Skip the auto shop - Our mechanics make house calls

Q: Temperature gauge isn't working properly

asked by on

Temperature gauge fails to reach the usual middle position when driving and is usually situated nearer towards the 50 (lowest value) rather than 90 (normal middle value). However, if I am stationary with the engine running or sat in traffic, then the temperature gauge manages to reach and maintain the usual middle 90 value, only dropping once I start moving again.

My car has 125000 miles.
My car has a manual transmission.

A: This may suggest a faulty cooling fan relay...

This may suggest a faulty cooling fan relay. As you may know the helps to maintain the proper coolant temperature by turning the fans on and off at specific temperature thresholds. When this switch is not working properly, this can cause the fans to come on intermittently, 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. If you need help with this repair, I would suggest having an expert from YourMechanic come to your home to diagnose your issue firsthand and service your coolant fan switch as necessary.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Trans shifts when cold gets stuck in 2nd when temp hits about 210

Hello. A transmission that gets stuck in 2nd gear can be caused by a few things. A few possible causes are, as you suspected, a faulty speed sensor, a faulty shift solenoid, or even a mechanical issue. The speed sensors,...

Q: car will crank battery fine but will only start with jump leads

Hi there: If you're having these issues only when it's really cold outside, it's possible that the battery is low on cold cranking amps. Batteries are measured in cold cranking amps which is the amount of amperage the battery can...

Q: I have an EPC problem on my 09 Audi A4. Any suggestions?

Hi there. The EPC (Electronic Power Control) light is just a way to tell you that there is a problem with the drive by wire system. The issue could be the throttle pedal position sensor not registering to the computer...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.