Aircon won't work have 3lights on dash but internal fan does not move replaced fan motor still not working

Engine would not start last week. Towed to Nissan dealer. They replaced the camshaft sensor. I had already replaced it myself twice during the last week. C$360. That’s a lot to me. Now the check engin… 

Can’t get the the car warm in winter. Air con and fan all work great ; just can’t get any heat to the interior

I loose radiator fliud from rad every week. But cant find out where. Its not coming out the tail pipe or showing on the ground. Took it to 2 dealerships and 1 mechanic no one knows whats going on

Started kangaroo jumping and engine shit down. Started again and as soon as pushed on throttle engine died. Since replaced sensors amd throttle control, idles but revs are up and down and when push on…