nathan.carter95

just got a 99 z28 yesterday. i havent had any problems out of it till i washed it today. after i left the car wash i noticed it didnt want to shift till way late. it got worse, now it wont shift at wot. it just bounces off the rev limiter. is it possible i got something wet (pcm, speed sensor)? any help would be appreciated

nathan.carter95

btw it has slp headers, exhaust, and a mild cam

ZachJ03

iTrader: (4)

I dont have an answer for you, but I have a buddy with a bolt on 00 Mustang GT who's car is doing kind of the same thing. Its kissing the rev limiter before it shifts, mainly in the 1-2 shift. Im curious to find out what it may be as well. Has your car been tuned and shift points raised?

nathan.carter95

i dont know. it wasnt doing this when i first got it

nathan.carter95

gonna try a trans service today if i can get to it

1qwkz

iTrader: (5)

you need your trans rebuilt, its the 1-2 band out. i had the same probs

nathan.carter95

looks like a rebuild

1qwkz

iTrader: (5)

where are you located at nathan carter? i gotta guy in dfw who can do it and does wonders with the 4l60e for a dam good price! lmk

nathan.carter95

northeast arkansas... i put the scan tool on it today and it showed a bad circuit in 1-2 shift solenoid. gonna try that tomorrow, or maybe tonight.

msjcake

My 98 T/A is doing the some thing. Did you find out what the problem was?

Detroit Gearbox

If your problem is Only second-I would suspect a stuck ck ball in a worn out separator plate (quite common on high millage vehicles.)
If you had no 4th either, I would suspect a worn or broken band (anchor end breaks sometimes)

msjcake

Yea its just 1st to 2nd after it does shift everthing is fine. Normal driving it wont shift out of 1st until its 3000+ rpm's and at wot it just stays on the rev limiter in 1st.

Bluvette28

iTrader: (8)

Im having the same problem 2-3 gear is good its just 1-2 it sucks i cant race till i get money to fix it

00trans_am00

So what do u got to do to fix it?

Bluvette28

iTrader: (8)

Im buying a rebuild kit from all pro automatics and just beefing up the tranny. putting a stall in and a manual valve body with a slap shifter.

lt1pwr1

iTrader: (1)

Based on that info, I wouldn't assume the trans is shot just yet. You probably have a bad 1-2 shift solenoid or the wiring to it is messed up. It really is beneficial to have a scanner that can command the solenoids, then you can check for power at the 1-2 solenoid. If you don't have that option, you can just replace it and see.

My uncle's Silverado was doing the same thing with the 2-3 solenoid and a couple trans shops told him he needed a new trans. Well, my dad put the Tech I (old school truck) and saw there was nothing happening for the 2-3 shift solenoid and replaced it and it's been working fine since.