4R100 TC Lock?
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From: Knoxville, TN
4R100 TC Lock?
Is the converter supposed to lock immediately when it shifts to overdrive? Mine locks immediately and will unlock when I tap the brake while still on the throttle. Just wondering. Everything related is stock.
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From: Knoxville, TN
. There are a few differences there.
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I tried TWICE just to make sure I was right, but you CAN NOT put 2 tons of mulch in a Volvo S40! You can pack it under the seats and get a little extra, but a scoop was all I could get in it.
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From: Reed Point, MT
The PCM strategy has EVERYTHING to do with how and when the torque converter clutch is applied.
Starting in the '01 model year, most strategies allowed the torque converter clutch to remain applied during brake application. Most all 99 and 00 trucks use strategies that cause the TCC to release upon application of the brake. In addition, most of the E99-early 2000 strategies would not cause the TCC to be applied in 3rd gear on acceleration and would shift to 4th and apply the TCC at the same time....at about 45 MPH...so you'd go from a screaming-high RPM to bogging down within a half of a second. Thankfully, Ford figured out that applying the TCC in 3rd at about 32-38 MPH really helped in that department when they implemented those strategies in later 2000.
Starting in the '01 model year, most strategies allowed the torque converter clutch to remain applied during brake application. Most all 99 and 00 trucks use strategies that cause the TCC to release upon application of the brake. In addition, most of the E99-early 2000 strategies would not cause the TCC to be applied in 3rd gear on acceleration and would shift to 4th and apply the TCC at the same time....at about 45 MPH...so you'd go from a screaming-high RPM to bogging down within a half of a second. Thankfully, Ford figured out that applying the TCC in 3rd at about 32-38 MPH really helped in that department when they implemented those strategies in later 2000.
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Thanks Cleatus. That is EXACTLY what my truck does. Revs high and then bogs into OD. Is there any way to have the stealership flash the module to remedy that or is a tuner the only way?
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From: Virginia - SW (Riner)
Other than chipping an 00 can you get the PCM reflashed to get the newer TCC strategy? This may explain why some 99-00 owners seem to have more trans issues - TCC lockup & a shift at the same time can't be all that great for the trans & driveline
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From: Reed Point, MT
Also, if you get a chip from any number of vendors, it will come with PMT1 programming (or PMT1-esque if you have a 50-state emissions truck or oddball PCM) so you don't have to worry about a dealer reflash.
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Yeah, my PMT2 would stay locked when I braked.
However, a few years ago, I got a Diablo Predator programmer and all 4 tunes in it would cause the TC to unlock when I braked. Talked to Diablo about it and they said, "Its supposed too".
Figured if thats all they knew about my PMT2 programming, Adios Amigo.
However, a few years ago, I got a Diablo Predator programmer and all 4 tunes in it would cause the TC to unlock when I braked. Talked to Diablo about it and they said, "Its supposed too".
Figured if thats all they knew about my PMT2 programming, Adios Amigo.