LS1 brake torque ???

[Aceshigh]

Guys, I noticed my TCC Solenoid switch (I think that's what it is) had to be
hooked up to a relay with 3 wires, 1 of which goes to my brake switch....so
my torque converter lockup disengages as soon as I brake......

What I can't figure out is how come I can't do a brake torque ???
I was told because that TCC Solenoid ordeal is hooked and if my brake pedal
is depressed it won't engage completely and I just sit and sputter.

Kinda sucks.....

 

[GetMore]

Brake torque? Maybe it's a Chicago thing.
What I know it as (if I understand you) is a brake stand. A smoke show.

In first geat your torque converter clutch should not be able to engage, IIRC. Second through fourth it can, but not first. Shouldn't want to lock up at that low a speed anyway.

 

[1st and goal]

It's got to be progamable as I didn't have that problem when I drove my Z recently.

When I talk to my mechanic I'll ask him.

Marc

 

[rscamaro73]

Guess I gotta get April to show you how to do it, huh ??

 

[79camaro2001]

Guess I gotta get April to show you how to do it, huh ??

where is the fire patrol, this man got BURNED!!!

 

[Aceshigh]

Guess I gotta get April to show you how to do it, huh ??

Nah, it's something in the way this was setup I think.
It can't be setup correctly because it's impossible to do.

I'm not sure .....figured I might find a quick answer here.
Guess I'll have to hit up LS1tech.com to find the answer.

 

[April81Z28]

Guess I gotta get April to show you how to do it, huh ??

It's a little harder with the different rear and bigger tires in the back.....but I can still git 'er done!

 

[driftwood]

I'm thinking there is too much rear brake bias,would be the only thing that should make a LSx sputter when trying to do a "brake torque".My little 4.8(truck) spins without doing the brake torque trick.
What type of brakes on the rear?Have you done anything to upgrade the brakes?MC?Junction block/proportioning valve?
If you still have drums on the rear,try backing them off a little to make them somewhat "loose" and retry the burnout.Could try a "panic" stop in a desolate area or abandoned parking lot to see how the brakes "pull",may show rear too tight.
You should really be able to just mat the go pedal in first to do it without the brake.
Another potential problem is that the trans is not in first gear,possibly out of shift adjustment at the PRNDL on the manual shaft or cable itself or shifter.Easy check with a scan tool to see which gear is being commanded when shifter in first position.

 

[Aceshigh]

The rear brakes are stock drums, front are C-5 upgraded.

I don't think it's a brake problem....well kinda sorta.
The TCC solenoid (IIRC) is what is hooked up electronically to my brakes.

The torque converter does seem to be engaging and disengaging rapidly
which is honestly what it feels like when I try. There was 3 wires that
wouldn't allow the car to run properly that were coming OFF the ECU
and somehow when they wired them up, the car RUNS great now....but
no brake torques.....

Somehow I think it's those 3 wires.
I have to look and get the pin locations of each wire and maybe call John at Speartech
Something tells me this isn't hooked up right.

 

[driftwood]

If the TCC was locking up with the brake applied,your car would stall dead.It's the same principal as letting the clutch out on a standard car.The TCC removes any slippage from the converter,essentially locking the engine and trans together.
On the other hand,if the TCC was locking in first gear,the car would also feel extremely sluggish on acceleration from a stop,as though you were starting in maybe 2nd or 3rd gear.
I cannot see how this is TCC related,the car would stall,unless your trans is now cooked and internally slipping.
The TCC should be wired into the brakes like a Cruise Control switch only to disengage during brake application.This would have absolutely nothing to do with the car starting.
The TCC is a normally open valve,so if anything,it should not apply at all and have no affect on trans operation.If you like I could email/fax you the scematics for the TCC solenoid-lemme know.

I see you had another post about your shifter/cable problem,what was ever done to resolve that?I still think this might be where the problem lies,I'm not certain the trans is starting in 1st gear.Are you able to count 3 noticeable shifts while lightly accellerating?Has the PRNDL adjustment been checked?
And your brakes,what else did you do when you installed the C5 fronts?Did you change the master cylinder or proportioning valve?If you can find somewhere like a tar & chip road or dusty parking lot,hit the brakes at say 20mph and see if the rear lock up first.Try easing off the brake while doing a brake torque to see if the rears will start spinning.
Curious to what you find.