Q: Temperature gauge goes up to 3/4 then back down to half.

asked by on June 24, 2017

2000 honda civic ex, temperature gauge goes up to 3/4 then drops back down to half after a few seconds. thermostat was replaced about 2-3 years ago. Radiator was replaced last month. Never seen the gauge act like this. Would this be a water pump problem?

My car has 237360 miles.
My car has a manual transmission.

Car is overheating Inspection $79.99 - $99.99 Get a Quote

This kind of behavior may mean that you are low on coolant. Normally the tip of the temp sensor is submerged in coolant. When the coolant is low, there may be an air pocket around the sensor that allows it to get as hot as the surrounding metal until the coolant starts circulating and covers the sensor. Check the coolant level at the radiator with the engine cold and idling and the heater on. Top it up with 50% coolant and water mixture. It may never have been correctly filled after the radiator replacement or there may be a small leak in the system. To have it fully evaluated, you can contact Your Mechanic to have a technician come out to your home or office to check out your temperature problem and let you know what is the solution.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

How to fix loud lifter noise?

Add 1 quart of ATF to the engine oil and run the engine for 15 minutes at 2,000 rpm’s. This will thin out the engine oil and clean out the lifter with the high detergents. Then drain the oil and...

I hear a slight knock that doesn't get louder when you accelerate

Hello there. Knocking in your engine, also described as pinging, can mean one of several problems. Some may be easily fixed while others may indicate major damage. The knocking sound often occurs when the fuel and air mixture is incorrect,...

Replaced E38 computer on 2006 Pontiac g6. Should I try it out or does it need programming first?

The computer (ECM) will need programmed to the VIN of your vehicle before attempting to operate the vehicle. If you need further assistance with programming your computer, then seek out a professional, such as one from Your Mechanic, to help...

uncomfortable driver's seat

Hello, thank you for writing in. Even with the adjustments you can make, seats are designed to be one size fits most. With that being said, before you invest too much money into a seat cover, or new seat, you...

Compass stuck on N with CAL (solid) indication

Once you get to a clear parking lot that you can make some tight circles without a problem put the compass in CAL mode and then go slow in tight circles for three to fut times or until the CAL...

I have a 2009 Nissan Maxima and the air conditioning is not blowing cold air at all. What could be the problem?

Hi there. If the air conditioning is not blowing cold air, then either the condenser fan is not coming on or the system is low on refrigerant. Check the system and see if there is a refrigerant charge. If there...

Carburetor installation costs and adjustment.

Billing question sent to CS for installing and adjusting cost of a carburetor.

Car battery issue

It is possible the systems that charge the battery and the battery itself may be damaged from the shorting of the wires. I would recommend charging the battery and the recheck the battery holds a load or needs replaced. Then...

Do have any idea what to look at first.

The first thing I would check is to see if you broke a belt. The power steering pump is driven by a belt, and if it breaks, you will have loss of power steering and the wheel will be much...

Related articles

A Buyer’s Guide to the 2012 Honda Civic
America’s America’s best-selling compact car, the Honda Civic has been around for nine generations now, and the 2012 models boast some very exciting features and upgrades. Including coupe and sedan styles, the Civic continues to be one of the most...
The Best Used Cars to Buy For Fuel Economy
Saving money on gas is an important factor to consider when buying a car. The Honda Civic, Toyota Prius, and Ford Fusion all have great fuel economy.
Top 10 Best-Selling Cars of 2016
Ford F-series pickup trucks, Toyota Camry, and Honda Civic are some of the best-selling cars of 2016 and all deliver on reliability and efficiency.