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Discussion Starter · #1 ·
Ok, so I am installing a autometer temp gauge and everytime I run the rhino the temp pegs out at 250 degrees. I know its not overheating. Anyone know a trick or have a solution to why the gauge would be reading high?

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Discussion Starter · #3 ·
Purged it by pulling out the purge screw and lifting the front.

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Discussion Starter · #5 ·
I am almost 100% sure its not trapped air. When I turn the key on the gauge moves to 150.

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Ok, so I am installing a autometer temp gauge and everytime I run the rhino the temp pegs out at 250 degrees. I know its not overheating. Anyone know a trick or have a solution to why the gauge would be reading high?

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What does the guage say when you turn on the ignition and the engine is cold............
 

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99% of the time when people are 100% sure its not trapped air its trapped air... :biggrin:

If it reads 212 in boiling water on a bench test then it's not the meter or the sender...

Where is the sender installed...
 

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BEST place for it IMO...

Shouldn't have a ground problem then...

Probably air... :)

Only possibilities...

Bad ground...trapped air...sender nfg...gauge nfg... bench test gauge/sender...if good then good...

If you had an isolated inline adapter it could be ground...

Your sender body is ground right....???

Battery cable attaches to motor...no better ground than threaded into motor...
 

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Discussion Starter · #10 ·
The sender only has one wire so I am assuming that ground is the sender body.

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Correct... I already knew that ... I just wanted to make sure we both knew it... :)

Most of the senders are a variable resistance...

Thermistor controlled...

Resistance changes over temperature along a known constant curve...

The gauge knows how much the resistance changes according to how much the current changes...and is calibrated to for that...

Not real sure why air pockets make them read high but they do...

Bench test the system in boiling water...if it doesn't work... it is nfg...

Be careful with your battery around water... :)

Just to be clear you cannot just dunk a sender connected to a high current battery in water...just in case anybody is thinking that is what I mean...but it will be very close to 212 when you take it out of the water and connect the leads...

You CAN call Autometer for tech assistance... business hours during the week...
 
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