I own a 1999 honda prelude.I have various aftermarket parts and have gone through 2 head jobs. The second time I had the 5 valves, replaced all retainers and springs with aftermarket parts. After I got it back the car idled low(around 700-500 rpm) and as if the car was going to die. After driving it, the car would also die after coming to a stop, so I have to start the car and it will idle low again. Soon, 4 months later, I was driving it and the power steering belt flew off, then a few seconds later the car died, I tried starting it but it wont start and would just turn over but not start, the battery was good, checked and tested the starter and it was good, checked the fuses, looked at the spark plugs and wires, and still could not find the problem.