Welcome to the Corvette Forums at the Corvette Action Center!

1986 C4 Digital Dash Problem

clberger

Member
Joined
Aug 18, 2013
Messages
5
Location
Woodstock, NY
Corvette
1986 Roadster
Hello, so here is the problem. All of a sudden my entire digital dash goes off & on. When it comes back on it is resetting and all stored data is lost. It can stay off for as little as a couple seconds up to an hour.

I noticed that when it comes back on the Volt gauge has a red warning light and is reading between 16 to 18 volts. Silly me, I think its the voltage regulator so I run out and replace the alternator. Needless to say, that didn't work. After that I have the brainstorm that maybe I should check the voltage at the battery. The volt guage is showing 18 volts but when I put a meter on the battery, it is showing the normal 13 volts (yes, I had the car running).

So, if anybody has any idea's, I'd be glad to listen.

Thanks, Craig
 

Mac

Well-known member
Administrator
Joined
Feb 13, 2003
Messages
5,478
Location
Ottawa, Canuckistan
Corvette
1973 coupe L82 (gone as casualty of divorce)
The first thing that pops to my mind (non-C4 owner) is ground straps... With a slopped connection, you will get strong voltage on the supply side but intermittent issues like you describe.

Mac
 

Rob

Site Administrator
Staff member
Administrator
Joined
Sep 16, 2000
Messages
13,591
Location
New Hampshire
Corvette
1990 Corvette ZR-1
Moving from the New Member Introductions forum to the C4 Tech forum....
 

djsroknrol

Well-known member
Joined
Oct 12, 2010
Messages
247
Location
Lake Havasu City, Arizona
Corvette
1984 L83/MD8 red coupe
The first thing that pops to my mind (non-C4 owner) is ground straps... With a slopped connection, you will get strong voltage on the supply side but intermittent issues like you describe.

Mac

Welcome to CAC :beer

Just what Mac said...especially G101 which is on the passengers kick panel side :thumb
 

clberger

Member
Joined
Aug 18, 2013
Messages
5
Location
Woodstock, NY
Corvette
1986 Roadster
The first thing that pops to my mind (non-C4 owner) is ground straps... With a slopped connection, you will get strong voltage on the supply side but intermittent issues like you describe.


Thanks, I will take a look and see what I can find. Craig
 

Ken Anderson

Well-known member
Joined
Jul 1, 2003
Messages
377
Location
atlanta
Corvette
67 & 03
Cluster

Don't waste your time on chasing grounds & other stuff. Your cluster needs repair & has one or more bad IC's. The voltage is the clue.
 

clberger

Member
Joined
Aug 18, 2013
Messages
5
Location
Woodstock, NY
Corvette
1986 Roadster
Don't waste your time on chasing grounds & other stuff. Your cluster needs repair & has one or more bad IC's. The voltage is the clue.

Thanks Ken, I sort of was thinking that but I didn't want to come to the realization of what it was going to cost!
Craig
 

Corvette Forums

Not a member of the Corvette Action Center?  Join now!  It's free!

Help support the Corvette Action Center!

Win Both Corvettes!

Win Both Corvettes and Get Extra Bonus Tickets Now!

Supporting Vendors

Dealers:

MacMulkin Chevrolet - The Second Largest Corvette Dealer in the Country!

Parts/Accessories:

Dead Center Foundation

Vetteskins

Advertise with the Corvette Action Center!

Partners

Top Bottom