I have a 67 Plymouth Valiant. The other day the ammeter and temperature gauges stopped working. At first, the temp gauge was going up and down rapidly. Then both stopped completely. The temp gauge is

engine - Car temperature displaying below Cold or just ...

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Jun 25, 2012 - Today I was boiling inside my car as it was a very hot day and my ...cold, it almost never goes up to even 1/4 of the temperature gauge, the ... Where I live, it's hot enough that even with the thermostat wide open the engine won't stay at C.. ... How to Match Skin Color Between Pictures Of The Same Person In ...

What does it mean when my car's temperature gauge is halfway ...

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Aug 23, 2011 - I think my temperature gauge is usually all the way to the left, which I think is "cold" (okay). ... before steam poured from under the hood of my car and I had to pay $217 ... Why does my A/C stop blowing cold & my temperature gauge goes toHOT? ... But the battery won't keep a charge after sitting over night. my temp gauge always stays on cold. never moves.? ' Yahoo Answers
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circuitry behind the gauge panel. you will have to pull the dash to see behind there and track the problem down

Both issues could be normal to a degree. The engine temp would go up some when the truck stops moving, and the oil pressure would go down some when the engine returns to idle.
Are the two gauges reading out of normal range ?

have you cheched the colant temp sensor

Check out related help links with solutions to troubleshoot the problem:---
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2004 Toyota Tundra: Oil Gauge and Temp Gauge Not Working?

http://howtobyme.blogspot.in/2012/05/2004-toyota-tundra-oil-gauge-and-temp.html

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Toyota 4Runner: Temperature Gauge Sensor http://technoanswers.blogspot.in/2012/04/toyota-4runner-temperature-gauge-sensor.html

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Temperature gauge sits over half way mark? http://schematicsdiagram.blogspot.in/2012/04/temperature-gauge-sits-over-half-way.html
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http://technoanswers.blogspot.com/2012/01/heater-blows-intermittently-and-temp.html
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These details will help.
Thanks.

check and make sure your water level is all the way up some times it takes a day or two to work all the air out. if its full than ur water pump may be going bad or the electric temp control for the heater may be bad

check to see if fan stays on all the time
if not i have seen thermostats put in backwards
the thermostat is what holds water to the block to warm
to op temp then open to cool

Thermostat might be your cause or a blown fuse maybe

well start by checking all fuses but it sounds like a bad ground wire somewhere on the car

change the thermostat it is stuck open
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