If you are not familliar with the system, do not touch it. It is a ver intricate and confusing system. If I get a customer that has tried to fix it, and of corase cant, I send them to the dealer. Let them have deal with it. Trust me, you will loose your butt if you take this on. Not only will you have to put the motore in, but you will have to adjust everything. Hahah thats a lot of fun