hey guys.
quick question, 91 4runner, 3VZE have searched but cant seem to find anything, as well in the manual i downloaded from the sticky

where on earth is the air intake temperature sensor? and how do i test it.. code 24 i believe.. as well whichever code for coolant temp sensor but i got that one covered.. please help! my search for my terrible idle is seemingly coming to an end! haha me---> toyota

 

anyone at all?

 

im not sure that there is an "air intake temp sensor"

 

really? because jumped te1 and e1 terminals and came up with code 23/ 24 which is intake air temperature sensor/ intake air temperature circuit

 

Intake air temp sensor is the little white probe sticking down into the AFM.It will be on the intake tube side,(have to pull the AFM off) measures the temp of the air that is coming through the AFM....can be cleaned with electrical contact cleaner...if the problem persists, more than likely the AFM is bad. The wires that connect to it go through the main plug that is connected to the top of your AFM.

 

AFM? air flow meter? maybe haha

 

I stand corrected... just chalk it up to being a noob!!

 

Use an ohm meter and test out your AFM. It takes all of 10 mins to do, if the air temp sensor is wired into it, you will be able to find out the problem.

 

http://www.ncttora.com/fsm/1993/engine/92volumeai.pdf

I never heard of a temp sensor, so it must be part of the AFM. Here is how to test it.

 

The temp sensor is inside the AFM, if you remove the plastic cover you can get to it and were it plugs in.

 

haha its all good! at least you took the time to have a look see, as i said i cant find much on it myself so if it wasent for the code reading i wouldnt have realized it myself!

to everyone else thanks mucho any more info would help greatly

is afm air flow meter?

 

Yes, Volume Air Flow Meter.

 

awesome, thanks jay.. so the intake air temperature should be located inside of that? or should i be able to see the sensor with the AFM still on?.. i guess tomorow morning i will find out if i get lost ill post some pics

 

not hard and with pics there aint nothing yotatech cant answer.. theres always some bored yota nut on here!

 

I too am getting a code 24 for the IAT sensor. I just replaced the AFM, but I am still getting a check engine light/code. However, I pull up the replacement IAT sensor at Auto Zone and get a little message that says the sensor cannot be used on pollution controlled vehicles. What does that mean? I just passed smog here in California and won't be due for another 2 years. How am I supposed to change this sensor and get rid of the light/code, if I'm not supposed to use it on pollution controlled vehicles? Anyone have an idea, or is this some stupid California thing. BTW, I have a 1990 4Runner SR5 V6 with a new engine, new everything, new sensors (except the IAT), etc. Any help would be great!!!

 

You can test the sensor:
- http://www.4crawler.com/4x4/CheapTri...tml#AFMtesting

Then see if that AFM signal is getting back to the ECU by testing the ECU connector pins for that same signal:
- http://www.4crawler.com/4x4/CheapTri...roubleshooting

 

Hey guys, my IAT is now playing up as well - short of replacing the whole afm what aftermarket IAT sensor can I use? OEM part is $220!

I did think of replacing it with a 7MGE upgrade...

 

The iac is the air intake temp sensor I believe and it is located in the throttle body!

 

my 93 Toyota pickup turns over but wont start up I jumped the te1 and e1 to get the codes. the truck is throwing codes 24 and 31. Since I started driving the truck it did it 3 different occasions and it was always random. Can the air flow meter really cause the truck to not start up? I can also spray starter fluid in the intake and it will start up off of starter fluid then die again. can anyone help me?

 

You bet, air flow meter also has the fuel pump contacts that keep the fuel pump running on the EFI engine:
- http://www.4crawler.com/4x4/CheapTri...tml#AFMtesting

Might try the fuel pump test jumper as it should be running while the starter is running:
- http://www.4crawler.com/4x4/CheapTri...shtml#FuelPump