Hello guys,
As the title of my post says, my engine idle (while in drive gear) fluctuates between 550 and 750. When the fluctuation occurs, there are vibrations that come through the steering and pedals. This fluctuation occurs without any accessories on (defroster, air conditioning, etc.). I lifted up the hood yesterday to see if my untrained eyes could notice anything amiss and I heard a hissing noise. After roughly narrowing down where the noise was coming from, I think it is coming from the area around the intake manifold. There are alot of vacuum hoses there as well.
My question is, should I notice any sort of air hissing noise in that area during normal engine operation or does this seem irregular to you?
Also, my check engine light is not on. I would figure the check engine light would be on if I had a vacuum leak..?
I drive a '14 Pro4. Lemme know. Thanks in advance.
As the title of my post says, my engine idle (while in drive gear) fluctuates between 550 and 750. When the fluctuation occurs, there are vibrations that come through the steering and pedals. This fluctuation occurs without any accessories on (defroster, air conditioning, etc.). I lifted up the hood yesterday to see if my untrained eyes could notice anything amiss and I heard a hissing noise. After roughly narrowing down where the noise was coming from, I think it is coming from the area around the intake manifold. There are alot of vacuum hoses there as well.
My question is, should I notice any sort of air hissing noise in that area during normal engine operation or does this seem irregular to you?
Also, my check engine light is not on. I would figure the check engine light would be on if I had a vacuum leak..?
I drive a '14 Pro4. Lemme know. Thanks in advance.