Skip the auto shop - Our mechanics make house calls

Q: Check engine light on, temperature goes to hot, noisy engine, car shuddring and turns off.

asked by on

My car has only 15,000 miles and it has been showing check engine light on. When it happens, the temperature goes to hot and quickly goes back down. When I start decelerating, the engine gets very noisy and the car starts shuddering and turns off. I've got codes indicating low voltage from the coolant temperature. I've had cylinder 1 and 2 compression tested and it is all fine. What could be the problem?

Fault codes need to be read out from the engine computer. There is a technical service bulletin (TSB) out by Lexus that points to a faulty thermostat causing a Check Engine Light, and that the thermostat should be replaced based on the fault codes stored. The engine coolant would need to be drained, refilled, and then bled after the repair. You may want to enlist the help of a mechanic, such as one from YourMechanic, who will have the tools and training to complete this repair. Please note: never attempt to service the engine cooling system while the engine is hot or the system is pressurized, as doing so could result in serious injury.

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
  • Check engine light on, temperature goes to hot, noisy engine, car shuddring and turns off.

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: Putting transmission in reverse grinds gears but not when changing any of the forward gears.

Hi there. The issue could be either the shifter fork being bent or the reverse gear is burned up causing the transmission to grind when going in reverse. I recommend seeking out a professional, such as one from Your Mechanic,...

Q: Warning message on after replacing brakes

Your vehicle has two sets of brake pads. Front pads and rear pads. Depending on which ones were replaced, the other set might need replacing. The other possibility is that you have an issue with a caliper. If the caliper...

Q: p0340

Some of the common causes of Diagnostic Trouble Code P0340 include camshaft position sensor circuit wiring that is broken, shorted, or corroded; a camshaft position sensor circuit connector that is broken, shorted, or corroded; a faulty camshaft position sensor; a...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
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.