My 2011 transit connect will not start after sitting. It cranks but no start. This is sporadic. Most times is ok. When it has happened in the past I can jump start it, despite a new battery so pretty sure the issue is not the battery. Last time, it did not respond to the jump. I am a complete novice but any info I can pass on to the mechanic would be useful. I have had 3 different shops look and it starts fine. I’ve spent a bundle at the mercy or lack of from the mechanics. Please advise. Trudy