Guys, I had a BRF rebuilt by a reputable Buick transmission guy about two years ago and installed in my 87 T. When driving home from his shop about 300 miles the transmission started acting up and would not go into 4th gear. I called him after making it home and he told me to take it to a local transmission shop he recommended (he actually paid the bill). Very stand up of the transmission builder. The local shop found the throttle valve to be stuck. Basically the local shop unstuck the throttle valve, adjusted the tv cable, and replaced the pan / fluid.
The transmission worked fine for awhile - just driving it and a few trips to the drag strip in 2008. Last summer I took my car to the drag strip 5 times. On the last 3 times at the track my transmission would act up and not shift correctly. This is what seems to consistantly happen: the first and second drag strip pass the transmission would work correctly and shift good, on usually the third or fourth pass on the 2nd to 3rd gear shift it will hang-up / delay and then shift to third (It will shift without letting off the gas). It seems as if the transmission is flaring on the 2 to 3 shift. If I get another quarter mile pass the transmission shifts good again. I seems to only do this one time on the third or fourth pass at the drag strip. I have had it do the hang-up / delayed shift only once at the drag strip on the 1st to 2nd gear shift (the 2nd to 3rd shift worked fine on that pass).
Now, on the street when it's WOT the hang-up / delayed shifts happens almost 50% of the time. I'll be driving 15 mph, WOT, the trans downshifts to 1st gear, car takes off, then about 50% of the time the trans will hang-up / delay shift into 2nd. When it shifts to 2nd it will hit pretty hard.
The strange thing is when just normal driving around the transmission shifts perfect in all four gears (up shifts and down shifts).
Could there be something sticking in the valve body or a piece of dirt? Any suggestions on what could be causing these problems?
Thanks for any suggestions, Craig
The transmission worked fine for awhile - just driving it and a few trips to the drag strip in 2008. Last summer I took my car to the drag strip 5 times. On the last 3 times at the track my transmission would act up and not shift correctly. This is what seems to consistantly happen: the first and second drag strip pass the transmission would work correctly and shift good, on usually the third or fourth pass on the 2nd to 3rd gear shift it will hang-up / delay and then shift to third (It will shift without letting off the gas). It seems as if the transmission is flaring on the 2 to 3 shift. If I get another quarter mile pass the transmission shifts good again. I seems to only do this one time on the third or fourth pass at the drag strip. I have had it do the hang-up / delayed shift only once at the drag strip on the 1st to 2nd gear shift (the 2nd to 3rd shift worked fine on that pass).
Now, on the street when it's WOT the hang-up / delayed shifts happens almost 50% of the time. I'll be driving 15 mph, WOT, the trans downshifts to 1st gear, car takes off, then about 50% of the time the trans will hang-up / delay shift into 2nd. When it shifts to 2nd it will hit pretty hard.
The strange thing is when just normal driving around the transmission shifts perfect in all four gears (up shifts and down shifts).
Could there be something sticking in the valve body or a piece of dirt? Any suggestions on what could be causing these problems?
Thanks for any suggestions, Craig
