AC compressor not staying on

Once I tighten the positive cable car cranked but remember speedometer, oil, temp gauges flicking on and off

BLS 2007, the switch does not open the door, the remote does not work, I open it with the key, I put the key in the key and turn it, the sound of the fuel pump, the injector comes, the light behind th… 

Misses when idleing but other than thst runs well. Maybe the injectors or spark plugs? It also smells bad when its running like the catilyic convertors are plugged but all the time should i cut them o… 

The button is use to pop the trunk stopped working and i now have to pull down the middle of the back seat and pull the cord to get the trunk to pop.