Start and rough idle at start up

Here is the deal.
1. I am in Mexico and the shops here are TERRIBLE.

I have a 2001 Chrysler Voyager. It has the 3.3 V6.
For the last 2 months, EVERY morning after start up, it spits and sputters, wanting to stall. I put it in reverse and sometimes it will stall.

I then start it back up with and get moving (about 20feet or so) and it runs like a champ. All day it runs like a champ. Every once in a while, on slowing down or going over the huge mexican speed bumps, it will act like it is not getting gas.

I took it to a mechanic and he cleaned the air intake area, to no avail. Still does the same thing, EVERY single morning. Here, my only choice is to throw money at it and hope it get fixed. I really don't want to keep doing that anymore.

Just put new plugs and wires on it not 4 months back. Really odd, as it is mostly just at start up in morning. It is NOT cold here. Generally 78-100 degrees here, daily. Coldest mornings are 65. Now it is around 75 in the mornings and still does it at start up.

PLEASE HELP!