93 grand prix Engine surges when accelarating and Idles high then drops to normal.

[stra8uphoosier]

1. Starting Car: engine idles at 2000 RPM.
2. Drops when put in gear and then sometihng clicks and goes back to normal idling speed.
3. Engine has a sputting surge only during acceleration and returns normal...
Car is used daily and 650 miles a week.
Repairs Done:
Coils replaced.
Spark Plugs Replaced.
Plug Wires Replaced.
Fuel Filter Replaced.
Fuel Pump Replaced 4 years ago(Need to check pressure).

STILL SURGES STILL SURGES STILL SURGES STILL SURGES

Repairs this week:
Oxygen sensor.
EGR valve.
Injecter Cleaning (Going to check AutoZone for the Injecter Cleaing kit than connects to the fuel line)

Idle Speed Control Error
Dealer said it could be a E.C.M Problem (Loosing memory).
They Tighten the battery and grounds straps...... Didn't surge untill 3 days later. Still surges but they wanted more money$$$$$$$.

Well after the new repairs don't make it better. E.C.M will have to be purchased....

Then another Scan will have to be done to check for anymore problems..... Thats $70 :~(