Q: Car temp reading hot but not overheating

asked by on August 20, 2017

I recently changed my thermostat due to my temp gauge reading hot whenever I'm idle. Drove for a day or two and problem came back. Now if I drive for 20min I'll see the temp gauge moving up and then it'll go back down to normal. I recently replaced the radiator and my fans do work. Also there is no leak so I didn't suspect the water pump to be the problem.

My car has 163000 miles.
My car has an automatic transmission.

Car is running hotter than normal Inspection $79.99 - $99.99 Get a Quote

Hi Jennifer. One of the most common causes of an engine that runs hotter than normal is due to air bubbles in the cooling system. If repairs were made to the radiator and the replacement coolant was not correctly bled as recommended by Nissan, this tends to occur. However, there are other possible issues, ranging from an obstruction inside the heater core or the coolant being too thin (meaning more water than coolant). It’s supposed to be a 50/50 ratio of coolant to distilled water. To ensure you have the right repairs completed to resolve this problem, it is best to have a professional mobile mechanic come to your location and complete a car is running hotter than normal inspection.

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

Where are the horn located for the honda [odyssey](/topics-odyssey/) and how can i disconnect them

Don't know if the transmission went out.

A large transmission leak like one from a cooler pipe or a leaking transmission pan can cause the transmission to slip if the level gets low enough. Trying to drive the vehicle while the transmission is slipping does not help,...

Dealer says I can not use after market U-joints in my 2009 ram 2500

Hello. I have heard something similar from my driveshaft service, with the following explanation: The aluminum driveshafts are a "softer" metal than steel of course, and the process of forcing the old U-joint cups out, and the new ones in...

Car is making a knocking noise when stopping. Other mechanics say it's motor. Some say it's the piston

Unfortunately, there is no way to tell without doing some more testing. The timing and small details about the noises you are hearing may make a huge difference in diagnosing the issue. Lifters will make more of a "clicking"...

Dynamic Stability Control light on and stuck in 3rd gear

There is likely a wheel speed sensor issue causing the DSC light to be on. It also sounds like your transmission is in "limp' mode - being stuck in 3rd gear. The problem codes, and professional interpretation, will provide more...

Oil Pressure hot engine - 1979 Mercedes-Benz 240D

Hello. Engine timing and the oil pump work hand in hand. If the timing of the engine is off, then the oil pump won’t work as it should and this will cause low oil pressure. The first thing to do...

Car shuts off when put in to gear after turning on

Your car seems to be showing symptoms similar to a vehicle with a dirty or failing idle air control valve. This valve regulates airflow when the throttle plate is closed, and if clogged, you will have to usually keep the...

Check engine light on and recurring P0455

Hi there. The P0455 code that you are getting in the computer is a different issue than the transmission. Most of the time it is caused by a bad gas cap or a leak in the system. If the gas...

Starting issue in 1999 Dodge Grand Caravan

The first thing you want to do is find out what isn't working. If you try to turn the key and nothing happens, and the starter isn't turning over, then have the battery load tested. It could be a bad...

Related articles

The Best Used Cars to Buy If You Live in the Country
Living Living in the country is a whole different way of living. You deal with rough and uneven roads, mud, snow, rain, and ice and you need a vehicle that can stand up to these kinds of conditions with ease....
A Buyer’s Guide to the 2012 Nissan Armada
If If you need an SUV that lives up to the name “full-size SUV”, the 2012 Nissan Armada just might be your best option. With up to eight passenger seating and a 317-horsepower V8 engine that hauls 9,000 pounds with...
A Buyer’s Guide to the 2012 Nissan Sentra
The The 2012 Nissan Sentra is one of the most versatile sedans in its class. Because it has such a wide variety of options available in its four trims, buyers can choose between a bare-bones version at a very affordable...