misfire codes, and a maint. OVERHAUL

took it to a very trusted mechanic ive used for over 10 yrs...he checked to see if he could change the timing...and said i need to take it to the dealership and have it put on a computer to have it timed corrctly- than it has no timing marks for him to go by....he also said i need a fuel filter that the one i had is ancient, that i need a new pvc valve cuz the current one isnt sucking/regulating air correctly...and we both heard a hiss like a vacuum leak....sprayed it down w carb cleaner several several times and didnt find one. however, theres a line thats running from my cruise control to NOTHING and its hanging in mid air looks like itd been cut. its steadily sucking air so i sealed it for now. im taking it to the dealer thursday- any ideas about ost or diagnosis? i need to know what im walking into cuz i need this vehicle tip top for my job... MORE INFO: it likes to stall out when i touch the brake, when i intitially switch gears, when im not pushing down on the gas. the MEL flashes when pushing gas pedal the goes back to solid without flashing when i let off. the damn thing shakes so bad sometimes i wonder if its gonna get shot and then im out my new car and the money i bought it for. im pretty sure it needs rear differential fluid as well. plz give any info u can im female and dont want to spend a ton at the dealership. im no fool but aslo new to automotive. i have the book on it from autozone, the manual and the service manual downloaded on my laptop. ive read on it over a week and cantpinpoint it. it looks like it has new wires. thanks guys i hope its not too much trouble and that u have any advice that could help.

it said all 4 cylinders were misfiring, as in it gave 4 codes, not one...but if that were anywhere near right the honda wouldnt run, would it? im thinking timing and some long overdue maintan. the heads were replaced, the plugs/wires replaced...im thinking its an1/8th inch out of timing, if i can even do it myself...some models have to be done at the dealership on a computer...i figured either the idleO2 sensor was screwed, or the timing is a bit off. although i worry about transmissions, because they are my curse. i bought the book at autozone and have read 85 pages so far...do u think it has to do w the antitheft? i want that crap off. im replacing power lock actuators in the am...figured id do what i can and start small...thanks, im almost 30 and this is the first car ive owned thats not as old as i am, so i want to take great care of it...

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