Welcome to Mustang Evolution.
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04-02-2005, 04:54 PM
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#1
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Where is the IAT (air intake temp.) sending unit?
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Registered User
Join Date: Mar 2005
City: Aberdeen
State: Washington
Posts: 7
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Hello,
I was just trying to figure out where my IAT sending unit or IAT sensor plug is located on my 1989 Mustang LX 5.0L. I just got a performance upgrade mod, and the instructions say I need to locate the IAT sending unit or IAT sensor plug. But I don't know where to look for them at.  
Please Help Me! 
Thanks,
Nyssa |
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04-02-2005, 05:26 PM
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#2
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Mustang Evo NEWB
Join Date: Aug 2004
City: millville
State: New Jersey
Posts: 4,938
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I just went out to look over my '89.. couldn't find it anywhere's... you sure we have one?
__________________
1992 Mustang LX hatchback.. 1 of 542 black on black
2003 Regal GS - the beater/daily driver - somewhat stock. No its not a mustang, at least it's blown.
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04-02-2005, 05:29 PM
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#3
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Registered User
Join Date: Mar 2005
City: Aberdeen
State: Washington
Posts: 7
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I'm not sure. The information I got says we do. It says it may be located in the air intake tube or in the intake manifold or right around your throtthle body. I tried to look but I couldn't find anything. I don't even know what it looks like |
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04-02-2005, 05:37 PM
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#4
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Mustang Evo NEWB
Join Date: Aug 2004
City: millville
State: New Jersey
Posts: 4,938
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I'm still not seeing it.. I see a TP sensor a MAF sensor and an IAC in my wiring harness I'm not seeing anything else
__________________
1992 Mustang LX hatchback.. 1 of 542 black on black
2003 Regal GS - the beater/daily driver - somewhat stock. No its not a mustang, at least it's blown.
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04-02-2005, 05:37 PM
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#5
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Mustang Evo NEWB
Join Date: Aug 2004
City: millville
State: New Jersey
Posts: 4,938
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and I work on fords for a living d'oh
__________________
1992 Mustang LX hatchback.. 1 of 542 black on black
2003 Regal GS - the beater/daily driver - somewhat stock. No its not a mustang, at least it's blown.
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04-02-2005, 05:40 PM
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#6
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Mustang Evo NEWB
Join Date: Aug 2004
City: millville
State: New Jersey
Posts: 4,938
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okay I just completely checked the intake arm/throttle body.. I did not find an IAT anywhere's on my '89, nothing ahead of the throttle body anyway.. if there's anything else its under the intake manifold but that makes no sense since our TBs are heated
__________________
1992 Mustang LX hatchback.. 1 of 542 black on black
2003 Regal GS - the beater/daily driver - somewhat stock. No its not a mustang, at least it's blown.
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04-02-2005, 08:08 PM
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#7
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sʞɔns ʇuǝɹq
Join Date: May 2003
City: Macon
State: Georgia
Posts: 10,763
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are you sure its not the ACT (air charge temp sensor) or IAB (idle air bypass) and you just got them mixed together? the ACT is located on the driver's side of the lower intake behind the distributor. the IAB is on the throttle body.
__________________
-Jimmy I drive a station wagon.
GO BRAVES
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04-02-2005, 08:10 PM
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#8
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Eyes So Tight I Pass For An Asian
Join Date: May 2003
City: Huntsville
State: Alabama
Posts: 27,322
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Well what part did you buy that could help us out. |
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04-02-2005, 10:35 PM
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#9
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Banned
Join Date: Jun 2003
City: Severn, MD
State: Maryland
Posts: 3,920
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it was that little mod that puts a resistor on your IAT sensor to make it think its colder than it is |
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04-02-2005, 10:37 PM
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#10
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Mustang Evo NEWB
Join Date: Aug 2004
City: millville
State: New Jersey
Posts: 4,938
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ahh.. that's a pretty useless mod anyway  sell it to some unsuspecting classmate or something
__________________
1992 Mustang LX hatchback.. 1 of 542 black on black
2003 Regal GS - the beater/daily driver - somewhat stock. No its not a mustang, at least it's blown.
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04-02-2005, 10:57 PM
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#11
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Stang Freak!
Join Date: Mar 2005
City: Conover
State: North Carolina
Posts: 201
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I am guessing that you have a 5.0 CFI engine, Sooo I looked it up in my Hayne's manual to see if I could help.
You do not have a IAC on your engine, the IAC is for carburated engines (That's what the book says anyway.). According to this manual you have an ACT: Air Charge Temperature sensor. It shows the location of the ACT sensor on the intake manifold, it has an electrical connector on it. I scanned an pic from the manual that will hopefully help you find it. |
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04-02-2005, 11:11 PM
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#12
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Banned
Join Date: Jun 2003
City: Severn, MD
State: Maryland
Posts: 3,920
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CFI stopped in the stangs in 85, and that was only the auto HO cars |
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04-03-2005, 12:00 AM
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#13
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Stang Freak!
Join Date: Mar 2005
City: Conover
State: North Carolina
Posts: 201
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That's odd, my Haynes book is for 79-93 and the only 5.0 it listed in the ECS section for EEC-IV was the 5.0 CFI.
There is a 5.9L SEFI on the page after that...could that be a typo?
I'm not familiar with the spec. on alot of the older Stangs... |
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04-03-2005, 08:32 AM
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#14
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sʞɔns ʇuǝɹq
Join Date: May 2003
City: Macon
State: Georgia
Posts: 10,763
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86-93 mustangs are 5.0 SEFI
__________________
-Jimmy I drive a station wagon.
GO BRAVES
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04-03-2005, 11:37 AM
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#15
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Stang Freak!
Join Date: Mar 2005
City: Conover
State: North Carolina
Posts: 201
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Ahhh, ok.....thanks!
The page says 5.9, but the pic has 5.0 on the intake...LOL 
Oh well maybe this pic will help you find what your looking for. |
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04-03-2005, 11:54 AM
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#16
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Registered User
Join Date: Mar 2005
City: Aberdeen
State: Washington
Posts: 7
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Okay. Thank You |
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04-03-2005, 12:00 PM
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#17
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Registered User
Join Date: Mar 2005
City: Aberdeen
State: Washington
Posts: 7
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Well... I'm not really sure. The directions say, "You may have to do some searching to find your IAT (Intake Air Temperature) sending unit is located. It is usually located in the Air Intake Tube (where the air flows into your engine) or it may be located in the intake manifold, or right around the throttle body. It should be a connector/plug with two small wires going to it, and a clip on the side of the plug." But I couldn't find it. Maybe the directions are wrong, I don't know |
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04-03-2005, 12:06 PM
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#18
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Registered User
Join Date: Mar 2005
City: Aberdeen
State: Washington
Posts: 7
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It is a performance module: it is a +20HP speed chip. It says, "By using our Performance Module your Ford Mustang's ECU will receive slightly adjusted ratios which make your car think its taking in more cold air, which inturn will cause the Air/Fuel ratios to be slightly adjusted to offer more performance." |
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04-03-2005, 12:10 PM
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#19
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Registered User
Join Date: Mar 2005
City: Aberdeen
State: Washington
Posts: 7
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Well, I still can't find it, but I'm gonna go back out and try to look again. I just wanted to say thanks to everyone thats been trying to help me. I appreciate it. |
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04-03-2005, 12:29 PM
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#20
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Registered User
Join Date: Apr 2004
State: California
Posts: 9,197
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it wont add any power just sell it. |
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04-03-2005, 01:26 PM
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#21
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WTF^^...
Join Date: May 2003
City: Hoover / Florence
State: Alabama
Posts: 27,258
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dont the fox bodies do it diff... like a sensor in the uppe or something odd like that
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