84 C4 Odometer After LCD Replacement
Thread Starter
Advanced
Joined: Aug 2013
Posts: 85
Likes: 1
From: Syracuse NY
84 C4 Odometer After LCD Replacement
I have replaced my LCD display with a full refurbished panel last fall. It was then I found that due to the transmission having been swapped, there was not a functional/compatible speed sensor, so no signal was being sent for some time. No odometer, milegage, speed, etc. The seller adjusted the odometer reading to be very close to what was in the crapped out display..and the panel is beautiful except for the Odometer.
I have read posts about the mileage is contained in the CCM and this may be the issue. Would a mismatch between the CCM and the odometer setting or swapping out the LCD Planel with the odometer cause the odometer not to function at all?If so, how do I work around this?
Any advice would be appreciated.
I have read posts about the mileage is contained in the CCM and this may be the issue. Would a mismatch between the CCM and the odometer setting or swapping out the LCD Planel with the odometer cause the odometer not to function at all?If so, how do I work around this?
Any advice would be appreciated.
Team Owner
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
I have replaced my LCD display with a full refurbished panel last fall. It was then I found that due to the transmission having been swapped, there was not a functional/compatible speed sensor, so no signal was being sent for some time. No odometer, milegage, speed, etc. The seller adjusted the odometer reading to be very close to what was in the crapped out display..and the panel is beautiful except for the Odometer.
I have read posts about the mileage is contained in the CCM and this may be the issue. Would a mismatch between the CCM and the odometer setting or swapping out the LCD Planel with the odometer cause the odometer not to function at all?If so, how do I work around this?
Any advice would be appreciated.
I have read posts about the mileage is contained in the CCM and this may be the issue. Would a mismatch between the CCM and the odometer setting or swapping out the LCD Planel with the odometer cause the odometer not to function at all?If so, how do I work around this?
Any advice would be appreciated.
Your speedometer works fine just no odometer? You mention no VSS but you don't mention speedometer was actually corrected. I'm assuming you corrected that aspect of it because you mention "beautiful"! Motor could be fine also and it be an odometer problem also.
Last edited by WVZR-1; Mar 19, 2014 at 02:43 PM.
Thread Starter
Advanced
Joined: Aug 2013
Posts: 85
Likes: 1
From: Syracuse NY
An '84 has no CCM and I'd believe you have an issue with the motor that drives the odometer in your cluster. There are tutorials for replacement and troubleshooting also.
Your speedometer works fine just no odometer? You mention no VSS but you don't mention speedometer was actually corrected. I'm assuming you corrected that aspect of it because you mention "beautiful"! Motor could be fine also and it be an odometer problem also.
Your speedometer works fine just no odometer? You mention no VSS but you don't mention speedometer was actually corrected. I'm assuming you corrected that aspect of it because you mention "beautiful"! Motor could be fine also and it be an odometer problem also.
Thanks guys. Stay tuned!
Safety Car
Joined: Aug 2009
Posts: 3,751
Likes: 276
From: Melbourne, Victoria, Australia
Hi
The odometer is completely seperate from the instrument cluster, there is a pair of wires from the instrument cluster to the odometer or odometer to instrument cluster. Check the plug has not come off, you will need to remove the instrument cluster to get to it.
Tip remove the dash pad first and the instrument cluster will come out a lot easier.
The odometer may have stopped working, you will have to locate the odometer assembly from a wrecking yard or ebay.
The odometer is completely seperate from the instrument cluster, there is a pair of wires from the instrument cluster to the odometer or odometer to instrument cluster. Check the plug has not come off, you will need to remove the instrument cluster to get to it.
Tip remove the dash pad first and the instrument cluster will come out a lot easier.
The odometer may have stopped working, you will have to locate the odometer assembly from a wrecking yard or ebay.
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 412
From: WV
There are a bunch of odometers for sale on ebay.. If yours is bad, just find one with close to the same mileage as your car... I'm not sure if the 84 is the same as later years but it looks like 84 -88 are a match...
..WW
http://www.ebay.com/sch/i.html?_odkw...vette&_sacat=0
.
.
.
.
.
..WWhttp://www.ebay.com/sch/i.html?_odkw...vette&_sacat=0
.
.
.
.
.
Last edited by WW7; Mar 20, 2014 at 07:48 AM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Racer
Joined: Dec 2012
Posts: 347
Likes: 25
From: Rockford Illinois
http://www.ebay.com/itm/151252593256...84.m1423.l2649
Here's a used one,just move the motor into your odometer.
http://www.ebay.com/itm/Corvette-C4-TPI-digital-dash-cluster-61K-speedometer-odometer-84-85-86-87-88-/161252432351?pt=Motors_Car_Truck_Parts_Accessories&hash=item258b64d9df&vxp=mtr
Last edited by TBSS/85vette; Mar 20, 2014 at 10:20 PM. Reason: more info
Pro
Joined: Oct 2012
Posts: 613
Likes: 3
The motors are all over Ebay, that's where I got my used one. Did you even look? Here is a brand new one.
http://www.ebay.com/itm/151252593256...84.m1423.l2649
Here's a used one,just move the motor into your odometer.
Corvette C4 TPI Digital Dash Cluster 61K Speedometer Odometer 84 85 86 87 88 | eBay
http://www.ebay.com/itm/151252593256...84.m1423.l2649
Here's a used one,just move the motor into your odometer.
Corvette C4 TPI Digital Dash Cluster 61K Speedometer Odometer 84 85 86 87 88 | eBay
Thread Starter
Advanced
Joined: Aug 2013
Posts: 85
Likes: 1
From: Syracuse NY
I have mine removed but was wondering how to test it to see if it was bad. I would hate to fry a good stepper motor by applying too much juice as I tap/pulse the leads. Otherwise I will have to go and get a used one. I would assume the motors are about the same with the LCD dsplay
Team Owner
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
If you use the original '84 odometer I believe it has to be an '84 motor BUT if you use a later odometer you need to use yet a different one.
I would check with Bryan before I did a thing. I'd have a conversation with him just to confirm the "check out" procedure also.
I would check with Bryan before I did a thing. I'd have a conversation with him just to confirm the "check out" procedure also.