I suspect you mean that it's not cooling at all. If it's running for several minutes and then shuts off, the thermostat (# 216787700) will probably be the problem. In this case, set it to a colder temperature. If itâ€™s already at the coldest setting, the thermostat will need to be replaced.
If it only runs for a few seconds or less, the problem will be with the compressor or the start kit on the compressor. A technician will have a kit that can determine which component has failed. Without this kit, you can take a chance and replace the start kit (# 216649305 and # 218909911). If the compressor still won't run or runs and quits, the compressor will need to be replaced. If you would like to have a technician check it, I'm listing a site you can access, to have a tech come out. Here is a link for the website:
Sears Home Services