94 Camry XLE IAT ( Intake Temp Sensor ) - Toyota Nation Forum : Toyota Car and Truck Forums


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3rd & 4th Generation (19921996 & 19972001) Toyota Camry Discussion for years: 1992-1996 & 1997-2001 Topics of discussion range from fuel economy, safety, modifications, performance all involving America's favorite family car, the Toyota Camry.

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Old 02-22-2005, 03:32 PM   #1 (permalink)
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Unhappy 94 Camry XLE IAT ( Intake Temp Sensor )

I went to the Toyota dealer the other day and asked them where the IAT ( Intake Temperature Sensor ) is located on my 94 Camry XLE. One of the Toyota Tech told me that some models the IAT unit is attached to the side of the Air Box and in some camrys the IAT is built in inside the MAF ( Mass Air Flow ) unit. Anyone out there has a camry that has the IAT unit built in the MAF unit? I would like a second opinion thank. Also, they told me, that the MAF unit cost $750. Please help!
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Old 02-22-2005, 06:13 PM   #2 (permalink)
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The 5SFE (I4) is stuck into the side of the airfilter box, it doesn't have a MAF sensor.

I remember that XLE (V6) uses a MAF, but did not know the IAC was internal to it. If so, and the IAC is bad, why not replace it with a fixed resistor of a value of about 65F - 70F for the time being. See how it works while you look for another MAF sensor at a junker.
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Old 02-22-2005, 08:53 PM   #3 (permalink)
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You mean use a resistor in place of the MAF unit? I would not know how to do it. I don't want to damage my engine. Thank you for the advice.
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Old 02-22-2005, 11:33 PM   #4 (permalink)
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No, just a resistor for the air intake temp sensor, leave the maf unit as is, until you find another,
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Old 02-23-2005, 06:06 PM   #5 (permalink)
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Well, like I said the IAT is built in inside the MAF unit. There is only one plug that connects to the MAF unit. I believe the IAT is inside of it according to the Toyota Tech. It's impossible to get to the IAT because the MAF and the IAT are both housed in the same unit with one plug going into it. Oh well....thanks anyways.
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Old 02-23-2005, 06:56 PM   #6 (permalink)
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you actually have a MAF on a 4 cyl??? all you need is the IAT, unless in fact you do have a v6 in which case for that price of 750 you could almost buy a new engine
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Old 02-23-2005, 07:28 PM   #7 (permalink)
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Quote:
Originally Posted by Erbe
you actually have a MAF on a 4 cyl??? all you need is the IAT, unless in fact you do have a v6 in which case for that price of 750 you could almost buy a new engine
yeah, wow, I'm surprised no one else caught that.

he has a MAP sensor, and air intake temperature sensor.
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Old 02-24-2005, 01:07 AM   #8 (permalink)
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what motor????????????

also, what is the point of this whole thing?? is your car not running correctly? why would you even ask about an air temp sensor in the first place?

the way you can test this is to test the voltage at the wire coming from the sensor to the ECU... this pin on the ecu is the THA pin. it should generate 0.5 - 3.4 Volts with the ignition switch on and intake temps around 68 degrees F / 20 C. on 1mz it is the blue/black stripe wire coming from the MAF. on 5sfe it is the blue/black striped wire coming from the Intake air temp sensor. the actual sensor on the 5sfe looks like a piece of black plastic with a 2 pin connector on it, right behind the airbox or in the air box that you can just pull out of a rubber grommet. if you have a 5sfe and need a replacement, go to a junkyard and just grab one and put it in your pocket and leave. if they ask you why you didnt buy anything, tell them that you were just browsing their inventory and you just wanted to see what they had for camry stuff. if you need to replace the MAF from a 1mz, then go to the junkyard and grab a MAF and pay whatever you have to pay for it.

you are welcome for this information, but i would still like to know what your problem is, and which motor....
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Old 02-24-2005, 08:12 PM   #9 (permalink)
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Thanks for the great replies. I have a 94 V-6 XLE Camry with a ( 1mz Engine ) by the way. You guys are so helpful. I will see if I can put one of those MAF in my pocket next time I go to the junk yard hehehe j/k. My original post was I wanted to know if anyone have a Camry with the 1mz engine and where the IAT is located. I do notice that other models have the IAT plug right on the the side of the air box but I can't seem to find it on the 1mz. Thanks again.
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Old 02-24-2005, 09:52 PM   #10 (permalink)
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why would you need to know where it was though???
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