Hi jist recently baugut our van from a local auto parts store was the old depivery van but anyway it has 250,000 miles and we were recently haveing problems with the heat not working and the engine temp would go way up but then go bk down would not have ne heat but just the other day the heat started working again with no more over heating problems but then this morning my girlfriend was driving to work and called and told me that she saw a light come on thinking it could either be the engine light or tranny light but the van waw driving just fine no spudering or stalling driving as if it were still a brand new van.