Hi..this is my 1st post, I'm having intermittent trouble starting my 1998 spider Tspark... the key light comes on but goes off straight away,(not stay on which I know is the usual problem), the engine turns over but nothing.. although if I use a battery booster it usually over comes problem. I charged battery and worked well for a week untill I cleaned car with radio on. Then problem recurred..I've had battery and alternator checked both ok. I'm convinced its the battery altho it does'nt seem logical.. Help!!!!