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OT: Question for the car guys...

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  • OT: Question for the car guys...

    My Toyota Camry displays the outside temperature on the dashboard display.

    Where is the sensor located such that it's not influenced by engine heat and slipstream cooling? The only place I can think to put it is inside the rearview mirror housing perhaps?
    Regards, Marv

    Home Shop Freeware - Tools for People Who Build Things
    http://www.myvirtualnetwork.com/mklotz

    Location: LA, CA, USA

  • #2
    outside temp is outside temp - really is no "slipstream cooling" unless the sensor gets wet and evaporation takes effect...

    in fact if the speed gets extreme it works the opposite and will register higher due to the friction...

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    • #3
      I wonder where the neutural point is? Relative air-speed wise.
      Right where cooling transition into heating?

      Comment


      • #4
        The Oracle of Google says "behind the grill, forward of the rad. Drivers side, down by the bumper mount" It probably varies by model year though.

        David...
        Last edited by fixerdave; 01-25-2015, 01:44 PM.
        http://fixerdave.blogspot.com/

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        • #5
          Today I learned that some cars have a separate temp sensor for the dashboard and another sensor for the intake air temp sensor between the filter and throttle body usually. I had always thought the dash temp came from the engine computer's idea of the intake temp from the intake temp or combined temp/MAP sensor, at least on non-turbo cars.

          Seems a strange way to do things, I mean why install two air temp sensors in the engine compartment, but according to a google search, lots of car companies do this.

          Look for A30 on this diagram

          http://www.justanswer.com/toyota/4g1...mp-sensor.html

          I have a yaris which is a cousin of your car, kinda, and I haven't figured out where it's ambient sensor is.

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          • #6
            The engine air intake is pulling in air that's already been past the radiator and over bits of engine. It's likely to be a few degrees warmer than the outside air. Not a problem in most circumstances, but it gets more significant close to freezing point.
            Location- Rugby, Warwickshire. UK

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            • #7
              It is that sensor to the right side of the pic in between the grill bars. This is on my ford excursion but this is what most of the outside temp sensors look like.



              Andy

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              • #8
                My daily driver is a 1951 Ford F1 pickup. I just went out and tried to locate these sensors and was not able to find them.
                What gives???
                Oh, by the way this is an original vehicle, not been modded in any way!!!

                THANX RICH
                Last edited by v860rich; 01-25-2015, 06:49 PM.
                People say I'm getting crankier as I get older. That's not it. I just find I enjoy annoying people a lot more now. Especially younger people!!!

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                • #9
                  This could be interesting once Marv responds. Should be educational.

                  -Bob

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                  • #10
                    Originally posted by v860rich View Post
                    My daily driver is a 1951 Ford F1 pickup. I just went out and tried to locate these sensors and was not able to find them.
                    What gives???
                    Oh, by the way this is an original vehicle, not been modded in any way!!!

                    THANX RICH
                    Rich,

                    Your outside temperature sensors on that vehicle are located at the end of the backup (as in auxiliary) turn signals. There's also a wind sensor that can be used to judge vehicle speed. (Most modern vehicles don't have THAT!) Just be sure not to signal a left turn at the same time someone coming from the other direction is signaling a left turn. :-)

                    Puckdropper

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                    • #11
                      Originally posted by v860rich View Post
                      My daily driver is a 1951 Ford F1 pickup. I just went out and tried to locate these sensors and was not able to find them.
                      What gives???
                      Oh, by the way this is an original vehicle, not been modded in any way!!!

                      THANX RICH
                      IMHO The best looking Truck anyone ever built.
                      And one of coolest looking Engine ever as well, with the Dual Water-Pumps.
                      Nearly as beautiful as the 409.

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                      • #12
                        Originally posted by v860rich View Post
                        My daily driver is a 1951 Ford F1 pickup. I just went out and tried to locate these sensors and was not able to find them.
                        What gives???
                        Oh, by the way this is an original vehicle, not been modded in any way!!!

                        THANX RICH
                        I used to have a 51 F1. You sensor is located at the middle of your left index finger.You have to stick it out of the driver side window. 8^)
                        Randy
                        Do yourself a favor and see if your TV carrier has America One News Network (AONN). 208 on Uverse. It is good old fashion news, unlike the networks, with no hype, bias or other BS.

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                        • #13
                          Originally posted by v860rich View Post
                          My daily driver is a 1951 Ford F1 pickup. I just went out and tried to locate these sensors and was not able to find them.
                          What gives???
                          Oh, by the way this is an original vehicle, not been modded in any way!!!

                          THANX RICH
                          Keep looking!
                          Krutch


                          Mentally confused and prone to wandering!

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                          • #14
                            Thanks for all the replies. Some of them even addressed my question.

                            I'm taking the car in for servicing tomorrow. I'll try to remember to ask the mechanic where it's located and will report his answer here.
                            Regards, Marv

                            Home Shop Freeware - Tools for People Who Build Things
                            http://www.myvirtualnetwork.com/mklotz

                            Location: LA, CA, USA

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                            • #15
                              Originally posted by mklotz View Post
                              Thanks for all the replies. Some of them even addressed my question.
                              That happens on occasion. Maybe by mistake, even.
                              All of the meandering keeps the discussion lively, anyhow.

                              Be curious what you find out.

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