Q: Temp gauge goes up and down while driving 2006 Infiniti G35

asked by on

I recently got my coolant flushed and fixed a leak also got a new thermostat but my car temp gauge keeps going up and down and now my engine fan stays on while driving it only turns off when car turns off.

My car has 139000 miles.
My car has an automatic transmission.

Hi there - either the recent cooling system work did not thoroughly bleed all the air out of the system, or you still have a bad thermostat - even the new one. A properly working thermostat should manage coolant temperature so that the gauge is steady in the center of the gauge. I recommend an overheating inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, and give you an accurate assessment of damage and cost estimate for repairs.

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. Temp gauge goes up and down while driving 2006 Infiniti G35

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: The abs and slip and vdc off light comes on

Your car is equipped with wheel speed sensors at each of the four wheels which monitor wheel speed while relaying this information constantly to the ABS and traction control system which are controlled by the car's ECU. When the ECU...

Q: Driver's headlight out

You most likely need a bulb replaced, however, I recommend replacing both bulbs for the left and right side so they burn at the same brightness, and the other side does not burn out shortly soon after. I recommend seeking...

Q: Will a sticking valve burn out my variable valve timing solenoid?

Hi there. Typically a sticking valve does not cause the VVT solenoid to fail, but it can increase vacuum pressure inside the motor that will lead to other timing related issues, which can trigger the same error codes. Anytime...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...