Ok here's the story. I had a coolant leak on the tube that connects the pump to the t-stat on my b18a1 crx. I got that fixed and also changed out my intake gasket due to a small leak on it. Yeasterday all was good and ran great. Well I leave for work today and as I accelerate my headlights go on and off as do all the lights inside and the car starts to stumble with no power. But anything over 3500rpm it does fine. What could cause this is my question? Thanks.