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Engine Specific Info and Questions => IDI Engine => Topic started by: wdkingery on October 21, 2012, 05:34:50 pm

Title: the values presented by the temp sensor
Post by: wdkingery on October 21, 2012, 05:34:50 pm
Anyone know about using the temp sensor on the motor?
I'm interested in getting an idea of how cold the motor is when I fire it up, and again after sitting in the cold, by using the information the temp sensor provides.
I assume the temp gauge is just a volt meter?
Title: Re: the values presented by the temp sensor
Post by: 8v-of-fury on October 21, 2012, 06:24:34 pm
The sensors provide a resistance reading that the gauge then displays as a visual for you. I do not think they will give a reading for that low of a temperature.
Title: Re: the values presented by the temp sensor
Post by: Wayland on October 21, 2012, 07:37:05 pm
What about using one of those cheap infrared thermometers?
Title: Re: the values presented by the temp sensor
Post by: wdkingery on October 21, 2012, 07:43:22 pm
Lol well yes I do have one of those.. I was kinda thinking about just having a rolling temperature number
Title: Re: the values presented by the temp sensor
Post by: ORCoaster on October 21, 2012, 07:47:56 pm
I have a couple of digital gauges on my WVO system that run off 12 vdc and give me accurate temps to the tenth of a degree between 32 and 100 degrees F.  Then good for single degree to 185.  Didn't cost much but the shipping and wait from China was a bit high and bit long.  How about a battery operated remote like you would use outside.  Just put it someplace far away from the exhaust temps.
Title: Re: the values presented by the temp sensor
Post by: 745 turbogreasel on October 21, 2012, 09:37:34 pm
Most temp sensor are a logarithmic scale like this
(http://repairguide.autozone.com/znetrgs/repair_guide_content/en_us/images/0900c152/80/1b/fc/4a/medium/0900c152801bfc4a.gif)
And the gauge oftenhas a circuit o provide a fat dead spot around normal operating temp.

Your Bentley should have a few values or full char for your particular car and sensor.