Intake Air Sensor
Intake Air Sensor
Cargo Master
Joined: Aug 2003
Posts: 3,237
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From: Belleville, Ontario
Welcome to FTE ltabora.
The IAT sensor on the 2.3 is on the air duct that attaches to the throttle body. The sensor is about 6" away from the throttle body on the side of the air duct.
The IAT sensor on the 2.3 is on the air duct that attaches to the throttle body. The sensor is about 6" away from the throttle body on the side of the air duct.
Last edited by Dealford; Dec 21, 2003 at 08:11 PM.
Elder User
Joined: Feb 2004
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From: Rosebud
I got one of those sensor mods and it made my 95 run like crap,so after some checking i found that since its only a resistor,Imeasured it and it was Too low of a resistor.acording to the book, you want a higher resistance value to make your computor think its colder out than it really is,thus it advances the timing through the CPU.Iwent to radio-shack and got one,69K ohms.it worked alot better.
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Joined: Feb 2004
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From: Rosebud
You just unplug the sensor and fold the resistor wires over about half way and plug it into the wire plug that you unpluged from the sensor,it does'nt matter which way you plug it in.The inprovement is only slightly noticable.Like going up hill,say your truck downshifted at halfway up the hill,with the resistor it may go another 50-75 yards before downshifting.
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Elder User
Joined: Feb 2004
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From: Rosebud
Slight power increase(10 HP)But you seem to get a smoother idle,Because the resistor tells the PCM that its alot colder out than it really is,so the PCM advances the timing a degree or two.
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From: Rosebud
By the way,check the resistor with a multi-meter.you want AT LEAST 69,000ohms,any less will not give a performance increase.The book says-the IAT is a thermal resistor that changes value at different temps.For example,at 68 degrees F the resistance is 27,000 ohms , at 160 degrees F it is 7,000 ohms.You might even experiment with higher resistance for better results. I went with 69,000 because I just wanted to compensate for running the A/C. P.S. resistors come in odd sizes,33,47, 56 etc. But they are only $2. at radio shack.
New User
Joined: Aug 2004
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IAT sensor
Instead of working to get the perfect resistance for your IAT (intake air temperature) sensor in different conditions you could try a variable one. I think these guys have something like a POT to adjust your IAT.
http://hurricane-horsepower.com
You could probably build one for less than they charge if you are handy with electronics.
http://hurricane-horsepower.com
You could probably build one for less than they charge if you are handy with electronics.
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