[daltontate]

I recently noticed that my 2016 Trax is making a noise when accelerating. It was coming from under the heat shield. At times I can smell what smells like exhaust. Shortly after my car would not kick of A/C. The heater would not click on until you continued to fool with it. Power weakens when going up a hill or accelerating from a stop. Does anyone have a clue? Mechanic is confused as well.

 

[Traxy]

Maybe a cracked exhaust manifold. Do you have a way to check your boost and codes with an OBDII tool? Maybe you will see a code P0299 ( turbo under boost )

If you're not producing boost then you know you have an exhaust leak through a crack which might be the noise you are hearing, these manifold are casted with steel and can crack under certain conditions.

 

[daltontate]

I don't have a meter. We turned the fan off while it was idling and the noise shut off immediately. Only sounded when i accelerated. once the fan would start up the noise did too.