Power Loss on Acceleration and check engine light!

Have a 96' Interpid when acceletating the car has a loss of power almost like its not firing all plugs. But when it gets up to a certain speed or rpm the power returns until you shift into another geat then the same all thru the gears.The check engin light is also on can anyone help.
Thanks

turn your ignition key on/off three times ending in the off position. Read the number of times the check engine light flashes and that will tell what the code is. Example, if the light flashes twice, then pauses then flashes another four times, that's a code 24.

got these codes 12, 17 , 43 , 24 twice and 55.

wow, you've got a lot of codes. Here's what they mean:
12- battery has been disconnected within the past 50 drive cylces.
17- Engine cold too long; not reaching closed loop.
43- Misfire in a particular cylinder.
24- Throttle Position Sensor voltage does not correlate to MAP sensor voltage.
55- End of code message.

The main three you should be concerned about is the code 17, 24, and 43. With this many codes and different circuits, it could be a powertrain control module failure. First check the Throttle Position Sensor; it's mounted by the throttle and has 3 wires going to it. Back probe the orange/blue wire and move the throttle back and forth; you should see a varying voltage.

Also, you can backprobe the violet/white and black/light blue wires to see if you have a 5 volt refrence coming from the PCM.

just an added thought, when you make your check of the throttle position sensor, make sure you have the key on, engine off.