Q: Temp Gauge marks higher than usual

asked by on February 04, 2017

So I had over heating when I got the car 6 months ago and I went to mechanic and replaced the radiator fan, after that it was all normal. 4 months later, now, one day the gauge was going up to the third line at idle and when inwas on the road it would go down, I checked it and it was missing coolant. Put some and it fixed the problem, two weeks later , today, the gauge goes up at idle and I put anti freeze and everything , the company resovoir was higher than the full line, took some out, and it was at the line and added coolant and blended it. Still does the same... I'm on the road it's normal, but when I'm on idle or parked it goes up.. thanks.

My car has 230000 miles.

Hi There, It sounds like your vehicle tends to overheat when sitting at an idle more often than when driving at highway speeds. It sounds like you may have a faulty coolant fan relay. The coolant fan relay helps to maintain the proper coolant temperature by turning on and off at specific temperature thresholds. When this relay is not working properly, this can cause the fans to come on intermittently, stay on all the time or sometimes not at all. When this happens you will notice a temperature spike and drop occasionally as the fan comes on and off. I would suggest having an expert from Your Mechanic come to your home to diagnose your coolant fan.

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 do I check the brake fluid level?
The brake fluid is necessary for the brakes to function correctly. Locate the tank that holds the brake fluid which is located on the back left side of the car under the hood. On the side of the tank, you’ll...
Tires grinding when I turn left or right
This is probably something that needs to be looked at as soon as possible. Two likely causes could be the either an inner fender liner that is dragging in the tire or the plastic belly pan has either come loose...
Exhaust manifold bright red when car is on
Hi there. An exhaust manifold that reaches high temperatures is a sign of a blockage in your exhaust system. This blockage stops excess emissions to be burned off. The excess fuel and carbon will build up causing your manifold to...
message center displays "mech error"
Hello. The "mech error" message is displayed when it is detected that the 6-disc CD changer has had a mechanical problem. Usually this error means that the unit will need to be replaced with another. You may want to bring...
Car dies on exit ramp coming off interstate
Hello. I will be happy to assist you. I believe the problem you are having could be a result from a faulty mass air flow sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement) or a throttle position sensor (https://www.yourmechanic.com/services/throttle-position-sensor-replacement). Each component heavily inputs on the air fuel ratio of...
vibrations and steering wheel shimmy/shake between 45-60 MPH.
Hey there, thanks for writing in. You may want to have the CV (constant velocity) joints and axles (https://www.yourmechanic.com/services/axle-cv-shaft-assembly-replacement) inspected. When these wear out or become damaged in any way, this can cause a vibrating problem at both high speeds...
Dash lights flashing on while driving
Hello, thank you for writing in. Electrical issues can be incredibly difficult to diagnose. Typically when every dash light turns on, there is an issue with the main power supply. This means an issue with the battery, alternator, wiring, or...
My service engine light is on for Nissan Altima hybrid
Hi K.P. Thanks for writing in tonight about your Nissan Altima. The service warning light is illuminated anytime routine or scheduled maintenance is due. Although having oil changes done on a normal basis is the most common service, other services...
Hazard lights wont shut off on my 2007 Subaru Forester
Generally this is something caused by the flasher relay (https://www.yourmechanic.com/services/hazard-turn-signal-flasher-replacement) going bad. This is a small relay that allows the lights to flash based upon current flow and a resistor inside that causes them to flash. When this is faulty,...

Related articles

2012 Chrysler 200 vs. 2012 Chevrolet Malibu: Which One Should I Buy?
When you are looking for a small-range sedan, you need to get somewhere quickly and inexpensively, and may even need to take a few kids with you. Slightly larger than a commuter car, these mid-size options offer decent gas mileage,...
The Best Used Cars to Buy If You’re a Massage Therapist
If If you're a massage therapist, one of the cornerstones of your business has to be that you don’t keep your clients waiting. That means you need a vehicle that’s reliable. You also will have to move your gear, including...
Chrysler Certified Pre-Owned (CPO) Car Program
If If you are shopping for a used Chrysler vehicle, you may want to check out cars under their certified pre-owned program. Many manufacturers have a certified pre-owned (CPO) program, and each one is set up differently. Read on to...