HELP Won't shift to 2nd unless off the gas
However, since a tune does not change by itself and from the age of the car, I suspect your band is starting to slip.
You can check this by pressing in on the servo cover with e.g. a crow bar and estimating how much it moved. 1/16-1/8" is good, 3/16" is marginal and 1/4" is where the band starts to slip.
Also check the fluid level which is best done with the engine running. (I find that with the engine off for a while, a fluid level 1" above the "Full" line is a good approximation of being full.)










