[svxfiles]

Have the shop check out your Throttle Position Sensor (T.P.S.) voltage.
If it's higher than the recomended 0.50Volts, that can cause binding.

Do your tires match? Are all four the same size, brand, type?

For example, if you have four Goodyear Eagle 225/50/16s, but the fronts are TR's, and the back are GT2's, they might not have the same circumferance, causing a binding.

Even if they are all the same brand, do they all have the same circumferance?
(Aprox 79 inches on the stock size.)

Does the power light blink 16 times in a row when you start it?