my 92 firebird v6 started hesitating at first and then had a speratic idle now it stalls and revs high enough to move the car at a stop sign. i did an idle learn and a mechanic tried a map sensor and an iac the timing is off 10 degrees also. help i have too much invested in my baby and if i do need a new ecm where can i get one cheap.

 

I got a ecm off ebay used, worked good