Skip the auto shop - Our mechanics make house calls

Q: I have an engine code on a 2009 Lincoln Town Car that indicates a bad thermostat sensor or thermostat. Is this time critical to ge

asked by on

The check engine light came on the other day. I had it diagnosed and was told it was either the thermostat sensor or thermostat itself. The car is not running abnormally hot or cold and is not using any radiator fluid. Is this a time sensitive issue that needs to be corrected immediately?

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

If the engine does not get to operating temperature in a certain amount of time the computer will set a code after two complete drive cycles doing the same thing. This is an indication that the thermostat is stuck partly open or opens too soon and the engine either heats up too slow or gets too hot before thermostat opens. I would recommend replacing the thermostat and coolant sensor at the same time. Have a mechanic like one from YourMechanic install the parts for you and service the cooling system.

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!
  • Home
  • Questions
  • I have an engine code on a 2009 Lincoln Town Car that indicates a bad thermostat sensor or thermostat. Is this time critical to ge

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: I cannot shift gears.

The bottom of the gear shifter tube attached to the shifter cable and when you move the shifter it moves the shift cable. On these vehicles they may have a few different issues like the shift tube broke, the bottom...

Q: Loud motorboat noise when starting

On many vehicles, the exhaust joints are held together with bolts that have a spring coil on them and allow for a little movement as the engine twists under load. There is a possibility this coil fell as the result...

Q: I can jump my Navigator and it will idle for ever...until I shut the door. Then a mechanism next to the wiper fluid starts vibrati

Hello, thank you for writing in. The vehicle is likely having issues with the charging circuit, or related electrical system. With that being said, we need to identify the component that is vibrating and see how it is related to...

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...
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...
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...