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

My dash

Thread Tools
 
Search this Thread
 
Old Aug 25, 2010 | 10:53 AM
  #1  
BOBBY_VW's Avatar
BOBBY_VW
Thread Starter
2nd Gear
 
Joined: Aug 2010
Posts: 2
Likes: 0
Default My dash

Please help I bought a 90 vette last weekend everything was great until this morning. I started the car and my dash went crazy all jumbled cant read speed or fuel. Is there some kind of rest for this?
Reply
Old Aug 25, 2010 | 11:06 AM
  #2  
rlf105's Avatar
rlf105
Advanced
 
Joined: Jan 2010
Posts: 90
Likes: 4
From: Henderson Nevada
Default

check the battery itself. I know chrysler products are very voltage sensitive and I wouldnt be suprised that GM could be too. Have the battery load tested. JUst a starting point bit I hope this helps
Reply
Old Aug 25, 2010 | 12:30 PM
  #3  
twin540's Avatar
twin540
Pro
10 Year Member
 
Joined: Feb 2007
Posts: 740
Likes: 2
From: San Antonio TX
Default

Sounds like you're display is going out. Only remedy is to get it service. This is a known problem with our with our displays. Tap on it see if it comes back on.
Reply
Old Aug 25, 2010 | 01:00 PM
  #4  
EasyEd's Avatar
EasyEd
Instructor
 
Joined: Aug 2010
Posts: 129
Likes: 0
Default

I wish I had an answer for you, cause mine is doing the same thing. See "Devils in the dash". Wife's '92 has issues, cause(s) unknown. I'll post what I find out. Let me know when you find the solution.
Reply
Old Aug 25, 2010 | 01:51 PM
  #5  
twin540's Avatar
twin540
Pro
10 Year Member
 
Joined: Feb 2007
Posts: 740
Likes: 2
From: San Antonio TX
Default

Do a search on this forum. You'll find links for repair shop it well involve dropping the steering column and sending it out to get it 0verhauled. That's basically the only permenant solution, temp solution take it apart clean the contacts and put it back together nice and snug.
Reply
Old Aug 25, 2010 | 02:13 PM
  #6  
jhammons01's Avatar
jhammons01
Le Mans Master
10 Year Member
 
Joined: May 2006
Posts: 9,226
Likes: 9
From: Irvine Ca
Default

Do a search on the forum and find that many have cured this problem when they discovered their coil going out......

Replaced the Coil and the Dash started to behave again
Reply
Old Aug 25, 2010 | 03:16 PM
  #7  
Bubba91's Avatar
Bubba91
Pro
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Dec 2004
Posts: 674
Likes: 1
From: Daytona Beach Florida
Default

Mine was doing the same thing a few years ago. The connection was loose where the LCD was plugged into the circuit board. I took it apart and plugged it back in. It's kinda hard to get it plugged in all the way cause the wires are so short and the plug is hard to get to. I used a screwdriver to hold the plug in place while connecting it. Hope this helps
I can take pics if you need me to. I have my spare apart now, in order to fix the tach.
Reply
Old Aug 25, 2010 | 04:20 PM
  #8  
EasyEd's Avatar
EasyEd
Instructor
 
Joined: Aug 2010
Posts: 129
Likes: 0
Default

Originally Posted by Bubba91
Mine was doing the same thing a few years ago. The connection was loose where the LCD was plugged into the circuit board. I took it apart and plugged it back in. It's kinda hard to get it plugged in all the way cause the wires are so short and the plug is hard to get to. I used a screwdriver to hold the plug in place while connecting it. Hope this helps
I can take pics if you need me to. I have my spare apart now, in order to fix the tach.
Pictures would be great. Diagrams in FSM are OK, but photos are always better for me. Can the plug be reached from under dash, cover and knee plate removed already. Looking for mouse chewing too. Thanks.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-1

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-2

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-3

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-4

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-5

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-6

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-7

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-8

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-9

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
Old Aug 26, 2010 | 12:50 AM
  #9  
twin540's Avatar
twin540
Pro
10 Year Member
 
Joined: Feb 2007
Posts: 740
Likes: 2
From: San Antonio TX
Default

Originally Posted by EasyEd
Pictures would be great. Diagrams in FSM are OK, but photos are always better for me. Can the plug be reached from under dash, cover and knee plate removed already. Looking for mouse chewing too. Thanks.
You have to pull the instrument cluster out. Not very hard to do.
Reply
Old Aug 26, 2010 | 09:27 AM
  #10  
Bubba91's Avatar
Bubba91
Pro
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Dec 2004
Posts: 674
Likes: 1
From: Daytona Beach Florida
Default

Originally Posted by EasyEd
Pictures would be great. Diagrams in FSM are OK, but photos are always better for me. Can the plug be reached from under dash, cover and knee plate removed already. Looking for mouse chewing too. Thanks.
I'm afraid you'll have to drop the steering wheel in order to get the cluster out (easier if you take the driver's seat out first).
1.Take out the cluster
2. Take it apart
3. Here is a pic of my spare cluster and the plug (for the LCD) that was loose causing the same problem that you described.

location of plug


The plug (female part)


LCD (male part)


How they go together


Just make sure they are plugged together really good. It's kind of hard to get them together. I used a screwdriver to hold the brown part (female) in place while pushing down on the LCD part (male)
Reply
Old Aug 26, 2010 | 12:26 PM
  #11  
EasyEd's Avatar
EasyEd
Instructor
 
Joined: Aug 2010
Posts: 129
Likes: 0
Default

Bubba91,
Thanks, great pictures. I can see exactly how it should go together. Sorry for stepping all over BobbyVW's post, but this may help him too. I'll try to get at the connector this week end and let you know how it comes out. Checking coil as recommended too. I'll let you know.
Reply
Old Aug 28, 2010 | 08:09 PM
  #12  
EasyEd's Avatar
EasyEd
Instructor
 
Joined: Aug 2010
Posts: 129
Likes: 0
Default

Bubbba91,
You were absolutely right!!! We dropped the steering column, tore out the dash, and the cowling behind to get to the CCU. Related to other problems. I was working on the passenger side fastenings most of the day, but just before we were going to quit for the day, I was on the drivers side working on something when I saw the connector in the pictures above. Top of the instrument cluster assembly, just where you said it would be.
I took a screw driver and put pressure on one side then the other trying to get a good seat.. When the key was turned on,,, normal dash. Hurray!!!!! I haven't seen that in months. Thanks for the pictures, man I would never recognized the connector without them. Still have to tear the assembly apart and clean and grease it, but that is no biggie.
One problem down, many more to go.
Thanks again,
Ed
Reply
Old Aug 28, 2010 | 10:25 PM
  #13  
ddahlgren's Avatar
ddahlgren
Melting Slicks
10 Year Member
 
Joined: Dec 2008
Posts: 2,772
Likes: 64
From: Mystic CT
Default

I have a CNC that has a few of that style of molex connector in my shop. Had some trouble with it a while back and manufacturer said there was an up dated pin design. I will take a look for them Monday. I had similar situation with intermittent connection and operation.
Reply
Old Aug 29, 2010 | 10:00 AM
  #14  
twin540's Avatar
twin540
Pro
10 Year Member
 
Joined: Feb 2007
Posts: 740
Likes: 2
From: San Antonio TX
Default

Originally Posted by ddahlgren
I have a CNC that has a few of that style of molex connector in my shop. Had some trouble with it a while back and manufacturer said there was an up dated pin design. I will take a look for them Monday. I had similar situation with intermittent connection and operation.
Can you keep us posted?
Reply

Get notified of new replies

To My dash





All times are GMT -4. The time now is 03:26 AM.

story-0
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-1
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-2
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-3
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-4
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-5
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-6
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-7
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-8
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-9
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE