Idiot volt light coming on

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Old 10-28-2005, 10:21 AM
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Default Idiot volt light coming on

When i bought the car i needed to replace the altanator witch was about 3 months ago. Since then i have had to replace the belt. So i have a new belt and altanator but for some reason it is not charging and starting to really irratate me. My car is a 5000s quatro 1987 with lots of miles on it. It may be the wiring, i am hoping not, but i intend to bring to autozone to get it tested soon.

Any ideas would help
thank you
Old 10-28-2005, 11:39 AM
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Default on the 87 5000 cs >

<center><img src="http://pictureposter.audiworld.com/62578/short_shifter.jpg"></center><p>
there is a way of checking out the voltage when you are driving or the car is parked.

&gt; turn ignition on
&gt; turn off electronic climate control / display
&gt; now push the top right button and the bottom left button / together.
&gt; there are two buttoms above that Hot red and cold blue
&gt; push the top button ( I think it is the hot button ) until you see the number 11
&gt; now push the button below that and it should give you a reading.

if you get a reading of 13.5 ish the alternator is good

&gt; now check the battery if you get 12.5 volts with the engine of ( ign on ) that mean it might be okay , I would take the battery in and get a LOAD test done on it.

this is a good place to start ...d ( picture stolen from Adam M ;
Old 10-28-2005, 12:09 PM
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Default

The belt may not be tight enough. check tension
Old 10-28-2005, 12:17 PM
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Default Re: The belt may not be tight enough. check tension

i have checked tension and it is very tight
Old 10-28-2005, 01:15 PM
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Default Re: on the 87 5000 cs >

tried your trick didnt work maybe i was doing it wrong but i went to autozone and they said it might be the regulator which makes sense because it stops charging after a certain time on the road.
Old 10-28-2005, 02:54 PM
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Default Rebuilder's aren't infalable...

They are also hostage to the quality of parts supplied.

Have a look at postings by Will Ng. He has a link to a manual that will show you how to use the climate control diagnostic functions.
Old 10-29-2005, 06:48 AM
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Default Re: Idiot volt light coming on

Bad new alternator, bad wiring, loose/wrong belt, bad splice, etc...

Steve
Michigan
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