Advice needed - Temp gauge - Team Camaro Tech
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post #1 of 5 (permalink) Old Oct 9th, 18, 02:22 PM Thread Starter
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Advice needed - Temp gauge

I've been reading threads related to temp gauges that aren't working or reading correct. I see a whole lot of different approaches to finding the problem. Some look easy and some look complicated. I'm a total novice here and don't want to start taking things apart that I don't need to.



Is there a smart order I should follow?


I have a 68 console gauge set up. I believe its an OER. All gauges register power. My temp gauge will jump 2 hash marks when I start the engine and stay there. I've never seen it at the 1/4 mark, which is close to normal operating temp of about 180, from what i've read.


Thanks for the input. T
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post #2 of 5 (permalink) Old Oct 9th, 18, 02:34 PM
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Re: Advice needed - Temp gauge

First, measure resistance from sensor body to engine block/head, as it should read very close to zero ohms - too much Teflonģ tape on sensor?
Next measure resistance from sensor stud to ground, only if above step is good in reading less than one ohm.
As sensor heats up, resistance drops, thus gauge reads a higher temp with less resistance.
Is the wire on sensor the same wire on gauge?

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post #3 of 5 (permalink) Old Oct 9th, 18, 06:19 PM
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Re: Advice needed - Temp gauge

Not wanting to intrude on another thread but what about a mechanical gauge? Don't remember if I used Teflon or not. Does that make a difference?

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post #4 of 5 (permalink) Old Oct 9th, 18, 07:27 PM Thread Starter
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Re: Advice needed - Temp gauge

Thanks Everett. I'll be able to check these out this weekend.

T
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post #5 of 5 (permalink) Old Dec 2nd, 18, 05:07 AM
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Re: Advice needed - Temp gauge

Quote:
Originally Posted by scblucam View Post
Not wanting to intrude on another thread but what about a mechanical gauge? Don't remember if I used Teflon or not. Does that make a difference?

Mechanical gauges work with zero electricity needed.


Having teflon tape on a mechanical gauge won't effect it working correctly or not because the engine coolant is heating the "temp sensor" or bourbon tube & bulb (part that is in the coolant) of which is filled is alcohol which will expand and basically moves a coil that in turns moves a needle on the gauge display.
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