TECH: Electrical shite

[roccit_53 at hotmail.com (C Boyko)]

Okay, this is on a *very air conditioned* 8V A1...but it likely is the same 
for them all.


Anyways, three questions
1. I just relocated/ wrapped the "previously insulated and now cooked on the 
exhaust manifold" wiring for the O2 sensor. How screwed is it? ( Still 
didn't get the E-test done, that will likely answer that question) It had 
one wire bare, the other two seem fine. My bad, I knew it needed a cable 
tie. I will probably take it for a hot run and check its output later...

2. Alternator readings: Beginning in the engine bay to figure out why there 
have been battery lights/ low voltmeter readings, I discovered that at rest, 
across the terminals it reads 12.4V or so ( a bit low) and at the suggested 
3000 rpm, it's within spec, at 13.64V ( spec is 13.5-14.5, so again on the 
low side.)

What I don't know is if it should dip below 13.5V with accessories turned 
on/ 3000 rpm. I can get it below 12V with high beams and a fan on, and this 
is what concerns me. Bentley says it may drop if the alternator's bad, but 
Bentley almost reads as though it's bad if the intitial reading was below 
13.5. I did clean up the "positive terminal back to alternator" wires, (and 
they looked fine anyway, it made no difference) I haven't felt ambitious 
enough to clean the negative side, but may well head there after a cup of 
coffee.

3. Stereo shit. I keep telling my daughter I'd like to get the charging 
thing sorted first, but the stereo keeps cutting out when the volume gets 
turned up. We've checked resistance to the four speakers,( they matched up 
fine) and hooked up a fused power wire direct from the positive battery 
terminal, but it's still doing the same thing.

Any input is appreciated.
Cathy

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