 Gauges gone haywire! |
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| BfloRandy |
 Sep 20 2014, 12:48 PM
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#1
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Dimwit Extraordinaire  Group: Members Posts: 66 Joined: 20-September 14 From: Buffalo, NY Member No.: 17,927 Region Association: North East States  |
Hello everyone, I have enjoyed reading many of your posts this summer. I finally got myself stuck, so here is my issue, hope someone can help!
I have a 75 2.0L. I'm getting the "G" light (alternator?) on and the gas gauge and tach are going screwy. Sometimes, they work normally, and the light is off, others, the gauges fall to zero and the light is on, others still, the light will be on but dim and the gauges sorta work, for example I know I'm over 3k RPM, but the tach is showing 1400. When I even touch the brakes, the G light comes on and the gauges die, returning sometimes when I let off the pedal. From what I have been able to find, this sounds to me like an intermittent ground perhaps. I have also seen that it could be an issue with either the voltage regulator or the alternator itself. This issue just came out of nowhere today, it has not been a gradual onset thing. Am I correct in assuming that it has to be a sudden catastrophic failure in the reg or alt or even something as simple as a ground wire just popped loose? The car runs just fine. The speedometer works normally. Any help or ideas would be immensely appreciated! |
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| HarveyH |
Sep 20 2014, 12:56 PM
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#2
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Member Group: Members Posts: 450 Joined: 19-June 03 From: Downingtown, PA Member No.: 843 |
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| TheCabinetmaker |
Sep 20 2014, 01:16 PM
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#3
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I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Check your fuses. Take them out and clean(or replace) fuses and sockets.
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| BfloRandy |
Sep 20 2014, 01:42 PM
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#4
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Dimwit Extraordinaire Group: Members Posts: 66 Joined: 20-September 14 From: Buffalo, NY Member No.: 17,927 Region Association: North East States |
QUOTE(HarveyH @ Sep 20 2014, 02:56 PM)  Thanks, Harvey! That thread definitely helped! The master ground next to the fuse box was fine, I did pull it off, scrape it off a bit and replace it anyway while I was there. The number 8 fuse appears to be the culprit. The turn signal indicator light (and the blinker itself) doesn't like to go on properly, and that seemed to be the cause of the trouble when I tried it. It blew the 16A fuse, but not a 25A. The blinkers work fine for left turns, but not right. Is there a contact issue? I've recently done work on the horn and lock cylinder, so... |
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| TheCabinetmaker |
Sep 20 2014, 05:38 PM
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#5
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I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Did you disturb the switch plate or wires in the column? Sounds like you might have pinched a wire. Don't tighten those 4 screws too tight. Just snug enough to not back out
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