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Hello, my name is***** your check engine light on? Does pressing down gas pedal help get it started? Thanks.
I'd start by checking diagnostic codes, the iac can cause this but does not usually set codes. You can have diagnostic codes checked at your local parts store for free, write them down, and let me know what they are. Let me know if you have more questions, thanks.
It sounds like you may have a possible vacuum leak but if check engine light is on first step is checking codes.
Most likely, probably around the PCV valve or PCV valve is sticking open.
The oil separator is an ovalish canister mounted on the drivers side of the block under the intake manifold. It has a 5/8" piece of hose coming out of it. At the end of this short hose the PCV is inserted in-line, with another piece of hose that goes up around the front of the intake manifold and on to the underside of the upper intake, near the throttle plate. Here is a picture, let me know how it goes. If no obvious leaks then continue with getting codes checked. Thanks.
No problem, I'll talk to you then. Have a good night!