OK! I visually inspected the hoses this weekend and they seemed all right. Cleaned the bottom of the air (engine) filter housing as there was still tiny bit of oil left.
This morning is the first time I drove the car after resetting the codes. My commute is about 25 miles and no CEL yet! But the hissing sound is still there and idling funny. When I called the mechanic and told him what's going on, he said it could be the MAF or even the spark plugs because there might still be some oil residue (and that may be why it is idling funny - don't know).
I will take the car on Friday and we'll see. But I assume it's the intake air leak because he needed to move things around when he changed the hoses.
BTW, he had cleaned the intake tubes and throttle body.
So I keep my fingers crossed and let you guys know.
Thanks for all the help.
Bob
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