OffRoadOhio
Registered Member
I know 700r4 questions have been asked and answered all over the internet. I have been reading thread after thread on many differant sites trying to solve my problem and havent came across a similar issue yet.
Back story. This is my g/f's truck. Shes had it around 7 years. It is your typical old chevy that is pieced togather using many differant trucks, becuase all of the local hilljacks think they know how to fix them. has a 350 thats been in prob 6 differant trucks and is carburated. This truck was a TB truck origianly and was a standard. It now has a 700r4 that is of the older variety as it has no electronics except the lock up TQ. two years ago she took it to a mudbog and the transfercase and adapter literally fell off the transmission and it puked the fluid.
Truck sat until last June when I came into her life and decided to try to fix it for her. Onc ei got the tcase mounted back up and filled the trans with fluid it wouldnt shift from first and it also had a major oil leak in the engine.
We let it sit again until I found time and the money to tear into it. Found the shifting issue was a stuck throttle valve. I took it and govenor out and and cleaned them up and removed the gunk build up and reassembled.
Truck then shifted a little odd so I adjusted the cable some and it started shifting decent but 4th gear didnt seem right.. Then suddenly really late hard shifts like the TV cable was out of adjustment. I tried all sort of adjustments and no matter what it never changed.
I hooked it up to a flush machine and did a full flush on it just to see what would happen. Drove it around with no change.
Put it on jack stands and got under the hood and manually controlled the TV cable while running the throttle by hand aswell. it shifted late and about threw itself off the stands for the first few shifts. Then i seemed to find a sweet spot in and the shifting got smoother, although it was still really late.
I also was trying to diagnose a no reverse light issue at the same time and thats when I noticed that there were NO wires hooked to this 700r4. I dug around in the harness and found the 3 wire plug that plugs into the trans with a badly messed up end on it. Went to the parts store and found a matching end and replaced it and plugged in. Test drive. No change in transmission, on the ground still very hard and very late shifts.
I got mad for the day and parked it. G/f asked if it was good to drive to work the next day 9 about 2 miles) i said yeah just be easy. She got in it and I heard it shift nice and smooth as she drove away. She called once at work and said it worked better than it ever has. She put about 200 miles on it in 3 days with it shifting flawlessly. Then called me last night saying it sback to the hard and late shifts.
What would cuase it to be shifting hard and late one day, then perfect the next, then back to crappy again?
Back story. This is my g/f's truck. Shes had it around 7 years. It is your typical old chevy that is pieced togather using many differant trucks, becuase all of the local hilljacks think they know how to fix them. has a 350 thats been in prob 6 differant trucks and is carburated. This truck was a TB truck origianly and was a standard. It now has a 700r4 that is of the older variety as it has no electronics except the lock up TQ. two years ago she took it to a mudbog and the transfercase and adapter literally fell off the transmission and it puked the fluid.
Truck sat until last June when I came into her life and decided to try to fix it for her. Onc ei got the tcase mounted back up and filled the trans with fluid it wouldnt shift from first and it also had a major oil leak in the engine.
We let it sit again until I found time and the money to tear into it. Found the shifting issue was a stuck throttle valve. I took it and govenor out and and cleaned them up and removed the gunk build up and reassembled.
Truck then shifted a little odd so I adjusted the cable some and it started shifting decent but 4th gear didnt seem right.. Then suddenly really late hard shifts like the TV cable was out of adjustment. I tried all sort of adjustments and no matter what it never changed.
I hooked it up to a flush machine and did a full flush on it just to see what would happen. Drove it around with no change.
Put it on jack stands and got under the hood and manually controlled the TV cable while running the throttle by hand aswell. it shifted late and about threw itself off the stands for the first few shifts. Then i seemed to find a sweet spot in and the shifting got smoother, although it was still really late.
I also was trying to diagnose a no reverse light issue at the same time and thats when I noticed that there were NO wires hooked to this 700r4. I dug around in the harness and found the 3 wire plug that plugs into the trans with a badly messed up end on it. Went to the parts store and found a matching end and replaced it and plugged in. Test drive. No change in transmission, on the ground still very hard and very late shifts.
I got mad for the day and parked it. G/f asked if it was good to drive to work the next day 9 about 2 miles) i said yeah just be easy. She got in it and I heard it shift nice and smooth as she drove away. She called once at work and said it worked better than it ever has. She put about 200 miles on it in 3 days with it shifting flawlessly. Then called me last night saying it sback to the hard and late shifts.
What would cuase it to be shifting hard and late one day, then perfect the next, then back to crappy again?
