Im not even sure how to search for solutions to this problem, since I don't even know what to call the problem, but I have been trying. 1993 FZJ80 automatic, when I take off from a dead stop, gear selector in D, the transmission starts off in 2nd or 3rd gear. I can shift manually up through the gears and it seems to work fine. But where do I begin to look as far as troubleshooting this problem? Im clueless when it comes to transmissions. I just finished a complete rebuild of the motor, fwiw.
Transmission shift problems
- Thread starter Kfire01
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Most likely a shift solenoid or related wiring, any codes?
- Thread starter
- #3
Well, my CEL is either burnt out or disconnected. That was my next project, to pull the dash and replace it. Thanks for the response.
His recently did you finish your engine build? Did the transmission ever oprlerate normally after the engine went back in?
- Thread starter
- #5
No. This is the first drive since dropping the motor in. It didn't have this problem before the rebuild. Im 99. % positive I've got all the connectors going to the tranny connected. If a solenoid is out will it throw a code? (Sorry if that is a stupid question)
Any updates? I'm getting the same issue, but only if I start when I first put it in gear (i.e., it was in P first). Once it's been going, starting up from a dead stop (but still in D) and it's fine. I've read some posts and will see if the kick down switch needs adjusting. The truck had been sitting for 6 weeks and the battery was completely dead, so I'm wondering if that has anything to do with it.
- Thread starter
- #7
No updates yet. Hopefully this weekend I'll get the dash pulled so I can get my CEL working. Maybe it'll tell me something. Goodluck.
Did you happen to try to adjust the kick down and/or throttle cables? I read about that as a common fix for some related issues (or at least a cheap place to start).
- Thread starter
- #9
I did, but didn't seem to make any difference.
Sounds like your shift solenoids to me, or NSS, also, check the ground at the tail section on your tranny, make sure it's hooked back up or it won't shift right...
If you get a trans manual, it will have detailed troubleshooting info, including locating the plug that goes to the shift solenoids (under the dash) and putting juice directly to them to test...
Good luck!!
If you get a trans manual, it will have detailed troubleshooting info, including locating the plug that goes to the shift solenoids (under the dash) and putting juice directly to them to test...
Good luck!!
- Thread starter
- #11
Will do. Thanks for the help.
NSS?
- Thread starter
- #13
I just found a copy of the transmission fsm so now I have the correct troubleshooting procedure. I'll know this weekend.
- Thread starter
- #14
I just found a copy of the transmission fsm so now I have the correct troubleshooting procedure. I'll know this weekend.
I know that this is a really old thread, but I'm wondering if your ever got resolve to your problem and most importantly for me, where did you find a transmission shop manual? I have a shift problem and I need to test this transmission right away.
Thanks for the help!
I have a 97 with, what I believe to be an A340 transmission. If I have a TP at around 20% the rig shifts flawlessly. If I apply more TP it will shift fine through 1st but will hang in 2nd until it reaches like 70% TP and shift real hard and bang through 3rd like it's not there and on to 4th. The problem is only in 2nd gear. It's not a fully electronic transmission. It has a pressure cable that goes to the throttle leakage. I have checked all of this and it is in good shape, tight and adjusted well. I need to go deeper into this transmission to find this issue. I started by reading threads on here to see what others have gone through, hence your thread.
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