89comanchesleeper Posted April 14, 2010 Share Posted April 14, 2010 my 89 mjs batt gauge stays close to 14 volts while its runnin. lights on ect. but when i turn on the a/c it drops pretty low. close to 9 volts. thats a big drop for just a a/c clutch to kick in. i can turn just the hearter on and it stays the same. any ideas? :dunno: Link to comment Share on other sites More sharing options...
jpdocdave Posted April 14, 2010 Share Posted April 14, 2010 verify the voltage with a multi meter on the battery, my voltmeter in the cluster drops around 12 sometimes, but the alternator is charging fine when you install real test equipment on it. the gauge cluster can be erroneous Link to comment Share on other sites More sharing options...
89comanchesleeper Posted April 14, 2010 Author Share Posted April 14, 2010 will do. thanks man. :cheers: Link to comment Share on other sites More sharing options...
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