This sounds like you could have a vacuum leak. A good way to test for a vacuum leak is to get a propane torch. Using extreme caution have an assistant start your vehicle as you crack the propane torch open, making sure not to light it, to it's lowest setting. Run the torch along the air intake duct, intake manifold, vacuum lines, and EVAP lines. When the torch passes by the leak the engine rpm's will rise as the propane gets ingested into the combustion process. Repair the leak. I have also included a link below for you to go to:
Please go through the guides and get back to us with what you are able to find out.
Sunday, May 26th, 2019 AT 7:00 PM