bigken

iTrader: (8)

I am in the process of buying a street/strip rebuild kit for it now and I will let you know if I have any success with it. They funny thing is that after the initial tune for the stall the transmission ran fine and there was no issue with the WOT shifts until about a month after so thats what leads the tuner to believe this is the culprit. Hopefully getting it rebuilt will solve my issues, I will let you know, all it takes is money LOL.

Philip Pugeau

Hmmm, here's my case after a high performance rebuild:
(Car has been tuned for stall, gear, motor)

Launch in 2nd WOT, 2-3 shifts at 5500, commanded at 5200.

Low-power shift 1-2 (manual or auto), WOT through 2nd, 2-3 shifts at 5500.

High power shift 1-2 (manual or auto), WOT through 2nd, 2-3 hits limiter at 6500. If kept at WOT at limiter, it will shift into 3rd. If I let off in 2nd (selector in 3 or D), trans stays in 2nd briefly, then goes into 3 or D.

In all three cases (when shifting manually), I would move the selector into 3 or D early while accelerating in 2nd, not making the shift manually when it was time. This allowed the trans to be full auto during the 2-3 shift.

Junkyarddog89

I will probably give it a try, If it breaks It needed to be replaced anyway.

If you mean doing a diagnostic scan its been done several time and no codes. If not what do you mean?

What kind of kit are you going with and what does it come with?

jimmyblue

iTrader: (11)

There's code scanning, and there's data logging of what
goes on in real time. Codes are the cherry on top and a
lot more is there, if you have the tools to ask.

Junkyarddog89

So I go into a shop and tell them to get some data logging done on it and from that they will be able to see where the problem is... Do I got that right? Sorry if these questions are stupid, this is my first "new" car...

mrvedit

Don't feel bad; I'm not following JimmyBlue fully either. I have HP Tuners which has data logging, but have never tried to log transmission info. However, I believe the only thing about the trans the PCM knows about it is what position the gear selector is in (e.g. D-3-2-1), what gear the PCM has asked for and whether the TCC should be locked; of course it also knows the vehicle's speed and engine rpm. When it request a gear change or TCC lock, it checks that the resulting rpm change "makes sense" and occurs within a specified time; if not it will throw a code such as 1870.
As I understand JimmyBlue, you would examine the logs yourself, look for the PCM's request to change a gear and check how quickly (if at all) the RPMs changed. Not trivial, but do-able.

Junkyarddog89

So If the PCM requests a gear change and the RPMs don't change does that mean there is a problem with the PCM?

mrvedit

No, it usually means the transmission has a problem. Could be as simple as a bad electrical shift solenoid ($15 part easy to replace), or worn clutches (requiring a rebuild). It could also be a badly slipping torque converter. In theory (and very rare) it could be the power transistor in the PCM which activates each shift solenoid; I don't recall anyone ever reporting that problem. Still rare, but possible, is that there is a wire break in the cable going to the trans. I have read of people who while servicing the trans have bent over one of the pins in the trans connector.

Back to your problem - since the trans does shift into each gear in some situations, it cannot be any of the electrical problems I mentioned above. Since both your old and new trans have the same problem, that makes it less likely that the new trans has a problem. Most likely IMHO, is the VSS (Vehicle speed sensor) or a slipping torque converter. Torque converters do go bad, especially if a worn valve body on your old trans caused the converter's lock-up clutch to clip and overheat.

Junkyarddog89

I assumed that they replaced the torque converter when they did the tranny, but now that you mention it it does feel kinda like a worn converter... Not badly worn but enough for a slow shift into passing gear from time to time, short shifts into 3rd occasionally.. I think that maybe it..

Youshallgofo

iTrader: (1)

I had a problem when I couldnt shift at wot too. All i had to do was add some trans fluid no joke. Make sure the fluid levels are right, if its off by even a 1/4 of a quart it will hit the limiter.

bigken

iTrader: (8)

What kind of kit are you going with and what does it come with?[/QUOTE]

I am going to go with a kit from probuilt
"Complete description of the parts in the rebuild kit"

"Front pump"
Seal retainer
Late design seal
13-vane rotor with vanes, slide, rotor guide & pin assembly
Trans-Go steel rings & priming spring (under 5,500 rpm)
New replacement stator support with extra wide bushings installed
TransGo .500 boost valve

"Clutches, Steels And Pressure Plates"
4 Borg-Warner reverse/input clutches .078
4 Reverse/input "low drag" Turbulator steels .078
1 Reverse waved steel (eliminates the belleville spring that tears up the inside of the drum)
5 Borg-Warner forward clutches .070
5 Forward steels .090
2 Borg-Warner overrun clutches .078
2 Overrun steels .091
5 Borg-Warner low/reverse clutches .087
5 Low/reverse "low drag" Turbulator steels .068

Your choice of the Borg Warner Hi-Energy, 8 clutch setup for the 3-4 pack below,

8 Borg-Warner Hi-Energy 3-4 clutches .080
4 3-4 steels Kolene .060
3 3-4 Steels Kolene .076
1 3-4 top pressure plate .128
1 3-4 bottom apply pressure plate .225
1 3-4 snap ring .062

or the "modified" Raybestos Z-Pak, 16 one sided clutch/steel setup for the 3-4 pack.

16 one sided clutch/steel arrangement
1 5-tang apply ring
1 3-4 bottom pressure plate .225
1 3-4 top pressure plate .125
1 3-4 snap ring .062

Borg Warner dual cage 29 element sprag.
Beast sunshell or GM heat treated sunshell
Borg-Warner low/reverse roller assembly (late design)
Vamac 3 lip rear seal
Transtech paper & rubber (gasket) kit
Transmission filter (OEM)
Bushings (latest updates, including Teflon front pump & extension)
Thrust washer kit
Sealing ring kit
HD Bearing kit (Timken)
Borg-Warner Hi-Energy 2-4 band
Trans-Go Performance Shift kit, with .500 boost valve & w/accumulation for nice part throttle shifts
New steel molded rubber pistons for overrun, forward & 3-4
Modified second accumulator piston, new "hardened" (RC52) pin, & seal with matching accumulator springs (allows for a very smooth 1-2 part throttle shift)
New aluminum 4th oem pin and accumulator piston
New aluminum "modified" 2nd accumulator piston for smoother part throttle shifts
New Sonnax pinless accumulator forward piston
New 2nd "hardened" (RC52) accumulator pin

shortdog

iTrader: (1)

I had somewhat of a similar problem and it was the vss. No ses light, but it showed up in the tuning software. Replace the $25 vehicle speed sensor (vss) to see if that's the issue.

Junkyarddog89

Ill Give it a shot. Do I need to go to the dealer for the part and Where is the VSS located on the vehicle?

mrvedit

The VSS is at the back of the trans on the passenger side; a small cable with 2 wires goes to it. IIRC, a small 8mm bolt holds it on.
Obviously the dealer has them, not sure if for $25 though.

mrvedit

I found it on Amazon for $16:
http://www.amazon.com/ACDelco-213-17...2002&carId=003

(Double check that this is the right part.)

Order another $10 (Book, DVD, etc) and get free shipping.
BTW - You can order anything from replacement parts to forged cranks to Wilwood brakes on Amazon, often at the best prices and less than e.g. Summit or Jegs.

Junkyarddog89

Right on. Thanks guys, I'll see if this works... A cheap fix would be nice for a change. haha

sweet99ss

iTrader: (41)

I didn't get my tranny filled good once and it did a bunch of weird **** at WOT. Not at all saying that is your problem. Im subscribing to this thread though. Very interested to see what this is. I really doubt it would be your transmission clutches going out with 40k miles. Running them hard they should still go atleast 80k miles as long as they are maintaned right.

gregrob

iTrader: (8)

Unplug the DAMN MAF and see if it shifts like was mentioned earlier!

Junkyarddog89

I would love to but here in Colorado, IT'S WINTER. Getting a Camaro out of a steep driveway and up a very hilly street is not currently an option I have until some ice and snow melts sir.

Junkyarddog89

No I DID have clutches go out at 38K the tranny was toast, no joke. But for sure man I'll keep whoever is interested posted as I can get things done on it.