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Re: 69 Chevy Woes
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CarGuru > Technology > Re: 69 Chevy Woes 14 February 2005 17:30:05

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Re: 69 Chevy Woes

James C. Reeves 13 February 2005 04:38:35
 
I have none...but do have fond memories of the 1968 Chevy Impala Custom > Coupe I learned to drive on! Good luck with your question. I x-posed > over to the GM NG to broaden the audience.>

Oops, I mean 1969 Chevy Custom Coupe. The grandmother had a 1968
Biscayne..learned to drive that too (no power brakes or steering on that
puppy though!)


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Gfulton 13 February 2005 07:07:33 permanent link ]
 
"Comboverfish" <comboverfish@yahoo­.com> wrote in message
news:1108258679.516­618.279720@c13g2000c­wb.googlegroups.com.­..>
Ralph D. wrote:> > In-law has a 69 Impala w/327. He has two problems that he thinks are> > unrelated, but can't explain either. I think they are related... but> can't> > explain it nonetheless.> >
Issue 1:> >
This thing started blowing condensers at odd times (meaning no> pattern).> > Might take a day... might take a week... but sooner or later it will> blow> > the condenser. These are new, not used and the car runs and performs> rather> > well otherwise. They just up and quit.> >
Issue 2:> >
5 minutes after parking, the alternator light comes on. The> alternator light> > does not come on while operating nor upon turning off the ignition...> only> > about 5 minutes later. It does come on when the key is turned to on> before> > cranking, so it appears to function correctly. The Kicker... every> now and> > again this thing drains it's battery, but when testing has no spark> when> > striking a cable to terminal suggesting no grounded short.> >
Here's what I think... but what the hell do I know:> >
I think that when the engine is shut down with the points closed it> is> > letting the battery back-feed through the condenser somehow. I have> > absolutely nothing to support that theory except for a guess, and> have not a> > clue as to how I would suggest he go about pursuing that theory. And> forget> > anyone over there taking anything to a garage as they'd feel like> someone> > castrated the family jewels at the mere suggestion that among them> they> > can't fix every problem with every auto.> >
Anyhow... They are going to drop a HEI distributor in it and deal> with the> > light separately, but I'm guessing they'll end up popping modules> next. He> > says he has another alternator around, but I'm wondering if there> isn't> > something external to it involved.> >
Suggestions?


Had the old '64 Impala family car given to me after I got out of the
service. 327 engine. Seems like I remember there was a large resistor to
drop voltage to the coil and wired to the "run" position of the ignition
switch. It was bypassed during start due the lower voltage applied to the
coil from the battery voltage being pulled down by the starter. Most cars
had this system in those days. Sometimes it was just a length of resistance
wire. You might check if someone had that resistor burn out on them and
just bypassed it with wire. That would keep the voltage at the coil too
high during run, causing it to pull excessive current, which would result in
a higher current also at the condensor. As far as the alternator light, my
only thought is a bad alternator with an internal short. Can you get
another one somewhere from a friend to put on there and troubleshoot it?
Hope this helps. Sure like to see the old Chevys on the road.

Garrett Fulton



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Add comment
Terry Mosley 14 February 2005 17:30:05 permanent link ]
 My 2 Cents......

Issue 1:

Check the wires leading to the coil. One terminal should have two wires, the
other goes directly to the points.
The one with two wires: one is a resistor wire and will have 12v in the run
position of the ignition switch, (the other wire is 12v from the start
position).
The resistor wire drops the amperage going to the points to prolong their
life. If the wire breaks down, too much amperage might be getting thru
frying your points( Chrysler used a ballast resistor on the firewall).

Issue 2:
If you have the external regulator/reverse current relay, replace it. My '69
Nova had the same problem if my memory serves me...

Good Luck!

T.


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CarGuru > Technology > Re: 69 Chevy Woes 14 February 2005 17:30:05

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