Forums/Z31P/z31-performance-upgrade-forums driveline-aa/Has my Transmission failed?
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88fairlady: (2013-07-05 01:00:14)
88, NA, AT
Has stopped shifting. When I accelerate, the rpm's will quickly redline. I can drive a slower speeds to avoid redlining. However when driving at those slower speed, it seems as if the car slipped in to neutral until I press the gas harder.
Thanks in advance
Pdfflyer: (2013-07-05 03:55:13)
88 NA, Automatic trans shifting
Yes, You may have lost the shifting module, or it could be low on automatic trans hydraulic fluid.
After, checking it out carefully, please write back. I have just removed an automatic trans from my 88 in good working order and installed a 5 speed.
If you need a trans, please write me back and I will offer you a decent price + Shipping 814.882.1175
I live up north halfway between Buffalo, NY and Cleveland, OH and could have it there in 2 days
Pdfflyer
G-E: (2013-07-05 04:38:57)
You won't find many good answers here, almost everyone will tell you to 5-speed swap
Anyway, narrow down the problem a little, is it engaging and slipping or disengaging? Could be the torque converter isn't locking up (low fluid, low pressure due to contaminants..)
How does the fluid look/smell? Is it brown with dark or light flecks in it? Does it smell acrid like something burnt?
Are all the sensors and plugs good? Bad electrical contacts = bad feedback = bad operation… do the ASCD troubleshooting flowchart per fsm as well
When was the last time it had any servicing (fluid/flush/filter) ?
88fairlady: (2013-07-05 11:57:22)
I will try and narrow it down. I Will check everything you said and also provide a video.... Changed fluid in March/April
Thanks
visco: (2013-07-14 14:51:46)
Years back my sons car had similar issue and was leaking fluid. Found the control valve module (don't remember exactly where it was cause this was 5+ years ago) Removed the part and replaced the O rings which I bought from a hardware store and the problem was solved. Very simple job. The O rings keep the fluid in the proper chambers for shifting thru the gears. When they leak crazy stuff happens.
My 88 FSM shows this starting on page AT-32