hitmanpty

About 3 momth ago i get my self a good used lcd dash from ebay.

i did install the dash. and work very good.

after that i start working on my driver side cylinder head. and valve.

when i finish the job 3 week later my dash start working bad.

the dahs stays on all the lcd are light up and stays like that into I turn of the key on the ingnition.

what can it be. it was working ok before

fredd1

I'm not sure I follow your question but all the indicators light up and display their maximums when you turn on the ignition. This is the normal start-up sequence/test. When the engine starts the gauges settle down to values based on the sensors they monitor (RPM, MPH, temperatures, pressures, etc.). Is this the behavior you are seeing?

ghlkal

I don't quite understand the problem either, but there is a ground wire under the driver's side cylinder head near the firewall.

I'd check that ground lead.

hitmanpty

the lcd stay light up all the time with the swich on. but gauges do not move. I will take a pict sure to ilustrad

also regarding the ground wire on the motor. there is nothing there. and i think it never had been. i can feel the hole where the screw suposed to go but that it

hitmanpty

here are some pictures of my dash. with the motor running. the dash is frozen. also notes the areas where there is no led. i know for sure all the marks are working. because if I turn of the car and start again. tha area will led again, and some other area will be off.

you can see what I mean by comparing all the photos of the fuel indicator

In this photo all the fuel indicator led are on
[IMG][/IMG]

this next one is dificult to see but I have some led off on the fuel indicator
[IMG][/IMG]

[IMG][/IMG]

[IMG][/IMG]

hitmanpty

by the way i remove my carbon fiber vinil. and decided to polish the plastic. in a eford to restore the dash.

Cliff Harris

The sections of the LCD that are out are caused by a bad connection between the PC board and the LCD. There are several pink rubber type conductors that connect them together. Here is some information about repairing the dash:

http://www.batee.com/corvette/dcrg/r...tor/repair.htm

This thread shows the pink blocks:

http://forums.corvetteforum.com/c4-t...digi-dash.html

fredd1

You might also check out this youtube video:

hitmanpty

I know about the pink rubber type. I asembly the dash totaly my self.
since when i got the dash from ebay the case dont fit my year model. i had to trasplant all the electronic to my old dash case.

I dont think the pink rubber type is the issue here. since every time I turn the car on and off a diferent section light up and other turn off.

like i say before take a look of the fuel indicator. in one photo everything is ok the other I have some parts off.

jhammons01

That vid has 'some' good info but is lacking.....he had a great chance to explain more...

hitmanpty

I like to say when i first install the dash. it work beautiful. but now is like in the pictures. some part light up but dont even move

please advice

jhammons01

Your issue is that you knocked off the ground from the heads when you did your injectors. The fact that you cannot find the ground and only a hole is the issue. The ground is a braided flat wire......

hitmanpty

I keep looking for the grond wire.

but now something come up I dont want to say but I think the rear main seal is gone. My car is leaking all the motor oil

the think is. in order to change the 10 dollar seal i will have to remove the trasmision. and tha is a jog I can not do. I just dont have the equement

ghlkal

Ouch I feel your pain


I'm still leaning toward the missing ground wire as a source of your digital dash problem ...