A faulty Engine Coolant Temperature (ECT) sensor may lead the turbocharged 2.0L I4 LSY gasoline engine in certain GM vehicles to run hot or even overheat. To be clear, these vehicles are not under an ...

It sounds like you’re dealing with a fuel-air mixture issue when the engine is started from dead cold. If the mixture is too rich – which would be my suspicion – then black smoke is often a ...