I HAVE A 1987 CAMARO Z28 AND THE ENGINE LIGHT COMES ON AND OFF...WHEN THE ENGINE LIGHT IS ON THE IDLE GETS LOW WHEN THE ENGINE LIGHT IS OFF THE IDLE GETS HIGHER..THE ENGINE LIGHT USUALLY COMES OFF WEN I START IT COLD THEN SLOWLY COMES ON AFTER WARMS UP A LITTLE...I HAVE REPLACED A IDLE CONTROL VALVE,TPS,OXYGEN SENSOR THEY RELOCATED THE AREA OF IT ALSO I GOT NEW SPARK PLUGS AND FUEL PUMP IM GUESSIN IT'S MY FLOAT CAUSE IT'S KINDA OFF...I TRIED PULLING CODES BUT NO CONNECTION SMH PLZZZZ HELP!!!

 

it's a tpi 5.7 liter to by the way and I also replaced the mass airflow sensor