Its your catlyic converter(s). Change them, or cut them out and put straight pipe if u don't have emissions and are on a tight budget. There part of the exhaust system under the car. When they get clogged, which they do, they cut off the exhaust flow, thus chokes the vehicle out because air can't come in if it can't get out. And combustion can't take place without air, fuel and spark. Could be other things too, but given the temperature varible that sounds like what it is.
Saturday, May 19th, 2012 AT 10:18 PM