Skip the auto shop - Our mechanics make house calls

Q: My temp gauge reads low, but I replaced the thermostat.

asked by on

After the first hose broke, I didnt think about the after affects. I looked some solutions, but none worked for me. My thermostat was stuck at cold after the first hose broke, but still is stuck even after I put a new one in.

A: In order to properly test the cooling syste...

In order to properly test the cooling system you’ll need to test the temperature at the temperature sending unit with a laser temperature tester or something equivalent. You’ll also need a scanner to look at the reading to the ECM for comparison. If you are getting the actual engine temperature around 185 degrees Fahrenheit or close to it, compare it to the computer reading and it should be at or near this reading. If it is reading lower than 5 degrees less then I would replace the sending unit. If you’d like to get this fixed, consider YourMechanic, as a certified technician can assist you with this check and help you make the necessary repair.

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: What should I do with the air bags after they have deployed?

When an air bag has deployed, it will need to be replaced. After an accident in which the air bags have been deployed, get your vehicle serviced immediately. Tip Even if your air bags did not deploy, you should have...

Q: I have replaced radiator watepump ect still running hot

If you did not replace the thermostat then you should replace it and then refill the system after bleeding out all the air in the system. Check to make sure the fans come on when the temperature goes up. If...

Q: How do I use the air vents?

Your vehicle is equipped with air vents on the center and sides of the instrument panel. These vents are great customizable tools to manually direct airflow. Simply turn the thumbwheels near the corresponding vent to open or close the vents....

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...