COULD BE THE battery or alternator IF THE alternator IS BAD THEN THAT WILL LET THE battery DIE OR THE STarTER CAN JUST BE MISSED UP. with WHAT HAPPEN TO ME I SWAPPED A D16Y7 IN TO MY CR-X hf WITH A NEW STARTER AND IT JUSTED CLICKED WHEN TRYING TO CRANK IT so I GOT A NEW ONE AND THAT WAZ THE FIX'S ......... :beer: