Skip the auto shop - Our mechanics make house calls

Q: Check Engine light on; transmission leak

asked by on

After replacing my thermostat and coolant temperature sensor, my Check Engine light came on. I was told parts needed to be KIA OEM. I also have a transmission leak, and the vehicle is vibrating at higher rate of speed.

A: The coolant temperature sensor is likely wh...

The coolant temperature sensor is likely what caused your Check Engine light. Sometimes aftermarket manufacturers produce parts of a lesser quality than the OEM. However, this does not mean that all aftermarket manufacturers produce faulty parts. It is harder to go wrong with buying a KIA OEM part than an aftermarket due to the better warranty. I would recommend having the sensor replaced again with a higher quality part and see if the engine light goes away. As for the vibration at higher speeds, the transmission leak could be a contributing factor. Transmissions have even less tolerance for low fluid than an engine. If the transmission fluid is low its operation won’t be as good. I would recommend having your transmission fluid level checked and if it is low add some. If the vibration does not go away, internal transmission damage may have occurred.

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: Car is jumping when i come to complete stop

Hi there: If by jumping you mean that the engine is running rough, then it's most likely caused by a vacuum leak, dirty or faulty fuel injectors, mass air flow sensor or perhaps other fuel system components. A "wobble" is...

Q: Overheats after about 10 mins

Overheating often has rather mundane causes such as a stuck cooling system thermostat, plugged radiator, inoperative water pump, or even simply a low coolant level. Consequently, you could probably get the overheating issue resolved rapidly by requesting an overheating diagnostic....

Q: Check Engine Light is on - 2012 Nissan Xterra

Anytime a code is stored, it will stay stored and the Check Engine Light will stay on until the ECM memory is cleared. If the problem is fixed, then the light and code should not come back. Many times 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...
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...
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...