Turbo 400 problems!

[355sonoma]

I have a Turbo 400 that seems to have some problems. I was tuning the car the other day and when finished I did a few practice runs through all 3 gears. First, I have a B&M z-gate shifter, the tranny shifted itself out of 1 gear at 4000 rpm even though I never touched the shifter to move it to 2nd. Next, at WOT it\'s not shifting into 3rd gear. 2nd gears feels very strong (pulls hard) but when I shift it into 3rd it continues to rev. like it\'s still in second. Anyone know what the problem is?

http://www.s10v8.com/images/smilies/icon_confused.gif

[wild85]

Is it a rebuilt tranny or one from a bone yard? If it is from a bone yard, have it gone through by a tranny guy and rebuid whatever needs to be.

[wild85]

those seem to be things that happened to my 700r4 tranny before it kicked the bucket.

[Scotty_S-15]

Got a shift kit in it? If it does, check out what the mfg. says about the kit\'s operation and limitations. Is the trans linkage adjusted OK?

[355sonoma]

I\'m hoping it\'s something as simple as the trans linkage!

[MARKYMARK]

if it revs like its in nutral then goes into third it means high gear clutch pack is burnt up

[HILROD]

Or the vacuum line is off. Maybe just a bad modulator. Also a turbo 400 will shift to a higher gear by itself where depending on valvebody. http://www.s10v8.com/images/smilies/icon_smile.gif

[ChevyKiD_69]

if i remember right hilrod is right about shifting up by them selfs that way they wont burn them selves up. that is what i heard. maybe im wrong. nick

[speeder]

I agree with HILROD also on the upshift. About the no 3rd gear, I think that it is due to high line pressure, which can be due to bad modolator or it can be due to stuck detent solanoid.