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Old 08-29-2006, 06:41 AM   #1
UK_SPORT
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Default Air temperature sensor on 99 UK 2.0 sport

Can anyone tell me exactly where the air temperature sensor is in this picture of my 99 Sport engine:



Thanks
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Old 08-29-2006, 08:21 AM   #2
Ramon_12345
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It is located on the front of your airbox, the side that faces you when you stand in front of the engine.

I can't edit the picture to show you but I'll try to explain:

If you look at the front of your airbox you will see a support strap with a bolt in it on the left-hand side, come horizontally across to your right and you will see a raised circular area. That is the recess that your intake air temperature sensor goes into.

I hope this helps!
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Old 08-29-2006, 08:33 AM   #3
UK_SPORT
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Hi Ramon, Firstly thanks very much for taking the time to reply. I have as of yet not found anyone else in the UK that could help me locate this part.
Looking at the picture below could you tell me is it the red circle (in which case it appears I don't have one) or the yellow circle?


The reason I need to find it is I am getting the CEL flashing and when I read the codes using the method here:
http://www.saxonfields.freeserve.co....iag%20Page.htm

It gives me 2 long flashes followed by 6 short ones. This comes out as26 which reads:
26 Air Temperature Sensor (Justy)

I really appreciate your help as nobody in the UK (even Subaru themselves) can help me to locate this part!
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Old 08-29-2006, 09:38 AM   #4
Ramon_12345
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It is the black raised area to the left of the red circle. This black raised area that I am referring to is located on the airbox itself.

The method that you used to "pull" the codes was indeed correct.

As for fixing the problem, once you find the part I can give you the information regarding the troubleshooting procedure and hope that would help.
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Old 08-29-2006, 10:05 AM   #5
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It's a little hard to spot with the shadows, but that raised area is blank on that airbox. The air temperature sensor is there on some of the earliest '00 models but on the later cars it's integrated into the MAP sensor. That's the black thing below your yellow circle, mounted on the intake plenum with two bolts, right at the bottom of your zoomed photo.
The thing in the yellow circle is the idle air controller, or IAC.
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Old 08-29-2006, 10:06 AM   #6
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Hi Ramon, I presume you mean the now green circled area? If so then there is definatley no temp sensor there and no wires to or from it.Its just a bump in the plastic moulding and inside is the same, no wires or plugs etc! I can't understand this, it gives me the code 26 but even my subaru main dealer does not know what it means!
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Old 08-29-2006, 10:08 AM   #7
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Redwagon thanks very much for your help, would I be correct to presume then that changing the MAP sensor may rectify the problem? I really appreciate your help guys, this thing has had me considering selling the car which I otherwise love!
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Old 08-29-2006, 10:26 AM   #8
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The green circled area is exactly what I was referring to

Just a thought, but maybe the reason for the code 26 is because you don't have the air intake temperature sensor hooked up. Is there a black two-wire harness connector in that vicinity?

If so it might suggest that the sensor may have indeed been in that location but for some reason may have been removed, which if that were the case, leads me to wonder why didn't the code show up earlier.

With regards to redwagon's suggestion, as far as I was aware I didn't think that the air temperature sensor was incorporated into the MAP, I thought that they were separate, but anyway we are all here to learn and help each other out.

What I typed above are just my suggestions and you can keep us informed UK_SPORT.
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Old 08-29-2006, 10:29 AM   #9
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Hi Ramon, No there are no electrical connectors of any type at all in that area. There has never been any hole there either as the plastic moulding is perfect and undamaged. I will go and look at the wiring to the map sensor and see if there is any damage etc.
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Old 08-29-2006, 12:51 PM   #10
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It's quite well documented that the air temp sensor was incorporated into the MAP sensor and the wiring diagrams reflect this. If it has four wires, it's a dual sensor.
FWIW, the code I have in my book for the air temp sensor is 111, not 26. There is no code 26 for the Impreza since the codes begin at 31... Maybe your tech has read the code wrong and you're barking up the wrong tree?
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Old 08-29-2006, 01:02 PM   #11
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"26 Air Temperature Sensor (Justy)"

Justy = not impreza. Subaru justys were small (3 cyl i think) subies. I think whomever pulled the code screwed up. I'm pretty sure every justy on the planet would be OBD1 whereas the 99 impreza is OBD2. Get a second opinion on that code
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Old 08-29-2006, 03:30 PM   #12
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Hi again guys, I read the codes myself using the flashing CEL light method listed abve and shown here:
http://www.saxonfields.freeserve.co....iag%20Page.htm
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Old 08-29-2006, 06:18 PM   #13
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here is the code (taken with my crappy P900 phone so poor quality)
It just keeps looping again and again! Is this code 26?

http://media.putfile.com/Code-87
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Old 08-29-2006, 08:10 PM   #14
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Go borrow a scanner, or buy a cable and scan from a notebook.
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Old 08-30-2006, 04:20 PM   #15
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Yes that is indeed a code 26.

If you need the information for troubleshooting a code 26 just send me a PM with your e-mail address.
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