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

FX3 Operational Question?

Thread Tools
 
Search this Thread
 
Old Mar 27, 2015 | 04:12 PM
  #1  
1991Z07's Avatar
1991Z07
Thread Starter
Safety Car
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2000
Posts: 4,564
Likes: 110
From: Austin Texas
Default FX3 Operational Question?

I've tried (and tried) to reset my FX3 system over the last 2 days. I've tried the paper clip method, and went to borrow a friends ScanTool only to find it isn't operational.

What I wanted to know was this: Will the system still work even if it flagged a code? I had a broken shock controller and it's fixed now, but I still get a code 34 (RR shock out of place).

I'm going to CotA this weekend...and want to make sure the system will still work.

TIA

P.S. Yes...I searched and didn't find this particular answer in the archives.

Last edited by 1991Z07; Mar 27, 2015 at 04:19 PM.
Reply
Old Mar 27, 2015 | 05:14 PM
  #2  
c4cruiser's Avatar
c4cruiser
Team Owner
20 Year Member
Veteran: Army
 
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Default

No, FX3 won't work if any of the codes are set. I believe the system uses a default setting (Tour?) for the other shocks/actuators that are working properly.

Did you check the small gear at the top of the shock rod when you re-installed the actuator? You should be able to easily turn that gear (and the rod). Also make sure the teeth in the ring gear in the actuator are not broken and same with the gear on the shock.
Reply
Old Mar 27, 2015 | 09:49 PM
  #3  
1991Z07's Avatar
1991Z07
Thread Starter
Safety Car
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2000
Posts: 4,564
Likes: 110
From: Austin Texas
Default

Originally Posted by c4cruiser
No, FX3 won't work if any of the codes are set. I believe the system uses a default setting (Tour?) for the other shocks/actuators that are working properly.

Did you check the small gear at the top of the shock rod when you re-installed the actuator? You should be able to easily turn that gear (and the rod). Also make sure the teeth in the ring gear in the actuator are not broken and same with the gear on the shock.
Actuators and shock gears are all from CaptainCNC...everything turns easy and fit as it should.

The plastic cover popped off after I installed them the first time...the epoxy gave up and separated where he popped them open to swap out the gears.

I just re-epoxied the cover back on and checked operation by connecting it up and turning the key on. Actuator went through the normal cycle...

I'm glad I had the shocks re-valved...the "Tour" mode is what the "Performance" setting was originally at...and it goes up from there.

If I could just get the damn thing to reset...I've tried it at least a few dozen times...both with key on, key off, disconnected the battery and grounded the positive/negative cables together for 30 seconds...

This is being a PITA...
Reply
Old Mar 28, 2015 | 07:23 PM
  #4  
corvetteronw's Avatar
corvetteronw
Race Director
Supporting Lifetime
20 Year Member
Veteran: Army
St. Jude 10 Year Donor
Liked
 
Joined: Feb 2003
Posts: 16,475
Likes: 270
From: Kingman AZ
Cruise-In VII Veteran
Cruise-In VIII
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16
Default

Does any of the info in this article help you?
http://www.corvetteactioncenter.com/tech/c4/fx3/
Reply
Old Mar 28, 2015 | 07:40 PM
  #5  
BPC9MM's Avatar
BPC9MM
Intermediate
10 Year Member
Liked
 
Joined: Feb 2011
Posts: 29
Likes: 3
From: Eureka Calif.
Default

It should reset by itself. Check the connection on the actuator.
Reply
Old Mar 28, 2015 | 07:50 PM
  #6  
c4cruiser's Avatar
c4cruiser
Team Owner
20 Year Member
Veteran: Army
 
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Default

Originally Posted by 1991Z07



If I could just get the damn thing to reset...I've tried it at least a few dozen times...both with key on, key off, disconnected the battery and grounded the positive/negative cables together for 30 seconds...

This is being a PITA...
The FSM states the a Code 34 (RR Out of Position) indicates that the shock rod gear is still turning and has not found the "stop" notch on the upper shock shaft.

There is a difference in the number of degrees the shock rod and gear should turn between the early FX3 shocks and the later ones. Something like 90 degrees for the early shocks and 60 degrees for the later shocks.

The procedure to clear FX3 codes without a Tech1 and the required brake cartridge is to turn the Ignition to ON and ground pin C and A in the ALDL for two seconds and repeat twice more for a total of 3 times. Have you done that?
Reply
Old Mar 28, 2015 | 09:40 PM
  #7  
1991Z07's Avatar
1991Z07
Thread Starter
Safety Car
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2000
Posts: 4,564
Likes: 110
From: Austin Texas
Default

Originally Posted by c4cruiser
The FSM states the a Code 34 (RR Out of Position) indicates that the shock rod gear is still turning and has not found the "stop" notch on the upper shock shaft.

There is a difference in the number of degrees the shock rod and gear should turn between the early FX3 shocks and the later ones. Something like 90 degrees for the early shocks and 60 degrees for the later shocks.

The procedure to clear FX3 codes without a Tech1 and the required brake cartridge is to turn the Ignition to ON and ground pin C and A in the ALDL for two seconds and repeat twice more for a total of 3 times. Have you done that?
Too many times to count...

Everything should be working fine...when I got the controllers back from CaptainCNC they all worked fine...until the RR popped in two at the epoxy joint.

The gears were all replaced on the shocks with new ones...in the exact same position as the ones I removed. They all worked...for about 1/2 day at CotA before the stress was too much (apparently) for the controller.

If I can't get it to reset with a Tech1...I'll ship that controller back to him and see if it is out of whack. Everything else is the same when it was working short of the controller being epoxied back together by me. It isn't like it's rocket science...the way he took it apart there was absolutely no doubt how the cover was supposed to go back on.
Reply
Old Mar 30, 2015 | 07:50 AM
  #8  
bad-zr1's Avatar
bad-zr1
Racer
20 Year Member
All Eyes On Me
 
Joined: Oct 2002
Posts: 372
Likes: 1
From: Corunna Mi
Default

Since you are going to remove the controller to send back anyway, swap the right with the left and see if the code follows the controller.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

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

 Joe Kucinski
story-9

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

 Verdad Gallardo
Old Mar 30, 2015 | 10:26 AM
  #9  
1991Z07's Avatar
1991Z07
Thread Starter
Safety Car
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2000
Posts: 4,564
Likes: 110
From: Austin Texas
Default

Originally Posted by bad-zr1
Since you are going to remove the controller to send back anyway, swap the right with the left and see if the code follows the controller.
Good thought...it's easy enough to do with it up on the lift.
Reply

Get notified of new replies

To FX3 Operational Question?





All times are GMT -4. The time now is 05:02 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
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-9
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