87 turbo auto trans
#1
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87 turbo auto trans
i was cruising around in my 4 runner the other day
and i noticed the overdirve light was blinking on and off. no real pattern to it really.
if i pushed the over drive switch to off position. the light would come one and stay on and the truck would rev up. (like its supposed to).
but then when i pushed the switch again. it would shift again and the light would start blinking.
if i turned the truck off and waited abt 5 minutes then started again. it would come back..
i think. but am not totally sure the light only blinks if i am manual shifting it.
i have to sometimes start out in L other wise the tranny slips. other times i can just leave it in D and itll work great.
and i noticed the overdirve light was blinking on and off. no real pattern to it really.
if i pushed the over drive switch to off position. the light would come one and stay on and the truck would rev up. (like its supposed to).
but then when i pushed the switch again. it would shift again and the light would start blinking.
if i turned the truck off and waited abt 5 minutes then started again. it would come back..
i think. but am not totally sure the light only blinks if i am manual shifting it.
i have to sometimes start out in L other wise the tranny slips. other times i can just leave it in D and itll work great.
#2
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pull that code ASAP!
far as I can tell the only difference in that tranny and a V6 one is the transfercase... And you don't want it...
Pretty sure the 22RE's are the same... as the RTE one...
far as I can tell the only difference in that tranny and a V6 one is the transfercase... And you don't want it...
Pretty sure the 22RE's are the same... as the RTE one...
#3
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I kno I don't want it. Lol.
But this truck is in perfect condition and dnt want to destroy it.
So the light blinking means I should jumper the connector and pull codes?
I just wanted to make sure it wasn't a shorting wire or something like that?
But this truck is in perfect condition and dnt want to destroy it.
So the light blinking means I should jumper the connector and pull codes?
I just wanted to make sure it wasn't a shorting wire or something like that?
#5
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I can't remember if this has something to do with you or not... I was looking for something else and found this...
Don't really want to read it again either...
http://www.pirate4x4.com/forum/showthread.php?t=587521
"Features of the A340H transmission:
The throttle position cable controls the line pressure only, it does not affect shift points. Shift points are determined by throttle position information from the TPS sensor on the throttle body.
Thus it is easy to perform a free shift kit just by adjusting the cable tighter or even disconnecting it and fixing it to a wide open throttle position.
Electronically controlled shifting. When the computer detects a mechanical or speed sensor problem, it goes into a "limp home" or failsafe mode. It will defaut into 3rd gear (direct drive) and the OD light will flash.
It is also easy to covert to a 'full manually controlled" state with a simple electrical control unit, that can easily be switched between fully auto and fully manual shift control.
"ECT" button can select normal or 'power' mode. When in power mode the shift points are raised approx. 500rpm and the torque converter clutch will not lock up (see overheating below)."
Don't really want to read it again either...
http://www.pirate4x4.com/forum/showthread.php?t=587521
"Features of the A340H transmission:
The throttle position cable controls the line pressure only, it does not affect shift points. Shift points are determined by throttle position information from the TPS sensor on the throttle body.
Thus it is easy to perform a free shift kit just by adjusting the cable tighter or even disconnecting it and fixing it to a wide open throttle position.
Electronically controlled shifting. When the computer detects a mechanical or speed sensor problem, it goes into a "limp home" or failsafe mode. It will defaut into 3rd gear (direct drive) and the OD light will flash.
It is also easy to covert to a 'full manually controlled" state with a simple electrical control unit, that can easily be switched between fully auto and fully manual shift control.
"ECT" button can select normal or 'power' mode. When in power mode the shift points are raised approx. 500rpm and the torque converter clutch will not lock up (see overheating below)."
#7
Registered User
Turbo trucks run the A340H much like the later V6 trucks. The A340H has a hydraulicly shifted transfer case. the Hi/lo is controlled by a fourth solenoid on the transmission. To check codes, there's a connector in the engine compartment behind the air box. It has a single wire, and I THINK it was square, but it may not be. It's basically the only single wire plug there. Short it to ground, and put the truck in ACC. The OD light will flash the transmission codes
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#8
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I was afraid of that... I just checked mine this mourning and it has the same looking TC a A340 I have out of a V6 4Runner in the floor has...
Damn! And 4x4wire is wrong!
"A340F 1984-1999 22RE, 22RTE 4 2.80 ??? ??? Found on vehicles with manual hubs and V6 models after '96."
http://www.4x4wire.com/toyota/faq/parts/
"Why are vehicles with the Toyota A340H trans/t-case so gutless?
(Compared to their 5 speed counterparts with the same motor). Normally, an auto tranny both consumes power and mutiplies torque. In the case of the A340H, the power consumption is doubled by the addition of the hydraulic transfer case, which is essentially like having another automatic transmission inline."
"A simple though exspensive solution is to replace the hydraulic chain driven transfer case with a gear driven one."
Damn! And 4x4wire is wrong!
"A340F 1984-1999 22RE, 22RTE 4 2.80 ??? ??? Found on vehicles with manual hubs and V6 models after '96."
http://www.4x4wire.com/toyota/faq/parts/
"Why are vehicles with the Toyota A340H trans/t-case so gutless?
(Compared to their 5 speed counterparts with the same motor). Normally, an auto tranny both consumes power and mutiplies torque. In the case of the A340H, the power consumption is doubled by the addition of the hydraulic transfer case, which is essentially like having another automatic transmission inline."
"A simple though exspensive solution is to replace the hydraulic chain driven transfer case with a gear driven one."
Last edited by tried4x2signN; 04-01-2010 at 04:04 PM.
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