Blown engine having to due with bad electrical

[IchigoMae]

I resently read some of the posts having to due with bad electricals, like the alternator, battery and bad grounds. I am sure that there is a link between that and having my engine blow. Well is a bad electrical responsible for my engine blowing? My car showed similar problems like dyieng idle when you hit the clutch, diming lights, dying idle at stops, etc during the night when my engine blew. im thinking that the bad electrical either screws up the ignition timing, lowers fuel pump voltage, or lowers fuel injector output which inturn causes the engine to lean excessively and overheat. What do you guys think. :confused:

[Maeda]

its would have to be pretty severe, but I would imagine it could cut your fuel pump and them boom...

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I gotta fix my sucky idle b4 i boost now that you mention it...

[FastBack 240]

With my 92 the idle is very rough and fluctuates. If I turn the defroster on for the windshield then it dosnt fluctuate. Also I have noticed that the interior lights dim when I open the door and the seat belt move on the track. Anyone know what could be causing this? Could it be a clogged injector or bad ground or do I need a bigger battery? Any imput will help. Thanks to all.