Hi all, my 03 SO has a 47re that was built by a local transmission guy and he did a great job but i just want a second opinon on a annoying issue that he says is normal. When i leave a light on 1/4-3/4 throttle it somtimes shifts from 1st to 2nd (holds 2nd for 1sec) and right to 3rd, its like it does a long shift somtimes and just goes straight to 3rd. The warmer the trans gets the more it does it and my trans guy said its normal and has to do with the tps sensor. This issue is driving me nuts and i want it to be fixed right. Any ideas?

 

im kind of a noob but my guess is the front band needs adjusting, I had a weird shift issue with 2nd gear and that was it.

 

Really so you had the same issue and that fixed it?

 

Does anyone know what this could be ??
I am having the same issues

 

yes I had the same issue. Its a combination of the band adjustment and computer's shift points. Put your smarty to stock torque management after adjusting the bands and you should notice that the problem will go away. whats happening is that the smarty with modified torque management is providing more power per rpm and the transmissions computer hasnt made the adjustment to the shift points. Well at least thats my theory.

p.s. at what mph does the weird shift happen?

 

I would also check the the throttle valve cable is adjusted correctly.
ADJUSTMENTS - THROTTLE VALVE CABLE
A correctly adjusted throttle valve cable (1) will cause the throttle lever on the transmission to move simultaneously with the throttle body lever (3) from the idle position. Proper adjustment will allow simultaneous movement without causing the transmission throttle lever to either move ahead of, or lag behind the lever on the throttle body.

ADJUSTMENT VERIFICATION
Turn ignition key to OFF position.
Remove air cleaner.
Verify that lever on throttle body is at curb idle position. Then verify that the transmission throttle lever is also at idle (fully forward) position.
Slide cable off attachment stud on throttle body lever.
Compare position (B) of cable end to attachment stud on throttle body lever:
Cable end and attachment stud should be aligned (or centered on one another) to within 1 mm (0.039 in.) in either direction (B)(Throttle Valve Cable at Throttle Linkage).
If cable end and attachment stud are misaligned (off center), cable will have to be adjusted as described in Throttle Valve Cable Adjustment procedure.
Reconnect cable end to attachment stud. Then with aid of a helper, observe movement of transmission throttle lever and lever on throttle body.
If both levers move simultaneously from idle to half-throttle and back to idle position, adjustment is correct.
If transmission throttle lever moves ahead of, or lags behind throttle body lever, cable adjustment will be necessary. Or, if throttle body lever prevents transmission lever from returning to closed position, cable adjustment will be necessary.
ADJUSTMENT PROCEDURE
Turn ignition switch to OFF position.
Remove air cleaner if necessary.
Disconnect cable end (3)(Throttle Valve Cable at Throttle Linkage) from attachment stud on throttle lever (1). Carefully slide cable off stud. Do not pry or pull cable off.
Verify that transmission throttle lever is in fully closed position. Then be sure lever on throttle body is at curb idle position.
Pry the T.V. cable lock (A) into the UP position. This will unlock the cable and allow for readjustment.
Apply just enough tension on the T.V. cable (B) to remove any slack in the cable.Pulling too tight will cause the T.V. lever on the transmission to move out of its idle position, which will result in an incorrect T.V. cable adjustment. Slide the sheath of the T.V. cable (D) back and forth until the centerlines of the T.V. cable end (B) and the throttle bell crank lever (C) are aligned within one millimeter (1mm).
While holding the T.V. cable in the set position push the T.V. cable lock (A) into the down position. This will lock the present T.V. cable adjustment.
NOTE: Be sure that as the cable is pulled forward and centered on the throttle lever stud, the cable housing moves smoothly with the cable. Due to the angle at which the cable housing enters the spring housing, the cable housing may bind slightly and create an incorrect adjustment.

Reconnect the T.V. cable (B) to the throttle bellcrank lever (C).
Check cable adjustment. Verify transmission throttle lever and lever on throttle body move simultaneously.