so this past week has been the hottest set of days consecutively i can remember in a long time (90-98 all week). i was on my way home from ed's shop in cleveland (about a 50 mile drive for me) and i started up a hill. i dont use cruise control too often, i can get better milage with my foot. so anyhow i give it some light gas going up the hill and the rpms start bouncing between 2000 and 1700 rpms, in what i believe was 4th gear. pretty sure that means the TC wouldnt lock up/unlock.

now granted it was 95*, i just drove 90 miles, and the fluid is the original 130k mile stuff, so it pretty much has no viscosity whatsoever when its hot out. if im driving in 3rd or 4th with the TC locked up and i give it partial throttle i can make it do the same thing. it was 95* today also. it also sometimes shifts kinda hard between 1st and 2nd.

i have a new filter, so im gonna drop the pan, change the filter and fluid, and maybe do another pan drop in a few weeks and replace some more fluid. that might help, it might not. im not that concerned. ive been doing a lot of racing at the track, and i know thats hard on the tranny, and i know that increases my chances of it going out massively. ive been prepared for that. if i have to rebuild/replace thats fine, i can build it with better parts.

my questions are

1. is it infact the TC causing this trouble?

2. could the old fluid/filter be causing this?

3. what parts should i start buying to rebuild with, keeping in mind i love going to the track? ed iis closeby, i could buy a transmission case and star putting it together and just wait for this one to go out.

4. i obviously have a gtp. what if i got a 3.29 double roller chain? what would that do for me? (besides better burnouts and steeper gearing?) could i use an HD differential with the 3.29's? i know i would have to reprogram the pcm, would anything else be involved?

5. is there anything else i should consider?

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'05 WRX STi - COBB Stage 2|Invidia DP|3" Borla XR-1|Coilovers|Camber Plates|Swaybars|Endlinks|Bushings|Braces|Anti Lift Kit|DBA4000s|SS lines|
Sold: 06 Cobalt SS/SC, 99 GTP 245WHP/326 Ft-lbs, 06 R6

#2 could be causing #1 to malfunction, and putting some fresh fluid & filter in surely can't hurt. I can't help you with the other questions, I don't know too much about tranny's.

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Bright Red 2008 G8 GT

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If you do anything with the chain, you'd want a 15/16" single chain with those 3.29's. The single chain is stronger. The double chain is quieter.

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One Big Ass Mistake America

First off I would drop the pan and change the filter. Use Dexron VI or full synthetic fluid, as well as Lucas Transmission Additive. I did that in mine, and nursed it along for another 20k before my torque converter exploded. Keep in mind that transmissions are extremely complicated, and it takes years of working on them to become a master, and it doesn't take much to screw one up. And yes, you can run 3:29 gears and an HD diff.

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Six-speed top-swapped GT, sold.
2006 F-150 4x4 for a daily driver.

well it kinda stopped doing the thing it was doing..but im saving soem money up in my piggy bank in case it decides to die some day..

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'05 WRX STi - COBB Stage 2|Invidia DP|3" Borla XR-1|Coilovers|Camber Plates|Swaybars|Endlinks|Bushings|Braces|Anti Lift Kit|DBA4000s|SS lines|
Sold: 06 Cobalt SS/SC, 99 GTP 245WHP/326 Ft-lbs, 06 R6

Kyle, I would still give it a service. Dropping the tranny pan is preventative maintenance that should be done every 50,000 miles.

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Six-speed top-swapped GT, sold.
2006 F-150 4x4 for a daily driver.

oh i wasnt saying im not gonna do that. i have the filter already (well actually its a shift kit..but im only usign the filter) i just need to go buy the fluid.

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'05 WRX STi - COBB Stage 2|Invidia DP|3" Borla XR-1|Coilovers|Camber Plates|Swaybars|Endlinks|Bushings|Braces|Anti Lift Kit|DBA4000s|SS lines|
Sold: 06 Cobalt SS/SC, 99 GTP 245WHP/326 Ft-lbs, 06 R6

It could be a vb or channel plate problem, changing the fluid is not going to help the problem.

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99 GS PT 61 IC 65# 1.9s 11.84@ 117 1.81 60'
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