Vig 2800 stall not locking up ??
Thread Starter
Racer
Joined: Jan 2007
Posts: 380
Likes: 7
From: SW Ontario
Vig 2800 stall not locking up ??
hi gang,
I have been researching on line all night, can't seem to find any info
car is a 97 C5.
already had LS6 intake, Halltech, LG headers, BB exhaust.
just had the following installed:
224/228 114+4
Patriot LS6 stage II
LS7 lifters
Katech oil pump
double roller chain
u/d pulley
HD tranny rebuild, billet servo, wider bands, planetary gear,
transgo shift kit
tranny cooler
Vig 2800 stall.
Tune
motor runs strong, issue is the converter won't stay in lock up on hwy,
seems to jump in and out at 70 MPH, stays more consistent at 85 MPH.
tranny was removed and everything checked out OK.
installer and Tuner took car for data logging, seems car is throwing "C" codes, once they are cleared car will lock right up. Codes come back and comes out of lock up.
They have ruled out the new stall, thinking it could be in the BCM ?
all research i can find says it does control the lock up.
i don't have the codes, just looking for advice.
I know I can order up a new BCM from Gene C if needed. just not sure if that is the issue ? they are working diligently away on sorting the car out and getting my baby back on the road. Just thought i would do some of my own research so I can sleep tonight
Comments.
thx
I have been researching on line all night, can't seem to find any info
car is a 97 C5.
already had LS6 intake, Halltech, LG headers, BB exhaust.
just had the following installed:
224/228 114+4
Patriot LS6 stage II
LS7 lifters
Katech oil pump
double roller chain
u/d pulley
HD tranny rebuild, billet servo, wider bands, planetary gear,
transgo shift kit
tranny cooler
Vig 2800 stall.
Tune
motor runs strong, issue is the converter won't stay in lock up on hwy,
seems to jump in and out at 70 MPH, stays more consistent at 85 MPH.
tranny was removed and everything checked out OK.
installer and Tuner took car for data logging, seems car is throwing "C" codes, once they are cleared car will lock right up. Codes come back and comes out of lock up.
They have ruled out the new stall, thinking it could be in the BCM ?
all research i can find says it does control the lock up.
i don't have the codes, just looking for advice.
I know I can order up a new BCM from Gene C if needed. just not sure if that is the issue ? they are working diligently away on sorting the car out and getting my baby back on the road. Just thought i would do some of my own research so I can sleep tonight
Comments.
thx
Pro
Joined: Jul 2004
Posts: 654
Likes: 6
From: Indialantic Fl
Monte04 -
Call Greg Ducatto with Phoenix Transmisson. He is, bar none the best trans guy I have ever dealt with and more than willing to help those in need with technical information even if he did not build your trans. He specializes in high performance automatics. His contact information is as follows: 817-599-7680 or www.phoenixtrans.com
He is located in Weatherford, TX which is just a little west of the Dallas/Ft.Worth, TX area. I know him personally from the SSR Forum.
Call Greg Ducatto with Phoenix Transmisson. He is, bar none the best trans guy I have ever dealt with and more than willing to help those in need with technical information even if he did not build your trans. He specializes in high performance automatics. His contact information is as follows: 817-599-7680 or www.phoenixtrans.com
He is located in Weatherford, TX which is just a little west of the Dallas/Ft.Worth, TX area. I know him personally from the SSR Forum.
Former Vendor
Joined: Jan 2007
Posts: 1,584
Likes: 17
From: Lubbock Tx
If it's throwing codes that keep it from locking up then it locks up when they are cleared, the codes are obviously what you need to look at.
The first assumption as noted above would be misfire codes, but we can't tell you for sure without you finding out what the codes are.
The first assumption as noted above would be misfire codes, but we can't tell you for sure without you finding out what the codes are.
Melting Slicks
Joined: Jul 2004
Posts: 2,567
Likes: 1
From: Edmond, OK...One of the first rules of online forums: If you don't like what is said but can't refute it, attack the poster.
I had the same thing happen to mine. We found there was more than one place to put the rear end ratio in the tune. Not exactly sure where the two different places are, but my tuner showed me where it said 2:73 in one place and 3:42 in the other. When he changed them both to 3:42, it locked up just right and quit throwing codes. Mind did it around 70mph also.
Former Vendor
Joined: Jul 2010
Posts: 4,504
Likes: 4
From: Waterloo Ontario
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
Burning Brakes
Joined: Jul 2006
Posts: 968
Likes: 12
From: Regina Sask
Those codes won't cause the TCC not to lock.
Setting the P0300 misfire code to no error reported in the tune is not the correct way, you need to max the idle & low rpm misfire tables. And set the P0300 code back to stock.
Russ Kemp
Setting the P0300 misfire code to no error reported in the tune is not the correct way, you need to max the idle & low rpm misfire tables. And set the P0300 code back to stock.
Russ Kemp
Former Vendor
Joined: Jul 2010
Posts: 4,504
Likes: 4
From: Waterloo Ontario
Would insufficient 02 switching codes set this off? The car has LG street headers.
Last edited by Arun@CCP; Oct 22, 2010 at 10:10 AM.
Former Vendor
Joined: Jul 2010
Posts: 4,504
Likes: 4
From: Waterloo Ontario
Russ-this is what's happenning-the converter locks up just like it should-then about a 2 or 3 minutes later the converter will unlock and will not lock up again-until I clear the codes in the DTC.
This is on a steady state cruise on the HWY.
This is on a steady state cruise on the HWY.
Burning Brakes
Joined: Jul 2006
Posts: 968
Likes: 12
From: Regina Sask
Try setting the tune as I suggested. Seen the same issue before, as there weren't enough misfires to set off P0300, but the TCC would unlock at times. Also set the TCC max duty cycle table to 100 & the min duty cycle table to 90.
As for the insufficient O2 codes, just set them to no error reported, common problem with long tube headers.
Russ Kemp
As for the insufficient O2 codes, just set them to no error reported, common problem with long tube headers.
Russ Kemp
Last edited by Russ K; Oct 22, 2010 at 11:12 AM.
Former Vendor
Joined: Jan 2007
Posts: 1,584
Likes: 17
From: Lubbock Tx
Try setting the tune as I suggested. Seen the same issue before, as there weren't enough misfires to set off P0300, but the TCC would unlock at times. Also set the TCC max duty cycle table to 100 & the min duty cycle table to 90.
As for the insufficient O2 codes, just set them to no error reported, common problem with long tube headers.
Russ Kemp
As for the insufficient O2 codes, just set them to no error reported, common problem with long tube headers.
Russ Kemp
Former Vendor
Joined: Jul 2010
Posts: 4,504
Likes: 4
From: Waterloo Ontario
Try setting the tune as I suggested. Seen the same issue before, as there weren't enough misfires to set off P0300, but the TCC would unlock at times. Also set the TCC max duty cycle table to 100 & the min duty cycle table to 90.
As for the insufficient O2 codes, just set them to no error reported, common problem with long tube headers.
Russ Kemp
As for the insufficient O2 codes, just set them to no error reported, common problem with long tube headers.
Russ Kemp
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
Agree with maxing out the misfire tables and the PWM table settings---
A couple comments-----Why do a shift kit on a computer controlled trans ?? I have seen so many transmissions go south beacuse of shift kits on a computer tranny---typically shift kits will just increase line pressure to the point where something always goes wrong or seals start failing---With a shift kit you can try taking out all the tq mgmt---Set the Trans pressures in the tune back to stock---set all the "shift times " to "0" (puts it in adapt learning mode)
Also ANY misfire whether real or false will unlock the converter---
AND anytime you touch the brake pedal the conv will unlock---check the brake light switch--
A couple comments-----Why do a shift kit on a computer controlled trans ?? I have seen so many transmissions go south beacuse of shift kits on a computer tranny---typically shift kits will just increase line pressure to the point where something always goes wrong or seals start failing---With a shift kit you can try taking out all the tq mgmt---Set the Trans pressures in the tune back to stock---set all the "shift times " to "0" (puts it in adapt learning mode)
Also ANY misfire whether real or false will unlock the converter---
AND anytime you touch the brake pedal the conv will unlock---check the brake light switch--
Thread Starter
Racer
Joined: Jan 2007
Posts: 380
Likes: 7
From: SW Ontario
update,
thanks for all the suggestions, the guys have worked hard and traced the lock up issue down to a bad wire from the TC to the EBCM. Seems there was a bad comnnection and the resistance was droping the voltage signal down, giving false readings
Now that issue is resolved, the car has 140 test miles and nothing but solid lock up.
I am curious with all the comments about the shift kit with a computer controlled tranny.There really seems to be 2 divided schools of thought. The car does have a wicked 1-2 hard shift. My tuner will be reducing the line pressures and playing with the TQ management to smooth things out.
Thanks again for the help,
Corey
thanks for all the suggestions, the guys have worked hard and traced the lock up issue down to a bad wire from the TC to the EBCM. Seems there was a bad comnnection and the resistance was droping the voltage signal down, giving false readings
Now that issue is resolved, the car has 140 test miles and nothing but solid lock up.
I am curious with all the comments about the shift kit with a computer controlled tranny.There really seems to be 2 divided schools of thought. The car does have a wicked 1-2 hard shift. My tuner will be reducing the line pressures and playing with the TQ management to smooth things out.
Thanks again for the help,
Corey
Safety Car
Joined: Jun 2004
Posts: 4,986
Likes: 393
From: Stoney Creek Ontario
good to hear it's been sorted out - we've been waiting to find out.... ,my trans also has a wicked shift 1st - 2nd, no shift kit, Arun did my tune and a few other tranny adjustments, got to get him to play around with it some more when whenever we can hook up again, he was telling me something about recommending 15% torque management at shift points and some other things, works good at the track though...
Thread Starter
Racer
Joined: Jan 2007
Posts: 380
Likes: 7
From: SW Ontario
good to hear it's been sorted out - we've been waiting to find out.... ,my trans also has a wicked shift 1st - 2nd, no shift kit, Arun did my tune and a few other tranny adjustments, got to get him to play around with it some more when whenever we can hook up again, he was telling me something about recommending 15% torque management at shift points and some other things, works good at the track though...
Arun & Jr are never satisfied until the car runs as expected. He will be droping in a new tune early next week to smooth the shift hardness out.
Hoping to the hit the Dyno also before the white stuff flies
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
A shift kit mechanically alters parts in your tranny to bypass the computer control and increase line pressures
A tuner can make any computer controlled trans shift hard and bark the tires in 2nd-- maybe evn 3rd-- But do it electronically-- The key is you still have the ability to re-adjust the trans if its too violent or harshen it up--- or return to stock
Most shift kits will make these fine tuning parameters not availiable and you get what you get---all they now can do is try to lower trans pressures --but since the trans was mechanically altered--it typically doesn't respond to computer tuning
You have to be very careful with a C5 with approx 400 RWHP---If you shift it too violently at the 1-2 WOT shift---it will break the tires loose badly and pitch the car sideways--Only thing now is you're go 60 MPH--sideways and WOT !!!! don't care if you're Mario Andretti--you're not gonna catch it----
A tuner can make any computer controlled trans shift hard and bark the tires in 2nd-- maybe evn 3rd-- But do it electronically-- The key is you still have the ability to re-adjust the trans if its too violent or harshen it up--- or return to stock
Most shift kits will make these fine tuning parameters not availiable and you get what you get---all they now can do is try to lower trans pressures --but since the trans was mechanically altered--it typically doesn't respond to computer tuning
You have to be very careful with a C5 with approx 400 RWHP---If you shift it too violently at the 1-2 WOT shift---it will break the tires loose badly and pitch the car sideways--Only thing now is you're go 60 MPH--sideways and WOT !!!! don't care if you're Mario Andretti--you're not gonna catch it----