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coop34 10-20-2016 01:13 PM
Temp Gauge Range
 
Stupid Question. What are the temperature gauge readings in degrees? i.e. What is the temperature when the needle is pointing to C (cold) and H (hot)?

davepl 10-20-2016 01:24 PM
Re: Temp Gauge Range
 
1 Attachment(s)
My weekly posting of this chart... the gauge pegs at either end of this curve. I think the highest Hot mark is 230-ish.

1968aj 10-20-2016 04:22 PM
Re: Temp Gauge Range
 
I think they are all different. I bought me a cheap laser thermometer and none of my trucks were exactly the same.

HO455 10-20-2016 04:36 PM
Re: Temp Gauge Range
 
These guages were never ment to measure temperatures with any accuracy. They are only a reference to show the driver that things are normal or going bad. They are resistance based so any change in voltage or conductivity in the circuit shows up on the gauge. They were designed first and formost to make GM money. Otherwise they would have been mechanical guages.

67swb72klb 10-20-2016 07:08 PM
Re: Temp Gauge Range
 
All sending units are not the same

davepl 10-20-2016 07:28 PM
Re: Temp Gauge Range
 
Quote:
Originally Posted by 67swb72klb (Post 7747759)
All sending units are not the same
Not sure what that means. The ones intended for use with our temperature gauge should all be the same within whatever their margin of error is.

Benny- 10-20-2016 08:23 PM
Re: Temp Gauge Range
 
Quote:
Originally Posted by 1968aj (Post 7747629)
I think they are all different. I bought me a cheap laser thermometer and none of my trucks were exactly the same.
This.

Mine was running very close the 'H' in traffic once so I pulled over and shot the lazer at the thermostat housing and head. 230. I put water in the rad and quit worrying about it. Checked it later when it close to the middle of the gauge and it was around 185 so at least I know middle and top end temps. O'Reilly $13 sending unit on stock gauge.

HO455 10-21-2016 01:30 AM
Re: Temp Gauge Range
 
Quote:
Originally Posted by davepl (Post 7747777)
Not sure what that means. The ones intended for use with our temperature gauge should all be the same within whatever their margin of error is.
Over the years as GM (and all the others) used suppliers there would be differences in the guage sets. Maybe between model years or between the models themselves. Now the aftermarket tries to use as few senders as possible to cover all the differences. See this PDF document for a lot of information on the subject. It is a copy of some information from a Corvette forum.

Just so everyone is a aware that when you click the link it WILL down load the PDF.

https://www.google.com/url?sa=t&sour...hUq5eN4dj7vrSQ

67swb72klb 10-21-2016 07:17 PM
Re: Temp Gauge Range
 
Quote:
Originally Posted by HO455 (Post 7748069)
Over the years as GM (and all the others) used suppliers there would be differences in the guage sets. Maybe between model years or between the models themselves. Now the aftermarket tries to use as few senders as possible to cover all the differences. See this PDF document for a lot of information on the subject. It is a copy of some information from a Corvette forum.

Just so everyone is a aware that when you click the link it WILL down load the PDF.

https://www.google.com/url?sa=t&sour...hUq5eN4dj7vrSQ
Yes. There is a thread on here about the differences in the ohm readings vs the temp readings


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