automatic transmission fale safe?

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kevinarich
Posts: 216
Joined: Sun Apr 23, 2006 1:02 pm
Car: S14

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Does my 96 auto have a fail safe mode? Is that why Im getting stuck in 3rd. I also have a cel, its a 123 which is overrun clutch solonoid??? Havent found anything using the SEARCH!!! button. so anyone have any insight? I think aamco is full of poop.


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onosqv
Posts: 5675
Joined: Wed Aug 07, 2002 12:32 pm
Car: '92 240sx Vert
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You are absolutely right: stuck in 3rd = fail safe.

This thread may help: 1989 240sx OD problem
ricebike wrote:oh crap!

did you check/replace the trans fluid & engine oil as well???

EXCESSIVE heat will turn that pink fluid to brown... engine oil would be like hersheys syrup... hope you did those things as a follow thru...

-----------------ok, 10 steps for the self-diagnosis of the auto transmission using the OD OFF indicator lamp:

warm up engine/transmission to operating temp

turn key OFF

1: set OD switch ON

2: make sure it's on P ~ key ON, engine not start; do U C OD OFF light on for two seconds? if so, move to step 3

3: key OFF & shift to D

4: set OD switch OFF ~ key ON, engine not start ... wait ~ two seconds

5: shift to 2

6: OD switch ON

7: shift to 1

8: OD switch OFF

9: step on gas pedal all the way & release

10: OD switch ON

then, u should see the OD OFF light flashing 10 times

---------------------

u r looking for that long flash = the trouble code

if ALL ten flashes da same: OK

1: revolution sensor/circuit shorted or disconnected

2: speed sensor short/disconnected... etc.

3: throttle sensor

4: shift solenoid A

5: shift solenoid B

6: overrun clutch solenoid

7: lock-up solenoid

8: fluid temp sensor disconnected or AT control unit power source is damaged

9: engine revolution signal circuit

10: line pressure solenoid circuit--------------------------XTRA+++

if the OD OFF light is flickering: battery power low, battery disconnected fo long time

if OD OFF light is always on after setting the trans into diagnostic mode: u got a damaged trans control unit or the following is disconnected/shorted:

inhibitor switch, OD switch, kickdown switch, idle switch

hope that helps

Modified by ricebike at 2:51 PM 11/15/2006

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kevinarich
Posts: 216
Joined: Sun Apr 23, 2006 1:02 pm
Car: S14

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Thanks alot that made things easier. I have now concluded that someone before me was doing burnouts in my car and caused the fluid to burn. Causing the failsafe and the overrun to go freak out. I will fix these problems. Thanks you.


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