Jack p

Thank you so much do you think this could be contributing to my shifting issue.

Jeep won’t shift when it’s cold. Jeep will shift perfect after the first shift of the day for the rest of the day. Until it cools back down and won’t shift in the morning. Repeat. Sometimes (rarely) it will slip out of gear if it just started shifting automatically. That is when I unsafely reach over and pull the fuse from the TCU and shift manually. It shifts perfectly manually from 1st,3rd OD when it’s cold as well never slips or anything. Shifts perfectly manually. Sometimes I’ll jump in the jeep in the morning when it’s cold and to my surprise it will shift perfectly automatically no warm up cold fluid. Then randomly slip back into first and I have to pull the fuse. When it was warm I drove the jeep from Detroit to Columbus and it shifted perfectly automatically the entire way. Parked the car at my parents house. Got in it in the morning and didn’t shift. Had to pull the fuse. Idek I have: bought another TCU, replaced all 3 solenoids, checked for voltage at fuse, drain and fill trans fluid with dex merc, switched to the Big 7 cables, cleaned grounds throughly, changed trans filter, sprayed contact cleaner on both connectors by dipstick, sprayed both TCU adapters, cried, drain and filled again because my trans pan drain bolt was stripped and leaking, looked for my speed sensor and think I found it(attachment)\/\/. Did the whole TPS alignment per cruiser54 I am so beyond confused. The guy who owned it before me took it to a trusted shop and they rebuilt the transmission. They found the low clutch pack blown out. They installed improvement and shift kit and resealed front to back. They also fixed wiring inside transmission pan, reset tension on slide connections. The write us says it worked perfectly and they test drove it for a final 5th time and all worked well. one thing that keeps flicking my brain is when I changed the solenoids, the middle solenoid had trouble getting the bolt to fit properly it seemed. I’m sure I got it in tight but it was weird compared to the other two solenoids fit perfectly. As well as another attachment I will show below. Connected to the TCU and fuse are the blue and yellow wire. They’re directly connected by a little resistor that was snapped off. Anyone know how to either reconnect without blowing the fuse with another resistor. Thank you for reading this. Please help.

Also wanted to mention I went digging into the old duct tape to see if I had any corrosion and the little metal resistor piece was snapped off. It seems like an unsafe hazard so I snipped the wires. Does anyone know what these two wires are for and why they are connected like this? Could this be adding to my issue?

This seems like I am having a similar issue but slightly different. I have a 89 Renix Automatic with the AW4. My shifting problem consists of having to drive the jeep manually for a random amount of time until it is warm. After the first shift of the day it runs incredibly smooth. With the exception of randomly slipping out of gear. I’m constantly putting in and taking out my 10 fuse depending on whether or not the jeep wants to shift. Note the jeep shifts perfect with no hesitation manually. Which leads me to believe I have an electrical issue. But it also will shift after I have been driving for awhile and put the fuse back in. things I have done: replaced all 3 solenoids and changed fluid and filter(dex merc), cleaned and replaced all ground with the jeep cables kit, purchased a new(used) TCM. Cleaned inspected and sprayed all my electrical connectors, checked for voltage at the fuse which is good 12 volts. I'm beginning to think it could actually be a transmission problem. Even though it shifts perfectly fine manually. Or maybe something is messed up with the solenoid for 2nd gear? With the fuse in on a warm morning, first start of the day it will just high rev and never get out of first gear. Please someone steer me in another direction.