1991 Buick Regal Low Voltage

Hi,
When I switch on the ignition but before I start the car, I've got 14
Volts. The car starts normally. As I drive, however, some odd things
are happening. When at idle, steady cruise and during decelleration, I
get 14 volts. When I accellerate, it drops to about 8 Volts, the
headlights dim and the turn signals stop flashing and remain steady.
This is the opposite of what I'd normally expect. What's going on?
Thanks!

Belt slipping?
"T6" > wrote in message
oups.com...
> Hi,
> When I switch on the ignition but before I start the car, I've got 14
> Volts. The car starts normally. As I drive, however, some odd things
> are happening. When at idle, steady cruise and during decelleration, I
> get 14 volts. When I accellerate, it drops to about 8 Volts, the
> headlights dim and the turn signals stop flashing and remain steady.
> This is the opposite of what I'd normally expect. What's going on?
> Thanks!
>
>



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"Shep" > wrote in message
...
> Belt slipping?
> "T6" > wrote in message
> oups.com...
>> Hi,
>> When I switch on the ignition but before I start the car, I've got 14
>> Volts. The car starts normally. As I drive, however, some odd things
>> are happening. When at idle, steady cruise and during decelleration, I
>> get 14 volts. When I accellerate, it drops to about 8 Volts, the
>> headlights dim and the turn signals stop flashing and remain steady.
>> This is the opposite of what I'd normally expect. What's going on?
>> Thanks!
>>
>>

I think its a fried diode bridge in the alternator.
The biggest clue for me is the radio interference post the OP has also
posted about with the same car.
You will hear a bad diode through the radio, and it is not uncomon to have
this problem, esspecially with that era GM alternator.


--
Alan Gallacher
Born to Tinker!
>
>
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Thanks, guys.
I'll try a new alternator.