C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

84 digital dash problems

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Old May 17, 2007 | 11:31 AM
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Default 84 digital dash problems

went to go leave a parking lot today and when i turned on my car my digital dash wasnt working right. When i first turn it on all the lights come on and then sometimes either they all turn off or they start just lighting up in random orders... i got home and turned my car off for a second and disconnected the batttery and then reconnected it hopeing that would fix the problem and when i turned the key so just the dash came on it worked for a second and then started messing up again... i tried to disconnect the battery again but this time it didnt even work for a second.. any suggestions on what might be wrong??
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Old May 17, 2007 | 01:11 PM
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Many times these issues are due to bad grounds, although there may be other reasons too. Here's a couple links to some dash repair info which should be helpful.

http://www.batee.com/corvette/dcrg/index.shtml

http://www.corvettemagazine.com/1999...ash/dashp1.asp

Good Luck!

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Old May 17, 2007 | 02:44 PM
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Also bad solder joints on the PCB.
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Old May 17, 2007 | 03:02 PM
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imm not sure if this will help or not but i also took it out later today for a drive and it was working fine... then on the way back it would turn off.. then restart kind of like it does when you first turn on your car...
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Old May 17, 2007 | 03:07 PM
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On my '88, the bulbs were actually loose inside of the base that holds the glass part of the bulb. I could actually tap the panel and the lights would flicker or turn back. I was lucky and only had to replace the bulbs.
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Old May 17, 2007 | 03:30 PM
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Originally Posted by fsufan79
imm not sure if this will help or not but i also took it out later today for a drive and it was working fine... then on the way back it would turn off.. then restart kind of like it does when you first turn on your car...
Based upon that then it may very well be a simple bad ground or bad/cold/loose/intermittant solder connection on the pcb. The first link I indicated above has a list of symptoms and how to go about troubleshooting/fixing them. I don't think your going to get more complete info elsewhere so check it out. It's likely the solution to your challenge is there.

Good Luck Again.


Last edited by ACECO; May 17, 2007 at 03:32 PM.
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