Q: Temperature gauge keeps spiking and then going back down to normal is that an electrical fan issue or a thermostat issue

asked by on

Temperature gauge keeps spiking goes right back down to normal in both Highway and City driving antifreeze level is ok

My car has 160000 miles.
My car has an automatic transmission.

Hi There, It sounds like you may have a faulty thermostat or potentially a cooling fan that may not be cycling on and off properly. As you know, the thermostat regulates the flow of the coolant in your car’s engine and controls when the coolant flows in and out of the motor from the radiator by opening and closing at specific temperatures. When your thermostat is not working properly or is stuck closed, this will not allow the coolant to properly circulate through the engine, which may cause the engine temperature to fluctuate erratically or in some cases just remain hot. When the thermostat is stuck open it can cause the coolant to circulate constantly resulting in the motor never reaching the correct operating temperature. I would suggest having an expert from Your Mechanic come to your home to diagnose your cooling system.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Temperature gauge keeps spiking and then going back down to normal is that an electrical fan issue or a thermostat issue

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

Get a quote

What others are asking

Q: Stereo not working

Hi there. A common solution for a radio that does not work is to have a mechanic check any fuses or connections that go to your stereo. As for your speakers not working, this may be due to a loss...

Q: Road/wind noise from rear of vehicle

Hello. It sounds like the weather stripping around the cargo area and the rear doors going bad, which would cause an abnormally loud road/wind noise. I would recommend having the weather stripping replaced in the rear of the truck to...

Q: Q: Electrical problems

Hello. The voltage regulator is the component that adjusts and maintains the electrical system's output, making sure that there is enough power generated to meet the system's requirements. When it fails or has an issue it can cause symptoms similar...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...