3" Intermediate, SS Tips, Random Tech Cat, Msd Coil, MSD 6a, Accel 8.8 wires, Cold Air Intake w/ K&N, Lakewood LCA's, Brushed aluminum Hood pins ETC...
Next:
Spohn Torque Arm, Lakewood Panhard bar, BMR Fabrication Sub Frame connectors...
-------------------------
My Site:
www.geocities.com/firebird89white
" I'd rather run last in a full out race, than to NOT run at all ".
------------------
89 Firebird (AKA "Money")
2.8 V6 w/ t5 tranny (383 tpi t56 12/01)
Flowmaster 80 series, 3" Intermediate, SS Tips, Random Tech Cat, Msd Coil, MSD 6a, Accel 8.8 wires, Cold Air Intake w/ K&N, Lakewood LCA's, Brushed aluminum Hood pins ETC...
Next:
Spohn Torque Arm, Lakewood Panhard bar, BMR Fabrication Sub Frame connectors...
-------------------------
My Site:
www.geocities.com/firebird89white
" I'd rather run last in a full out race, than to NOT run at all ".
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From: The Bone Yard
Car: Death Mobile
Engine: 666 c.i.
MAT is the same as IAT. In my GM shop manual for 1991, the proper term is MAT and the term I prefer to use. IAT is possibly an earlier term; but it is not "GM-ese" in 1991 for EFI vehicles.
MAT measures temperature of the incoming air. MAP is used on Speed Density systems (or better, non-MAF cars) to measure the Absolute Pressure in your intake.
EG. 0 vacuum = 29.5" Hg or 100 Kpa absolute pressure as measured by the MAP and 29.5" Hg vacuum = 0" Hg or 0 Kpa absolute pressure as measured by the MAP. For eprom programming (burning), all the tables use Kpa (metric) for dealing with the MAP sensor. In fact, most of the calculations done by GM within the eprom algorithms use metric.
[This message has been edited by Glenn91L98GTA (edited January 21, 2001).]
MAT measures temperature of the incoming air. MAP is used on Speed Density systems (or better, non-MAF cars) to measure the Absolute Pressure in your intake.
EG. 0 vacuum = 29.5" Hg or 100 Kpa absolute pressure as measured by the MAP and 29.5" Hg vacuum = 0" Hg or 0 Kpa absolute pressure as measured by the MAP. For eprom programming (burning), all the tables use Kpa (metric) for dealing with the MAP sensor. In fact, most of the calculations done by GM within the eprom algorithms use metric.
[This message has been edited by Glenn91L98GTA (edited January 21, 2001).]
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From: Central NJ, USA
Car: 1986 Firebird
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Ha! Glenn, I always use MAT also. I think you're the first person i've seen on thirdgen.org that purposely follows that "proper terminology" idea. I had an arguement on here a lonnnng time ago that "it's MAT not IAT!" I do know that in the 4th gen 93-up f-bodies, GM calls the sensor the IAT.
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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!
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From: The Bone Yard
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TomP, the funniest thing is, the ONLY place I see the "MAT" referred to as an "IAT" is at www.thirdgen.org . Everywhere else, I see it referred to as "MAT". Its the term used within the various eprom "hacks" that I've read, within GM's own shop manual, within Diacom's software and display, and even TPIS calls it the MAT as publish it as such within their catalogue. As I said, I only see the term IAT here.
I cannot be bothered with symantics. When I see someone say "IAT", I just assume they mean "MAT" and don't bother correcting them on the proper name. In fact, I will often type "MAT/IAT" just to clarify. If someone INSISTED that the proper term is "IAT", I would just ask them to find the term in a GM shop manual for our cars. But it isn't worth loosing any sleep over IMO.
I don't play with 4th gen cars, so I don't have a 4th Gen Shop manual to confirm the proper term from GM.
I probably should clarify the differences between memcal/calpak and eprom though. There is a technical difference as the eprom refers to the "chip" itself that holds the calibration, where as the memcal/calpak is the complete eprom and ESC circuitry in GM's special holder/carrier. The eprom itself is a 28 pin chip that is soldered on to the GM memcal/calpak. Within my GM shop manual I see both memcal and calpak used interchangeably, but mem-cal is the more common term used.
I cannot be bothered with symantics. When I see someone say "IAT", I just assume they mean "MAT" and don't bother correcting them on the proper name. In fact, I will often type "MAT/IAT" just to clarify. If someone INSISTED that the proper term is "IAT", I would just ask them to find the term in a GM shop manual for our cars. But it isn't worth loosing any sleep over IMO.
I don't play with 4th gen cars, so I don't have a 4th Gen Shop manual to confirm the proper term from GM.
I probably should clarify the differences between memcal/calpak and eprom though. There is a technical difference as the eprom refers to the "chip" itself that holds the calibration, where as the memcal/calpak is the complete eprom and ESC circuitry in GM's special holder/carrier. The eprom itself is a 28 pin chip that is soldered on to the GM memcal/calpak. Within my GM shop manual I see both memcal and calpak used interchangeably, but mem-cal is the more common term used.
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