I have a 95 gsr. the idle when cold jumps right to 2800 and drops slowly to about 2200 then drops to 900. Then surges back to 2500 so on so forth. I changed the idle control speed valve and that did not fix. I tested the ecu and it came back good. I have no vacuum leaks and all electrical is sending proper signal. It is not throwing any codes out???? any ideas???