Okay so I have a V6 2004 Ford Escape (automatic) with 80,000 miles on it. I recently had to replace my alternator, wasn't easy but did that successfully. Got an oil change, new K&N air filter, did a transmission flush ( prowlers method, changed from mercon atf or presummably whatever was in there before i bought the car to mercon V-the only thing the ford dealership recommends and has) and car was running good except for a few things i've noticed within the last two weeks.
One - there was one or two times when i had to come a sudden stop ( I live in the city ) and afterwards my car stalled out. Also a few times it didn't stall out but as i would put pressure on the gas, after a sudden stop ( in drive ) it would rem up as if it were in neutral and after rems came down it would "catch" and drive fine.
Two - If i shift into neutral and stroll to a light and stop then put my car back into drive, the car usually stalls out unless i have my momentum to keep me going forward.
Three - Car is now idling very rough (back and forth feeling). The engine looks as if it is literally moving backwards and forwards struggling to keep steady or get airflow to it. The check engine light just turned on and soon afterwards I turned the ac off and on again and it sounds like it's running but no air is coming directly out of the vents ( except toward drivers pedals). When I accelerate the car drives fine, doesn't seem to have a problem shifting or anything at high speeds, only when idling.
I live in the desert and drive my car as a runner and it's very hot in the summertime so I usually keep my ac on pretty high. Also my MPGs has been suffering lately, only getting about 250 miles per fill up when usually i get 260 to 300 depending on how much driving in traffic/highway and how much I run the ac.
I'm not the most knowledgable on cars but I'm working on that. I wonder if the problem is airflow related? Please help with any info possible. Thanks