1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

All warning lights are on..help

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Old 12-14-05, 05:10 PM
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All warning lights are on..help

Hi all
few days ago I got 83 GSL. I put a new battery and a new Alternator.
Yesterday I was driving and the all my warning lights are on except the safty belt, like a cristmas tree!!
The car starts and run fine so far, checked groun connection but found nothing wrong.
If I disconnect the "T" connector to my Alt, the lights are off.

thanks for any help
Old 12-14-05, 05:27 PM
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Blew my 3rd one 12/8/08

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was it a brand new alternator? if all lights are on then you either broke the belt or the alternator is bad..
Old 12-14-05, 10:59 PM
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would the lights come on it the belt was slipping or too low of an idle?
Old 12-14-05, 11:16 PM
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The belt is fine, but now she just died on me when i was driving to the repair shop, the battery is just empty, trying to start the car, no lights, can close windows ..nothing. I jump start the car and it just died again.
To mee it looks like a bad alternator...
Old 12-14-05, 11:24 PM
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Your alternator isn't working... be thankful you don't have an SA. When I broke a belt on my old '79, all the warning lights came on and the tachometer wound around to 5k rpm (voltmeter). Damn near shat myself
Old 12-15-05, 02:22 AM
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5krpm: thats cause mazda used the tach as a voltmeter when the motor wasnt spinning very fast..

what a stupid system.. just PUT a voltmeter on the dash, mazda!
they made such a good choice to place the tach right in the middle, and then put it BACK in the middle for the FC's and FE's, i dunno about an FD but i would assume so.
Old 12-15-05, 04:26 PM
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Alternator. or the belt.
Old 12-15-05, 05:35 PM
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Originally Posted by Jon_Valjean
Your alternator isn't working... be thankful you don't have an SA. When I broke a belt on my old '79, all the warning lights came on and the tachometer wound around to 5k rpm (voltmeter). Damn near shat myself
same thing happened to me about 2 months ago. I saw everything go red, the tach go to 5k (when i was actually at like 1k), and then a big lump in my throat started to form. "damn piece of crap- i hate you!" i thought to myself. But how could you stay mad at an SA? it's the best
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