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I need to know where the overdrive solenoid is on my 1992 f350 it has a 460 gas motor and automatic trans when in drive it is kicking in and out of overdrive in first gear

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  • Cars & Trucks Master
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Run fault codes before you touch the transmission as it may be a faulty transmission control module that is at causing your problem

Posted on Nov 17, 2013

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Posted on Jan 02, 2017

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SOURCE: 1992 A4LD trans problems.

Sounds like the shift kit is warn out in the transmission. The overdrive line may not be able to provide enough hydrolic pressure to engage the gears to move the truck. When you switch to regualr drive, that line is able to build the hydrolic pressure to engage the gears. At a certian speed (for the transmission, certian hydrolic pressure) there is enough pressure to engage the gears in overdrive, but go below that, and you have to start in drive again. If this is the case, there is no easy fix for that and I recomend taking it to a transmission shop to have your shift kit examined. Opening up an automatic transmission requires specalized tools, clean shop enviroment, and knowlage more then the average back yard machanic has.

Posted on Oct 28, 2008

  • 383 Answers

SOURCE: 1999 nissan frontier overdrive problem

juan: there is a cable which comes from the transmission to the throttle linkage. This is called the TV (throttle valve) cable. This is designed to work in conjunction with the position of the throttle. I'm sure you heard the term "KICK DOWN SWITCH". Well this essentially is doing the same thing. If the cable is out of adjustment, it will have a tendency to want to downshift into 3rd.
Even though overdrive is electrically actuated, it can be disengaged by the throttle position.
There is also a coolant temp sensor which keeps the transmission from shifting into overdrive until the coolant temperature reaches a certain point. The sensor tells the ECM to tell the Solenoid it's ok to supply a ground to it.
Your overdrive switch provides a ground to actuate the overdrive solenoid. Make sure the switch has a solid ground serving the circuit.
The torque converter solenoid picks up it's ground from the ECM.
Both solenoids are served by the same power source which is a switched circuit through the ignition.
I hope I have shed some new light on your problem and given you some new direction in which to look. I hope I have helped you resolve your problem. If not, I'll be watching and will be ready to offer more help if needed. ..mybunkey

Posted on Apr 16, 2009

rockitman187
  • 2559 Answers

SOURCE: automatic transmisson control solenoid

You need to remove the filter.(It's the bid flat metal piece that you see with 1 or 2 screws holding on)

Posted on May 08, 2009

  • 18 Answers

SOURCE: 2000 es300 lexus auto w overdrive button overdrive 4th gear not work

There isn't anything wrong with your car. This is perfectly normal. I have a 2000 ES300 as well as other people that I know and it operates in the same way. Overdrive doesn't mean the same thing for every car or transmission. In our case overdrive is simply a reference to the top gear which is 4th gear. When you switch overdrive off(which is depressing the button causing the O/D OFF dash light to illuminate,) the highest gear becomes 3rd because you turned 4th gear or overdrive off. The application scenario for this is usually mountainous terrain where a lot of uphill driving makes it more feasible not to up shift into 4th gear while ascending and descending. It will not switch back to overdrive or 4th gear until you re-engage it by turning the overdrive back on or repressing the button. Again, when the O/D OFF dash light is illuminated, overdrive which is 4th gear is off and the highest gear will then become 3rd. It will never shift into 4th gear while this light is illuminated or overdrive is off. When you press the button and the O/D OFF dash light is NOT illuminated overdrive is on and therefore it will shift into 4th gear as usual. This applies to all 97-2001 ES300's and probably any other car you drive tat exhibits this same type of change when overdrive is turned off.

Posted on Jul 22, 2009

gfleites
  • 1 Answer

SOURCE: 4L80E trans. Lost passing gear/overdrive suddenly

Bad transmission, that's not a good answer. Bring it to the shop [so we can guess around], not a good answer either.

A good mecahanic will respond with something about the solenoids.

I have repaired the 4L80E on my tow truck, I have to do that almost every year, the last time it ran perfectly but when I push the pedal to the metal, it shifted from 3rd gear to 2nd and stays on 2nd gear until I turn the ignition off and start again.

The transmission was totally rebuilded so the answer "Time to rebuilt the transmission" is not acceptable.

I took it back to the shop and the mechanic replaced both solenoids A and B, that was the only thing that hasnt been replaced before, it was just a guess but works

So, I am not a mechanic but my sugestion is to replace the two speed sensors and solenoids before you take the tranny out of the car and be carefull who are you taking the transmission to because guessing is not always the best course of action

The two speed sensors are easy to replace, the solenoids are inside of the valve body but you may be able to replace them without removing the transmission from the truck

Posted on Jan 13, 2010

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Don't listen to that guy, he doesn't know what he's talking about!! I have an 85 Celica with the very same issue. I was told it could be some kind of temperature sensor that may not be working properly. There is a sensor, I was told in the exhaust line that indicates that the car has reached operating temperature and until that sensor is tripped, it will not activate the solenoid that allows overdrive to engage, it could also be that solenoid malfunctioning, or maybe a fuse or the switch that turns on the overdrive malfunctioning.. I would check those things first before you go thinking the trans is having issues.

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I have a 1992 Ford explorer that will not shift when in drive or overdrive but will shift manualy. What can cause this?


cant say for sure but check the fuses shifts are controlled by solenoids in the tranny most good trans shops cancheck computer codes for other problems and willl know of problems usuallly with each different vechile

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1992 A4LD trans problems.


Sounds like the shift kit is warn out in the transmission. The overdrive line may not be able to provide enough hydrolic pressure to engage the gears to move the truck. When you switch to regualr drive, that line is able to build the hydrolic pressure to engage the gears. At a certian speed (for the transmission, certian hydrolic pressure) there is enough pressure to engage the gears in overdrive, but go below that, and you have to start in drive again. If this is the case, there is no easy fix for that and I recomend taking it to a transmission shop to have your shift kit examined. Opening up an automatic transmission requires specalized tools, clean shop enviroment, and knowlage more then the average back yard machanic has.

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