Best Answer

Sounds like a loose connection at the coolant temperature sender. Or, the truck is low on coolant and air bubbles are passing by the sensor. This, along with a gurgling heater core, is a classic symptom of coolant that is too low before the truck overheats. Paying attention to these clues allowed me to fill up a friend's truck with coolant as it was almost a gallon low, and he didn't even know it was leaking (Dexcool). If you are losing coolant, you may have an intake leak. It is a common problem around 65 to 80 thousand miles. I would have this checked, you most likely won't see a leak, unless you look from below by the back of the intake. It ususally drips out there.

User Avatar

Wiki User

โˆ™ 2005-11-07 05:29:32
This answer is:
User Avatar

Add your answer:

Earn +5 pts
Q: Why would the temperature gauge in a 1996 Chevy truck fluctuate randomly?
Write your answer...

Related Questions

My Peugeot 306 temperature gauge keeps fluctuating whats wrong with it?

An automobile temperature gauge can fluctuate when the thermostat is opening and closing erratically. The temperature gauge can also fluctuate when the ground wire is loose.

What causes the Coolant gauge to fluctuate on 1994 Ford Mustang?


Why does the temperature gauge on your car fluctuate?

The temperature gauge on a car fluctuates because the car's thermostat is opening and closing. The gauge goes up when the thermostat closes and the gauge goes down when the thermostat opens.

What can cause the temperature gauge to fluctuate in your 2001 dodge ram 1500?

low coolant

We replace the temperature gauge in my Chevy blazer what should it read for it to not be over heating?

We replaced the temperature gauge in my 1991 Chevy blazer what is the normal operating temp?

What makes the voltage gauge fluctuate when the turn signal is on?

A short in the turn signal wiring can cause the voltage gauge to fluctuate. A loose ground wire can also cause the gauge to fluctuate.

Why does Fuel gauge fluctuate 2001 Chevy pick-up?

The sending unit in the fuel tank is probably bad.

Why would the temp gauge on a 2002 Chevy venture wnew thermostat continue to fluctuate and peg 2x red?

Head gaskets!!

What should the temperature gauge reading be on a 2003 Chevy trailblazer?


Where location of temperature gauge of 1996 Chevy lumina?

on the side of the radiator

92 Chevy replace oil pump?

what would cause a oil pressure gauge to fluctuate on my 99 Chevy truck silverado i change the sending unit it does it mostly after it warmed up

Why would the temperature gauge fluctuate?

Possibly the thermostat is opening and closing with the water pressure changes. Could be low on coolant also.

Why would a 1999 Nissan altima temperature gauge fluctuate and car is not overheating?

My Altima had that problem and it was the water pump going out. It started with temperature gauge was moving, but then it started leaking and finally the heater stopped being warm at idle.

Where is the temperature sender located for the temperature gauge on a 1990 Chevy lumina?

1990 Chevrolet Lumina temperature sender is located on the back side of the thermostat housing. The sender has a wire that goes to the temperature gauge.

Why does the temperature gauge fluctuate in cold weather and heat comes on and off?

Check coolant level Could be thermostat opening and closing due to engine coolant temperature flutuation

Why does temperature gauge fluctuate after replacing radiator hoses water pump and thermostat?

Potenially a bad temperature sensor or bad contact on the wire connector. Test for set voltage resistance according to temperature.

Why wont the temperature gague work in my 1996 Chevy silverado?

Bad temperature sending unit? Bad gauge?

How do you install a temperature gauge on a 1971 Chevy Nova 350 CID motor?

you can buy the gauge at any auto store or even walmart and there are directions with the gauge.

What should the temperature gaUge be on a 1998 chevy blazer?

210 to 220 is a safe range.

What causes the temperature gauge to quit working on 1993 Chevy Corsica?

bad temp sender usually. Bad gauge rarely.

How do you replace temperature gauge on a 03 Chevy silverado?

Buy a new Speedometer cluster. The external Temp gauge is extremely rare

What is the solution for a 2004 Chevy Impala temperature gauge that stays on 260 degrees and car is not overheating?

get a new temperature sensor.

WHAT IS THE Function of temperature coolant sensor on a 2003 Chevy Trailblazer?

seriously? it tells you what temperature you engine coolant/antifreeze is. that is how your gauge on the dash knows what your temperature is at.

Why does the temperature gauge always read hot on a Chevy Corsica?

Mine does not. Perhaps you a low on coolant.

What should the temperature gauge read on a 1995 Chevy truck 350?

195 degrees F