13aceofspades13
Full Member
- Joined
- Aug 18, 2012
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- 273
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- Location
- Ionia Michigan
- Buick Ownership
- 1998 Buck Regal LS 25th anniversary
i have not too recently posted a thread about the issue i am having, it is outdated, and i cannot edit it, so i will make a better more up to date one.
the transmission is still having the same issue, i will describe what i am experiencing as detailed as possible.
what happens usually happens when the transmission is warmed up, after cruising at a steady speed for extended periouds after a complete stop or slowing down too a crawl, usually the transmission will shift into what feels like first with a clunk, i will accelerate and the car will go without a fuss in first gear, no slippage! then when it is supposed to shift into second, it does not, RPMs climb, and it stays in first until the engine reaches about 3000 too 3500RPM, then... the engine revvs freely like its dropped into neutral, revving as high as 4,000 4,500RPM, then you can feel the transmission smoothly shift into second gear without slippage... and it will continue to go through all the gears smooth as glass without slippage, and usually will not happen for the rest of my trip. i can come to complete stops and crawls, and accelerate with no hard or slipping shifts. No codes are thrown pretaining to the transmission, no MIL light is lit, i had a person that looks at transmissions plug a transmission monitoring tool in, and it has no issues that he sees. the Torque converter clutch operates as it should at all temps and speeds.
i have done a transmission fluid and filter change but not a flush, i have replaced the throttle position sensor, the Map sensor, have inspected wiring, and inspected the vehicle speed sensor and it was good, none of these things have fixed the issue... i have reserched and looked around, and not yet found a answer that makes sense...
a slipping tranny, or a bad set of valves or solonoids should set a code at least in the history, and hard shifting afterwords should result, as a 4T65E will go into long shift adapt mode... what is the problem i am experiencing?
the transmission is still having the same issue, i will describe what i am experiencing as detailed as possible.
what happens usually happens when the transmission is warmed up, after cruising at a steady speed for extended periouds after a complete stop or slowing down too a crawl, usually the transmission will shift into what feels like first with a clunk, i will accelerate and the car will go without a fuss in first gear, no slippage! then when it is supposed to shift into second, it does not, RPMs climb, and it stays in first until the engine reaches about 3000 too 3500RPM, then... the engine revvs freely like its dropped into neutral, revving as high as 4,000 4,500RPM, then you can feel the transmission smoothly shift into second gear without slippage... and it will continue to go through all the gears smooth as glass without slippage, and usually will not happen for the rest of my trip. i can come to complete stops and crawls, and accelerate with no hard or slipping shifts. No codes are thrown pretaining to the transmission, no MIL light is lit, i had a person that looks at transmissions plug a transmission monitoring tool in, and it has no issues that he sees. the Torque converter clutch operates as it should at all temps and speeds.
i have done a transmission fluid and filter change but not a flush, i have replaced the throttle position sensor, the Map sensor, have inspected wiring, and inspected the vehicle speed sensor and it was good, none of these things have fixed the issue... i have reserched and looked around, and not yet found a answer that makes sense...
a slipping tranny, or a bad set of valves or solonoids should set a code at least in the history, and hard shifting afterwords should result, as a 4T65E will go into long shift adapt mode... what is the problem i am experiencing?