"Slow" outside air temperature sensor? - TCCoA Forums

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post #1 of 22 (permalink) Old 02-20-2016, 05:19 PM Thread Starter
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"Slow" outside air temperature sensor?

I have the SATC in my 1997 Thunderbird, and last weekend it was -12 here in MN. Today, it's 38 degrees outside. I pushed the Outside Temp button on the SATC and what did it say? -6! As I drove around on a few errands, it finally made it's way up to 6 above, and seemed to be very slowly climbing up to actual temp, but my question is this...

Is the sensor going bad? How big a deal is it to replace? Does the sensor affect engine function at all?
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post #2 of 22 (permalink) Old 02-20-2016, 06:22 PM
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In sequence -

1) Probably, unless the air in front of the condensor / radiator is actually that cold.

2) I haven't replaced one, but it's on the bottom rail in front of the condensor on the passenger side. If you can get your hand up / down there, should be easy. MIGHT need to pull the bumper cover to get to it, though.

3) Nope, not anywhere near connected.

RwP
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post #3 of 22 (permalink) Old 02-20-2016, 06:36 PM
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Actually it's dead center right below the hood latch bracket, the bracket bolt is accessible from the top and the sensor/bracket can come out underneath.
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post #4 of 22 (permalink) Old 02-20-2016, 07:27 PM Thread Starter
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Thanks guys.

I can attest, it has been in the high 30's, low 40's the last couple of days. Supposed to be warm tomorrow and all through the week.

I haven't driven into any snowbanks, can't think of any reason the ambient outside air would be -6 just around my car when everywhere else it's warmer.
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post #5 of 22 (permalink) Old 02-20-2016, 08:55 PM
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Mine does similar nonsense. It's like it "remembers" the last temperature it was sensing then slowly changes to get down (or up) to the current temperature.
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post #6 of 22 (permalink) Old 02-20-2016, 09:01 PM Thread Starter
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Mine does similar nonsense. It's like it "remembers" the last temperature it was sensing then slowly changes to get down (or up) to the current temperature.
Mine has done that since I got the car. It "remembers" the temp inside my garage usually for the first few miles, but I've never had it remain 30 degrees off of actual like that.

I'll look into a replacement.
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post #7 of 22 (permalink) Old 02-20-2016, 09:06 PM Thread Starter
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Speaking of which, what actual part is it?

I highly doubt it's the outside air temperature/charge sensor as that's in the intake.

Is it the ambient air temperature sensor?
http://www.rockauto.com/en/moreinfo....sn=581&jsn=581
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post #8 of 22 (permalink) Old 02-20-2016, 09:11 PM
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I tried finding it a few years ago. Not available new anymore IIRC. Different part than the IAT sensor.

I ended up getting a used one off here to install... but lost it before I did.
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post #9 of 22 (permalink) Old 02-20-2016, 09:14 PM Thread Starter
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I tried finding it a few years ago. Not available new anymore IIRC. Different part than the IAT sensor.

I ended up getting a used one off here to install... but lost it before I did.
I know that the IAT goes in the intake. The one I found on rock auto is an ambient air temp sensor, sounds like it would be the one. I'm tempted to go out to the garage to look.
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post #10 of 22 (permalink) Old 02-20-2016, 09:25 PM
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TX12? Yup, that's the one. Darn, I need to get one now.
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post #11 of 22 (permalink) Old 02-21-2016, 09:36 AM
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post #12 of 22 (permalink) Old 02-21-2016, 10:07 AM Thread Starter
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Excellent, thank you!
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post #13 of 22 (permalink) Old 02-21-2016, 06:13 PM
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You're welcome. I took that photo quite some time ago when I had the front bumper cover removed.

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post #14 of 22 (permalink) Old 02-21-2016, 06:17 PM Thread Starter
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You're welcome. I took that photo quite some time ago when I had the front bumper cover removed.
Thankfully I am dexterous enough to unbolt it, fish it out, unplug it, re-plug it, and fish it back in and re-bolt it up. Not too hard to get to from the top of the car.

Anyhow, even though it's 28 out, it still thinks it's 9 out after leaving it unplugged long enough to discharge. So, a new one is on it's way.

Thanks again for the detailed view. the description from earlier also was very helpful.
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post #15 of 22 (permalink) Old 02-21-2016, 08:29 PM
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BTW, All temperature sensors depend on the EEC being at "normal" temperature. (EEC or other brain box)

They use the EEC local temperature as the "cold reference junction", which is a diode these days.

If the eec is really hot of cold, you get strange readings until everything stabilizes.

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post #16 of 22 (permalink) Old 02-28-2016, 03:06 PM Thread Starter
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Well I replaced the IATC this afternoon, seems to be working just fine now. Next up is the auto-down mod on the windows, along with replacing the pucks in the regulator.
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post #17 of 22 (permalink) Old 03-22-2016, 09:20 AM
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I was looking at this over the weekend, but I couldn't figure out where it's located. I know it's behind the bumper cover, but short of removing it, how do I even get to it? @Woodman , you got to it from the top side, and fished it through, but I looked through the top side between the bumper and was unable to even identify it's exact location.
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post #18 of 22 (permalink) Old 03-22-2016, 11:15 AM Thread Starter
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I was looking at this over the weekend, but I couldn't figure out where it's located. I know it's behind the bumper cover, but short of removing it, how do I even get to it? @Woodman , you got to it from the top side, and fished it through, but I looked through the top side between the bumper and was unable to even identify it's exact location.
I'll take some pictures from the front of the car. It's mounted to the front of the radiator support, directly underneath the hood retention latch (not the release, the hook that holds the hood down) just slightly left of center on the front of the radiator support.
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post #19 of 22 (permalink) Old 03-22-2016, 05:41 PM Thread Starter
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Here it is, just on the left, on the little bracket with just one bolt.
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post #20 of 22 (permalink) Old 03-22-2016, 06:12 PM
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Oh. That seems somewhat easy to get to then. I'll take a look at this again.....probably tomorrow. I'm driving the wife's Taurus today .
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post #21 of 22 (permalink) Old 03-22-2016, 06:38 PM Thread Starter
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Oh. That seems somewhat easy to get to then. I'll take a look at this again.....probably tomorrow. I'm driving the wife's Taurus today .
I didn't have trouble. Unbolt it, fish it out by it's cable, replace it, then fish it back in.
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post #22 of 22 (permalink) Old 03-22-2016, 06:40 PM
No, Mr. Lemmywinks, No!!!

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Dude; wash all that salt off!!!

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