no power at all! help!

[Rootie524]

ok so this has happened a few times..i would go to start my car..and nothing would happen..then i'd try again and it would work but my clock would be reset. and sometimes it would start but my clock would still randomly be reset. and today i go to start it and nothing happens like it has before and then i heard like a crack/pop sound for the engine and from that point on i have absolutely no power on anything anywhere..none. zippo. the battery is fine and im getting 12v to the fuse box. all the obvious fuses are checked and are fine. i just had a dyno tune so i thought my PCM might for some reason be fried..put in another one i had and still nothing at all.

i got looking at the wiring schematics for my engine and there is something called a fuseable link by the starter. would that being faulty cause the problems im seeing. what are other possibilities. its not like it just happened either..there were signs leading up to a problem. and before my fuel pump/injector 15A fuse randomly blew..so is it all linked together by a simple fix or do i have a serious electrical issue?

[robertisaar]

a fuseible link is essentially a fuse that's a PITA to replace... but if that went, you wouldn't have power to your starter, that's it... the fact that you lost everything suggests another electrical issue...

what model/year BTW?

[pocket-rocket]

Well, it sounds like for sure an intermittent connection since your clock lost time. I would look at your cables closely and check for corrosion getting into the jackets, the connection between the cables and the battery and like Robert mentioned, fusible links. If you can pull on both ends of a link and it has any give, it's bad. You could also probe the jacket on the wire (more accurate than pulling on the ends of the link). I wonder how your ignition switch is.

[primesuspect]

check the fuse cluster under the hood on the drivers side (depending on make andmodel as you have not posted a reply to robertisaar) I know that the terminal at the auxiliary positive terminal for boosting the car can crack very easily. it is a little plastic flange and it is broken on damn near every one i have seen , from people roughly connectin jumper cables to it. look for slight fractures in it. my regal used to act like it was haunted with many intermittent electrical issues all due to this bad connection.

just a thought, good luck

[86FieroSEv6]

The starter batt terminal fusible link could very well be the issue. Your occasional problems were most likely caused by momentary opens. Or, if the cable stays/insulators are not in place, vibration can cause rub through shorts. Being too close to the exhaust manifold or header could have caused it to melt the insulation and short out. In any case, a closer inspection is definitely in order.