Hey guys, I don't know much about electronics, I'm hoping you will be able to help me with a project. Thank you for any help in advance, I really appreciate it.
I need your help to build a PWM controller with a few specific characteristics. What I want it to do is power the lock up solenoid in my 4l80e transmission. It locks the torque converter in overdrive/3rd thus dropping the rpm for better mileage. I want it on a switch that I would operate while driving, but will deactivate when I hit the brakes, to turn it on again it would have to be reset (switched off then on again).
I have done an engine swap, put a TPI 305 (from a Camaro) into my Toyota 4X4 and hooked the 4l80e (from a truck) to it. The tranny has a kit installed that makes it fully manual because it can't be controlled by the stock PCM anymore.
The PCM ramped up (the duty cycle I think) so as to not damage things (cushions).
Like this:
**broken link removed**
Here are some specs of what the stock PCM does to operate it (hope it's readable):
**broken link removed**
This is from the service manual here: go to page 49....https://www.scribd.com/doc/34146059/4L80E
When I flick the switch, I just want it to ramp up like the first image, but with the right frequency (292.5hz) and duty cycle. I think![Eek! :eek: :eek:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Some people just hook a switch up to it with 12volts and it eventually destroys the solenoid. It's quite a big job to replace the solenoid, I don't want that to happen.
Can anyone send me in the right direction in how to do this? I almost need it spelled out for me, I apologize. What do I need to buy to do this.
Thank you sooo much!
Jeff
![Big Grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
I need your help to build a PWM controller with a few specific characteristics. What I want it to do is power the lock up solenoid in my 4l80e transmission. It locks the torque converter in overdrive/3rd thus dropping the rpm for better mileage. I want it on a switch that I would operate while driving, but will deactivate when I hit the brakes, to turn it on again it would have to be reset (switched off then on again).
I have done an engine swap, put a TPI 305 (from a Camaro) into my Toyota 4X4 and hooked the 4l80e (from a truck) to it. The tranny has a kit installed that makes it fully manual because it can't be controlled by the stock PCM anymore.
The PCM ramped up (the duty cycle I think) so as to not damage things (cushions).
Like this:
**broken link removed**
Here are some specs of what the stock PCM does to operate it (hope it's readable):
**broken link removed**
This is from the service manual here: go to page 49....https://www.scribd.com/doc/34146059/4L80E
When I flick the switch, I just want it to ramp up like the first image, but with the right frequency (292.5hz) and duty cycle. I think
Some people just hook a switch up to it with 12volts and it eventually destroys the solenoid. It's quite a big job to replace the solenoid, I don't want that to happen.
Can anyone send me in the right direction in how to do this? I almost need it spelled out for me, I apologize. What do I need to buy to do this.
Thank you sooo much!
Jeff
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