DASHBOARD LIGHTS FLICKER

[PAULIE B]

HEY GUYS! ON MY 87 VETTE...SOMETIMES THE DASHBOARD LIGHTS FLICKER AND WHEN I HAD THE TOP OFF THE DASHBOARD LIGHTS DID NOT BRIGHTEN AFTER DRIVING FOR THE DAY. BUT WHEN I TURN THE CAR OFF AND STARTED IT AGAIN IT CAME BACK ON. ALSO, WHEN AT IDLE (AT A LITE ONLY WHEN IN DRIVE) IT RUNS A LITTLE ROUGH RPMS GO FROM 6 TO 8 FLUCTUATING IS THIS NORMAL? A LITTLE CONCERNED LET ME KNOW! THANKS GUYS ALL THE BEST!;help

PAUL

 

[onedef92]

What shape is your battery in? Also, make sure you are not getting into an overcharge situation, use a volt meter and check the charge voltage - 13.8 to 14, if you are getting over 15 volts the alternator/regulator is bad.

Also, an old battery that constantly has the alternator under load may cause pulsating.

 

[joesroad]

Check all your grounds, thats what was causing issues with my 88 coupe.

 

[tonybabb]

HEY GUYS! ON MY 87 VETTE...SOMETIMES THE DASHBOARD LIGHTS FLICKER AND WHEN I HAD THE TOP OFF THE DASHBOARD LIGHTS DID NOT BRIGHTEN AFTER DRIVING FOR THE DAY. BUT WHEN I TURN THE CAR OFF AND STARTED IT AGAIN IT CAME BACK ON. ALSO, WHEN AT IDLE (AT A LITE ONLY WHEN IN DRIVE) IT RUNS A LITTLE ROUGH RPMS GO FROM 6 TO 8 FLUCTUATING IS THIS NORMAL? A LITTLE CONCERNED LET ME KNOW! THANKS GUYS ALL THE BEST!;help

PAUL

I had a similar problem on my 89 coupe. Turned out that the earth cable to the battery had come loose at the battery - a really easy fix.

 

[PAULIE B]

NOW I AM HAVING A PROBLEM WITH THE DASHBOARD LIGHTS...THEY ARE ALL OUT! I TRIED TO FIND THE GROUND BEHIND THE ENGINE LH SIDE BY VALVE COVER BUT TELL YOU THE TRUTH I HAVE NO IDEA WHAT TO LOOK FOR! I WAS JUST PLAYING WITH IT AND THEY CAME ON. I DON'T KNOW HOW LONG THEY WILL STAY ON. CAN ANYBODY ELABORATE ON THE GROUNDS AND WHERE ARE THEY? HELP!

 

[So Bay Vetter]

Just a shot in the dark but, are you having tail light trouble? A bad tail light will cause the dash lights to go out. Weird huh? Learned that from someone here. Replaced tail lights and solved the problem.