Volvo Electrical

[Wiseman]

How old is your starter ? Are you sure cables are tight in cable shoes ? I found out mine were looking fine , in reality they were so oxidized and rotten inside , I have to cut them out and install new ones ,and I solder them the right way . Not crimped!!! Alternator cable goes to starter and than via the big one to batteries . There's the culprit for your problem . At least that was mine . Same description , same symptoms . I'm talking about the big cables attached to starter solenoid. If you twist and pull hard enough you'll see what I'm talking about . Don't forget to disconnect batteries before whatever you do !!!